These calculators are offered free
of charge  some by vendors and others by individuals. Some are standalone and others function online via Java from the web page. The majority
are engineering calculators, but some are scientific calculators, some are amateur radio calculators, and some are electrician type calculators.
See also the RF Cafe Online Calculators!!
A good way to find on this page what you need is do a browser page search.
AccelWare accelware.com Unit Conversion Tool  powerful, intuitive, and easytouse utility for quick and accurate
conversion between almost every possible unit of measure, from one system to another. The latest version includes more than 2200 units in 78
categories. The categories include: length, area, speed, mass, numbers, volume, time, density, force, pressure, energy, power, flow, temperature,
angle, light, fractions, data transfer, and many more. Fully functional Online version now available.
AlphiMAX P2P Signal Propagation Calculator alphimax.com/ptp/overview A very nice graphical interface tools that enables
you to compare manufacturers, while taking into account the terrain of your area, terrain type, climate, antenna type, define fade margin and
more. Use of a GPS database produces a very accurate elevation profile between antenna locations.
Antenna Design Calculator qpar.com/capabilities/software/microwaveantennacalcinstructions The upper section relates
antenna diameter and frequency to gain and beamwidth. Using the scroller, set the beamwidth against the 3 dB or 10 dB marker, and read off the
corresponding frequency and diameter; or set the frequency against the diameter and read off the beamwidth. By Qpar Angus.
Antenna Power Tools awapps.commscope.com/downloads Andrew's complete collection of antenna planning software.
Antenna System Evaluator n6ach.com/calc/antenna.html Evaluate consequences of SWR & feedline losses, KD6DKS.
Antenna System Planner awapps.commscope.com/downloads/amsp/ By Andrew Corporation.
ATC QuickCalc atceramics.com/designsupport Capacitor Calculation, American Technical Ceramics.
Attenuator Calculators rfcafe.com/references/spreadsheets/attencalcss.htm "T" and Pi topologies using online interactive
Excel OWA technology. Here is a JavaScript version.
Attenuator Calculator microwaves101.com/encyclopedia/calcattenuator.cfm Four topologies: "T", Pi, BridgedT, Reflection.
Attenuator Calculator http://www.phasematrix.net/phasematrix/rfdesigntools/teeapiattenuatorcalculator Very nicely
done online interactive calculator  by Microwaves & RF, Paul Khanna of Phase Matrix
Attenuator Calculator db0smg.afug.unigoettingen.de/~dk1rm/tools/att.html DK1RM Here is a JavaScript version for
Pi and T attenuators  auf Deutsch. Here it is
in English babelfish.yahoo.com/translate_url?doit=done&tt=url&intl=1&fr=bfhome&trurl=http://db0smg.afug.unigoettingen.de/~dk1rm/tools/index.html&lp=de_en&btnTrUrl=Translate
Other calculators available by clicking on the Tools db0smg.afug.unigoettingen.de/~dk1rm/tools/index.html link.
Attenuators sandiego.edu/~ekim/e194rfs01/minl_atten/minlosatten.html Minimum loss attenuator design.
AVX SPIMIC avxcorp.com/SpiApps Capacitor calculation.
Besser Associates besserassociates.com 4159493300 / Los Altos, CA
Reflectometer bessernet.com/Ereflecto/tutorialFrameset.htm Butterworth Filter Designer bessernet.com/Ebutterworth/tutorialFrameset.htm
dBmtodbW bessernet.com/jobAids/dBmCalc/dBmCalc.html and Smith Chart applets bessernet.com/jobAids/jSmith/jSmith.html
Broadcast Engineer's Calculators bobgroome.com by SOB (Sweet Old Bob) HD cost estimates; Antenna, coax & other
losses, Dual input HD Antenna TPO's; Convert units of Measure, High level combining; Look up ballpark coax loss & power ratings; Dehydrator
size for up to 4 coax runs; Beam tilt and/or null fill Needed; STL path calculator for 950 paths; FM antennas; Gain of parabolic antenna; Channel
vs. frequency; FM/TV; Plot Fresnel path; AM tower height & rigid coax; Power calculations; BTUs; Conduit size for your wire bundle; Does
FM pattern meet FCC limits; Ohm's Law; Wire and circuit size for deicers; FCC Official RFR Model Program Link
Broadcast Engineering Related Calculators allenk.home.infionline.net/engpgms.html Allen's Broadcast Engineering Extravaganza
Lots of good JavaScript calculators: AM Common Point / Antenna Current Calculator, FM Transmitter Power Output Calculator, RPU/STL Transmitter
Frequency Tolerance Calculator, AM Transmitter Harmonics Calculator, Free Space Loss Between Isotropic Radiators Calculator, 0.6 First Fresnel
Radius Zone Calculator, VSWR Calculator, Coaxial Cable Loss Calculator, Coax Cable Loss/Antenna Gain Calculator, Opamp Gain Calculator
Cable Performance Calculators timesmicrowave.com/cable_calculators Calculate loss & power, VSWR & return loss,
by Times Microwave.
