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Inductance is the property in an electrical circuit where a change in the current flowing through that circuit induces an electromotive force (EMF) that opposes the change in current. In electrical circuits, any electric current i produces a magnetic field and hence generates a total magnetic flux Φ acting on the circuit. This magnetic flux, due to Lenz's law tends to act to oppose changes in the flux by generating a voltage (a back EMF) that counters or tends to reduce the rate of change in the current. The ratio of the magnetic flux to the current is called the selfinductance which is usually simply referred to as the inductance of the circuit.
The term "inductance" was coined by Oliver Heaviside in February 1886. It is customary to use the symbol L for inductance, possibly in honor of the physicist Heinrich Lenz. In honor of Joseph Henry, the unit of inductance has been given the name Henry (H).  Wikipedia
Standard unit = Henry (H)
abhenry  henry  microhenry  millihenry  stathenry  
1 abH =  1  10^{9 }  0.001  10^{6 }  1.113 * 10^{21 } 
1 H =  10^{9 }  1  10^{6 }  1000  1.113 * 10^{12 } 
1 µH =  1000  10^{6 }  1  0.001  1.113 * 10^{18 } 
1 mH =  10^{6 }  0.001  1000  1  1.113 * 10^{15 } 
1 statH =  8.987•10^{20}  8.987•10^{11}  8.987•10^{17}  8.987•10^{14}  1 
Note: The prefix "ab" is used to indicate an electromagnetic unit in the centimetergramsecond system.
The prefix "stat" is used to indicate an electrical unit in the electrostatic centimetergramsecond system
of units.
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 Inductors &
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 Inductance Conversions

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