Calc101 calc101.com By webMathematica, scores of online interactive calculators for algebra, trigonometry, calculus,
matricies, linear equations.
Calculator Edge calculatoredge.com This has to be one of the Web's largest collection of unique (as opposed to copied)
online calculators. Each of these topics has many calculators within them. General, Civil Engineering, Optical Engineering, Mechanical Engineering,
Plastics Engineering, Metallurgy, Electronics Engineering, Electrical Engineering, Chemical Engineering, Physics, Ceramics, Oil & Gas, Structural
Engineering.
CapCAD dilabs.com/applications/capcad.aspx Capacitor calculation, by Dielectric Laboratories.
Chemandy Electronics chemandy.com/calculators/calculator_index.htm +62 31 8914627 / Jawa Timur, Indonesia Large
selection of online interactive calculators for RF design, including attenuators, capacitance, resonance, RF traps, and microstrip impedance.
Design, development and small scale manufacture of simple RF and Audio items. We also have the capability for ATE programming in Labview, HP/Agilent
Vee or Visual Basic, and can produce associated test jigs.
Chemistry Calculators 1728.org/indexche.htm Boyle's Law, Charles' Law, STP, molar volume, etc, by 1728 Software Systems.
Choke Designer powerdesigners.com/InfoWeb/calculators/ChokeCalc/dc_choke.shtm Inductor values using standard cores.
Chris Gillings' Cardboard Slide Rule Collection chris.gillings.com/collect/slide If you are at all nostalgic and also
are a nerd, then you will drool over this collection by Chris Gillings. Andrew Antenna and Propagation Computer, Andrew Parabolic Antenna System
Computer (1957), Andrew Parabolic Antenna System Computer (1964), Andrew Transmission Line Computer, BioMate, Blackwell Calculator, Althouse
Chemical Co., Marconi Signal Source Calculator, Motorcraft Gasculator, National Standard Company Strip Calculator, Proportion Wheel, Radiac,
No.1, Raytheon Radar Performance Calculator, Readymix Concrete Calculator, and many more. They're all here!
CoilSim nathaniyer.com/images/coilsim.jpg Basic ciol inductor calculator applet, by Nathan Iyer
Coordinate System Converter randomsciencetools.com/maths/coordinateconverter.htm Convert between rectangular, polar,
spherical, and cylindrical coordinates.
Connect802 Antenna System Designer connect802.com/antenna_c_main.php An online calculator that creates a wireless
network antenna system design report based on various parameters that you provide. It will help you predict endtoend performance and evaluate
your network design when you plan a pointtopoint, or pointtomultipoint outdoor wireless network deployment. You'll be able to analyze the
radio link and tune network parameters for optimal link suitability.
ConvertIt convertit.com Huge collection of converters and calculators.
Cubicle Quad Antenna Calculator softcom.net/users/kd6dks/quad.html Determine dimensional quantities  javascript.
Daycounter, Inc. Engineering Services daycounter.com/Calculators Calculators for switching power supply, air core
inductors, SallenKey LP Butterworth filter, L matching network, standard resistor value, PI & T pad attenuator, reactance, series  parallel
impedance conversion, ZSY parameter conversion, Rollet Stability (K) Factor, complete RF amplifier design & analysis, LC resonance.
Dielectric Constant of Water (Complex) randomsciencetools.com/electronics/water_dielectric.htm Calculates the real
and imaginary parts of the dielectric constant for water, sung temperature, salinity, and frequency. By Gareth Harris
DigSim embedded.eecs.berkeley.edu/research/weld/yoyodyne_demo_docs/DigSim/DigSim.html Digital schematic editor &
simulator from Berkeley.
Dirac Delta diracdelta.co.uk/science/source/c/a/calculations/source.html "Science and engineering encyclopedia." Hundreds
of JavaScript calculators, definitions, historical information, etc.
eCalc ecalc.com Advanced features including support for complex numbers, unit conversion, base conversion, and has
a built in equation solver. eCalc is one of the best calculators on the web and runs completely in your browser without requiring any special
plugins. Electrical engineers will find eCalc's complex math especially useful since it supports both rectangular and polar formats. eCalc supports
both RPN and Algebraic Input Modes.
engApplets engapplets.vt.edu Java applets for engineering education.
Engineering Calculators on Educypedia educypedia.be/electronics/electroniccalculatorrf.htm A pretty good collection
of links to online calculators  satellites, attenuators, Smith Chart, VSWR, free space loss, etc.
EIA Equipment Rack Stencils for Visio
By Kirt Blattenberger.
EIA Tube Bases for Visio
Electromagnetic Field Applets Very nice graphical output and user interface, with animation.  Wave propagation
amanogawa.com/archive/PlaneWave/PlaneWave2.html  Field Polarization amanogawa.com/archive/Polarization/Polarization2.html
 Oblique Incidence amanogawa.com/archive/Oblique/Oblique2.html  Oblique Incidence on Lossy Medium
amanogawa.com/archive/ObliqueLossy/ObliqueLossy2.html  Parallel Plate Waveguide amanogawa.com/archive/ParallelWaveGuide/ParallelWaveGuide2.html
 Rectangular Waveguide amanogawa.com/archive/RectWaveGuide/RectWaveGuide2.html  Dielectric Slab Waveguide
amanogawa.com/archive/DielectricWaveGuide/DielectricWaveGuide2.html
everything RF everythingrf.com/rfcalculators A nice collection of RF calculators.  Attenuator Calculator
everythingrf.com/rfcalculators/attenuatorcalculator  Microstrip Impedance Calculator everythingrf.com/rfcalculators/microstripcalculator
 Coax Impedance Calculator everythingrf.com/rfcalculators/coaxcalculator  Cascaded Noise Figure Calculator
everythingrf.com/rfcalculators/cascadednoisefiguregaincalculator  Skin Depth Calculator everythingrf.com/rfcalculators/skindepthcalculator
 Wavelength Calculator everythingrf.com/rfcalculators/wavelengthcalculator  dBm to Watt Calculator
everythingrf.com/rfcalculators/dbmtowatts  Watt to dBm Calculator everythingrf.com/rfcalculators/watttodbm
Electric Field Units Converter compeng.com.au/emc_conversion_tables_field_strength_calculator.aspx Online converter
by Compliance Engineering. Wavelength to frequency, V/m to dBuV/m V/m dBuV/m, dBm to dBuV/m (50Ω), mW/cm^2 to W/m^2 (Free Space), mW/cm^2 to
V/m (Free Space), mW/cm^2 to A/m (Free Space), mW/cm^2 to pJ/cm^2 (Free Space), W to dBm (50Ω), dBm to V (50Ω), V to dBm (50Ω)
Excalibur RPN Calculator Applet freewareguide.com/OldGoodFreeware/Excalibur.html Excalibur does not use more conventional
"algebraic" notation like many lowend calculators on the market. Instead it uses the highpowered parenthesisfree RPN notation (Reverse Polish
Notation).
Fast Fourier Transform Calculator randomsciencetools.com/maths/FFT.htm Do an FFT by entering the time domain data
in the Time Domain Data box with each sample on a new line. For complex (I and Q) data, the real and imaginary components should be on the same
line separated by a comma. Do an Inverse FFT by entering the frequency domain data in the Frequency Domain Data box with each sample on a new
line. For complex (I and Q) data, the real and imaginary components should be on the same line separated by a comma.
Field Strength Calculator giangrandi.ch/electronics/anttool/field.html Enter frequency and antenna gain, then any
one of received power, electric field strength, magnetic field strength, or power density and this calculates the others.
Field Strength Calculator compeng.com.au/emc_conversion_tables_field_strength_calculator.aspx V/m, dBuV/m, dBuA/m,
pT, dBpT, Tesla, Guass, A/m, mW/cm^2 & W/m^2. From Compliance Engineering.
Filter Coupling Matrix Calculator gwtsoft.com Facilitates synthesis of N+2 coupling matrices for Chebyshev bandpass
filtering functions, with arbitrary finiteposition transmission zeroes.
Filter Design Spreadsheets Waveguide Filter Designer rfshop.com.au/portals/22/supp/wgfil2.xls Combline
and Interdigital Filter Design Spreadsheet rfshop.com.au/portals/22/supp/c&i2.xls RF Shop rfshop.co.uk
Financial & Mortgage Calculators mortgageloan.com/calculator Over 100 personal finance calculators.
Financial Calculators 1728.org/indexfin.htm Loan amortization, interest, loan payment by 1728 Software Systems.
FM Antenna Calculator eriantennas.com/AntennaCalculator/FMCalca.htm by ERI (Electronics Research, Inc.) Plots FCC
60 dBu contours right on the page. Also many PDF files with Engineering Tables: Geotechnical Investigations for Antenna Support Structures,
Classes of FM Stations, FM Broadcast Channels, AM Tower Heights by Frequency, 54 dBu Contour Distances, 60 dBu Contour Distances, Site Plot
Plan, Wind Speed Map, Ice Probability Map, Antenna Support Structure Design Radius of Curvature Requirement.
FreeSpace Loss Calculator ezy.net/calculations/freespaceloss Other calculators for  Fresnel Clearance
Zone ezy.net/calculations/fresne  EIRP ezy.net/calculations/eirp  Distance between two points
using ezy.net/calculations/distance  Latitudes and Longitudes ezy.net/calculations/distance
Flex Analysis rogerscorp.com/cmu/flexform.htm Evaluate thermal/mechanical performance of flex circuits by Rogers
Corporation.
Frequency Finder  Open TV Channel Applet sennheiserusa.com/frequencyfinder Sennheiser searches the FCC database for
an open channel for running interferencefree wireless systems.
Fresnel Clearance Zone Calculator terabeam.com/support/calculations/fresnelzone.php By TeraBeam
Fresnel Zone Calculator wirelessconnections.net/calcs/FresnelZone.asp The calculator will generate the radius of the
first Fresnel zone only (at the obstacle point or the midpoint), the 60% (no obstacle) radius and the height of the earth curvature at the
midpoint of the Total link distance. By Wireless Connections.
HiDigit binarythings.com/hidigit Scientific calculator with extended capabilities. Advantages include a simple input
format even for the most complicated scientific formulas; i.e., enter "10pi" instead of "10*pi" or complex numbers as "1+2i".
HP48 Calculator Programs hpcalc.org/hp48/science/electricity Lots of engineering programs.
Impedance Matching Network Designer sandiego.edu/~ekim/e194rfs01/jwmatcher John Wetherell, Berkeley, CA.
Inflation Calculator westegg.com/inflation U.S., Canadian, and Italian versions. Enter begin and end dates and get
equivalent dollar values, by S. Morgan Friedman.
JPole Antenna Calculator hamuniverse.com/jpole.html Enter the operating frequency and calculate antenna dimensions
 online.
Julian Date Calculator 1728.com/calendar.htm Calculates JDs for a given month.
Karnaugh Minimizer karnaugh.shuriksoft.com A tool for developers of small digital devices and radio amateurs, also
for those who is familiar with Boolean algebra and Karnaugh Map optimization method, best suits for electrical engineering students. By Shurik
Soft.
LC Filter Designer wwwusers.cs.york.ac.uk/~fisher/lcfilter This is an interactive design package for designing analogue
(i.e. hardware) filters made of inductors and capacitors (Ls and Cs). From University of York.
Link Budget Calculator wirelessconnections.net/calcs/BudgetCalc.asp A towertotower, overtheair JavaScript calculator,
by Wireless Connections.
LOGInterMod logbook.freeserve.co.uk Leslie Green / U.K. A Windows program (Freeware) that calculates twotone intermodulation
products up to the 30th order.
Look Angle Calculator intelsat.com/resources/satellitedatapas/calclookangle.asp Use our look angle calculator to
calculate the pointing angles your dish needs in order to receive a particular satellite.
Martindale's Calculator OnLine Center martindalecenter.com/Calculators.html More than 20,000 calculators  this site
has grown incredibly over the years.
Math eBook mathebook.net This website is fully interactive and will allow kids to practice and learn math with ease.
It is designed to help students of different grades, starts from Kindergarten, Elementary, Middle School and High School Math. The goal of this
website is to provide new education tools to teachers, parents and off course students who can benefit from it. Mathebook.net has Online Tutorials
as well as Downloadable pdf tutorials.
MegaConverter2 megaconverter.com/mega2 Multifunctional units converter.
Microwave Calculator jfwindustries.com/RF_Conv_Sign_up.htm Free From JFW Industries.
Microwave Impedance Calculator (MWIJ 1.0) rogerscorp.com/acm/technology Substrate line impedance calculator by Rogers
Corporation. Written in Java  nice.
Mixer Spur Calculator hittite.com/tools/Spurcalc/SpurCalc25JarLockE.htm By Hittite Microwave.
Mortgage Calculators mortgagecalculator.org/calculators Large variety of financial calculators for mortgages, principal
calculation, cost per thousand, affordability, income requirements, FHA, refinance, HELOC, loan comparison tools, points, rent vs buy, &
more.
Mortgage Calculator mortgagecalculator.net 8 different calculators: Mortgage calculator, Affordability, Early PayOff,
Interest Only, Advanced Mortgage calculator, Mortgage Refinance, Basic Amortization, and Comparison calculator
N Calculators ncalculators.com/electronics Electronic circuit design calculators can assist you to solve, analyze
and determine the circuit design with capacitors, inductors, resistors, diodes, transistors, etc. Many other types of financial, mathematical,
and science calculators.
Online Conversion onlineconversion.com Convert just about anything to just about anything else.
PCB Trace & Via Calculator skottanselektronik.com A very complete set of online calculators for microstrip, embedded,
and differential microstrip impedance; stripline and differential stripline impedance; stripline and microstrip crosstalk; currentcarrying
capacity of traces and thermal vias; heat dissipation of thermal vias. By Sören Nilsson.
PCB Trace Width geocities.com/CapeCanaveral/Lab/9643/TraceWidth.htm Conductor thickness, ampacity, temperature rise.
PCB Trace Impedance Calculator emclab.mst.edu/pcbtlc2 Online interactive calculator for stripline and microstrip,
by U. of MissouriRolla EMC Lab.
PDA Calculator Software adacs.com/menu/PDAcalc_matrix.php ADACS has a nice collection of software for engineering,
scientific and financial applications.
PLL Phase Noise Calculator hittite.com/tools/PLLCalc/PLLCalc.htm By Hittite Microwave.
Poles & Zeros Calculator thole.org/manfred/polezero/en_idx.html Move the poles and zeros to see the frequency
domain response.
Power Calculator macgen.com/calcul.html Motor & line calculations, conversions.
Power Dissipation vs. Die Temperature Calculator analog.com/Analog_Root/static/techSupport/designTools/interactiveTools/powertemp/powertemp.html
By Analog Devices.
Power Switch Designer fairchildsemi.com/products/analog/fps_designer_software.zip By Fairchild Semiconductor.
Power Supply national.com/appinfo/power National's power supply design tool.
Power & Voltage Converter giangrandi.ch/electronics/anttool/decibel.html Convert between units of dBm, dBW, watts,
dBV, volts.
Radiated Power Calculator compeng.com.au/emc_conversion_tables_power_calculator.aspx ERP, EIRP, dBuV/m, dBm &
mW. From Compliance Engineering.
Radiated Power Converter compeng.com.au/emc_conversion_tables_power_calculator.aspx Online converter by Compliance
Engineering. EIRP (mW) to ERP (mW) to dBuV/m @ 3m to dBuV/m @ 10m.
Radio Calculators qsl.net/wa2whv/radiocalcs.shtml Pi attenuators and air inductor java calculators by Jim Hawkins.
Random Science Tools and Calculators randomsciencetools.com/index.html The intention of this site is to produce
scientific tools and calculators, and store information which will be useful to scientists, engineers, students and enthusiasts.
Chemistry randomsciencetools.com/chemistry/index.htm Electronics randomsciencetools.com/electronics/index.html
Math randomsciencetools.com/maths/index.htm Physics randomsciencetools.com/physics/index.htm
Resistor Color Code Calculator (Reversible) searchingtabs.com/rcolor/rescolor.htm This resistor color code calculator
also provides a table of nearest standard values of resistors for standard tolerances.
Resistor Ratio Calculator usna.edu/Users/ee/cameronc/Tutorials/ResistorRatio.html Finds R1/R2 combinations using standard
resistor values, by Bennet Blake.
Resistor Ratio Calculator logbook.freeserve.co.uk Leslie Green / U.K. A resistive network calculator for problems
using two or three fixed resistors. You have to use standard values, but you need some silly ratio like 3.245 V from a 10 V source. This program
helps you to pick the optimum resistor values for simple resistor dividers or opamps (inverting and noninverting). Freeware.
RF Cafe Online Calculators Many online calculators for noise
figure/temperature, filter responses, voltage dividers, waveguide cutoff frequency, VSWRreturn lossreflection coefficient conversions and
more, by Kirt Blattenberger.
RF Calc milmega.co.uk/downloads/rfcalc.exe General purpose engineering calculator by MilMega  includes table of physical
constants, component parameter calculators (capacitance, inductance, resonance, pads), multiple transmission line calculators.
RF Calculator compeng.com.au/emc_conversion_tables_rf_calculator2.aspx Wavelength, dBm, dBuV, W, dBuV/m, mW/cm^2,
pJ/cm^2, V & VSWR. From Compliance Engineering.
RF & Analog Tutorials w/Java Apps Website amanogawa.com This is a VERY nice collection of Java applets and some
PDF format tutorials. Antenna patterns, waveguide modes, electromagnetic wave fronts, interactive Smith chart, transmission lines, standing
waves, resonant circuits, radiation of wires, crosstalk, much more. By Amanogawa.
RF Calculators fcc.gov/mb/audio/bickel/findvalues.html On the Federal Communications Commission website.
RF Calculators phasematrix.com/Microwave_Components/components_webapps.html by Phase Matrix, San Jose, CA Here
is a very nice collection of interactive calculators: Tee & Pi Attenuators, Power to Voltage in a 50 ohm system, Converting dB to
Ratio, mW to dBm, dBW, dBV & Volts in a 50 ohm system, Converting Phase Noise To Jitter (Part 1), Reflectometers Conversions: Interconverting
VSWR, Return Loss, Reflection Coefficient and Mismatch Loss ,Designing Equal or Unequal Split Wilkinson Power Dividers, Cascading Three Stages
for Gain, NF & P1 dB, VSWR Mismatch Analysis and Power Uncertainty, Measuring Oscillator Output VSWR using Power Load Pulling, Microstrip
Line Design, Designing Unequal Resistive Power Dividers/Couplers.
RF Cascade Workbook 2003 RF, system,
cascade for Excel spreadsheet.
RF Cascade Workbook 2004 RF, system,
cascade for Excel spreadsheet.
RF Cascade Workbook 2005 RF,
system, cascade for Excel spreadsheet.
RF Workbench RF, system, up/downconverter,
spurious analysis, budget  best value out there.
RLC Tuned Circuit Calculator cvs1.uklinux.net/calculators Enter values for R, L, C, and/or frequency and it calculates
the others. Also calculate capacitor and inductor impedance. Ohm's Law and RC time constant calculator.
RPN Calculator
This handy Reverse Polish Notation calculator was written by the infamous Kelly
Painter. Note the logo in the upper right corner (hover your cursor over it).
RW Calc Software radiowavesinc.com/cgibin/index.cgi/Technical+Stuff/RW+ToolBox+Software+Series Free from RadioWaves,
several RF utilities, such as converters, farfield calculation, Fresnel zone clearance and free space propagation.
Sage Notebook sagenb.org Spreadsheets for many realms of science and engineering. All are free downloads
SatelliteRelated Calculators satellitecalculations.com Sun interference, powertonoise, tilt angle, antenna gain
and more than thirty other calculators.
Satellite Link Budget Calculator satsig.net/linkbugt.htm Uplink/downlink calculator, Satellite Signals site.
Signals & Noise users.ece.gatech.edu/users/gtz/java Java applet for exploring random processes.
Smith Chart for
Visio By Kirt Blattenberger.
Sunshine Design Engineering Services astrocalculator.com Ramona, CA Design specialties  hardware, CAD and software
engineering. Test Engineering Services  20 years experience RF/Microwave and Semiconductor Parametric Test. Electronic Calculator  Multiple
pages of calculators for capacitance, resistance, inductance, attenuation, microstrip, resonance, etc. Many astronomical calculators.
SWR Calculator vnahelp.com/swrcalc_screen.html VNA Help  for microwave network analyzers.
Toroid Calculator chemeng.ed.ac.uk/people/jack/radio/design_toroid.html Uses standard cores; e.g., T50.
Tower Planner awapps.commscope.com/downloads/towerplanner/default.aspx Andrew's handy calculator for height, wind
speed, terrain, etc.
Transmission Line Calculator circuitcalculator.com/wordpress/2007/03/06/transmissionlinecalculator The CircuitCalculator.com
Website Excelbased calculator
Transmission Line Calculator fermi.la.asu.edu/w9cf/tran/index.html By Kevin Schmit, W9CF
TRL / LRL Calculator TRL (Through,
Reflect, Line) and LRL (Line, Reflect, Line) reference plane calculators provided by ElectroPhotonics.
TXLine Transmission Line Calculator by Applied
Wave Research. This file seems to be no longer available on the AWR website.
Ultra Converter I 1728.org/convert.htm
Ultra Converter II 1728.org/convert2.htm If these to converters don't have it, you don't need to convert it! by 1728
Software.
Vertex 42  Engineering calculators & converter applets &
spreadsheets.
 Excel templates
vertex42.com/ExcelTemplates
 financial calculators
vertex42.com/Calculators/financialcalculators.html
 calendars
vertex42.com/calendars We also host
 The Excel Nexus
vertex42.com/ExcelLinks The ultimate directory of 3rdparty Microsoft Excel® resources, including
addins, templates, tutorials, and consulting services.
Virtual Slide Rules
 Standard slide rule
engcom.net/component/option,com_sliderule/Itemid,73 EngCom.net
 Pickett slide rule
antiquark.com/sliderule/sim/virtualsliderule.html Antiquark.com
Voltage Divider Resistor Calculator web.ics.purdue.edu/~mrushako/resistor_table.html Table of tworesistor voltage
dividers using standard 5% tolerance resistor. Opamp feedbackinput resistor pairs can also be specified. Very clever cell shading scheme for
indicating deviation from exact ratio that is specified. Provided by Mark Rushakoff.
VSWR Calculator bessernet.com/Ereflecto/tutorialFrameset.htm Animated version from BesserNet.
VSWR, Power Converter, Inductance Calculator mwelisra.com/FreeEngineeringSoftware/free_engineering_software.htm 97236175082
/ Israel Free downloadable VSWR, power converter, inductance calculator, written by Dr. Ronen Holtzman for Elisra Microwave Division engineers.
Waveguide Filter Dimension and Electrical Response Calculator guidedwavetech.com By Guided Wave Technology.
Waveguide Applets Very nice graphical output and user interface, with animation.
 Parallel Plate Waveguide
amanogawa.com/archive/ParallelWaveGuide/ParallelWaveGuide2.html
 Rectangular Waveguide
amanogawa.com/archive/RectWaveGuide/RectWaveGuide2.html
 Dielectric Slab Waveguide
amanogawa.com/archive/DielectricWaveGuide/DielectricWaveGuide2.html
Web Cool Tools webcooltools.com/engineeringdesigntool.shtml RF & microwave design applets that use numerical input
or sliders for setting parameters.
WRConnect goulouev.com/connector/index.htm Waveguide structure design tool. Corrugated LowPass Filter Design
Workshop. goulouev.com/oncorr/index.htm
Waveguide & EM Calculators amanogawa.com/waves.html This is a very nice Java/JavaScriptbased set of calculators
with a great user interface.
Wireline Calculator
WiseCalc wisecalc.com WiseCalc is the complete mathematical text engine calculator for your computer.  it's FREE!
 it has a multiline texteditor type of interface  it has 450+ unit conversions builtin  it has hundreds of functions builtin
 it can save and open calculation pages  it can evaluate builtin and user definable functions, units, constants, and matrices
WLAN Link Planning Calculators swisswireless.org/wlan_calc_en.html Many calculators for wireless link planning: Fresnel
zone, diffraction, path loss, link budget, cable loss.
Yagi Java Applet fermi.la.asu.edu/w9cf/yagipub/index.html Change frequency, element diameter, and number of segments.
