Coil Inductance
Calculate Coil Inductance instantly with the exact formula and a worked example.
Coil Inductance
Number of turns
Coil diameter (wire center)mm
Winding lengthmm
L, µH
1.6069µH
L
0.00161mH
l/d ratio
2
More about: Coil Inductance
What it calculates
The “Coil Inductance” calculator computes L, µH in µH from 3 parameters: number of turns, coil diameter (wire center) (mm), winding length (mm).
A standard physics formula used in educational and engineering tasks.
Example calculation
With parameters Number of turns = 20, Coil diameter (wire center) = 10 mm, Winding length = 20 mm the result is 1.61 µH (About 1% accuracy when winding length exceeds 0.4 × diameter).
How to use
- Enter number of turns, coil diameter (wire center) and winding length — each field above is adjustable with a slider.
- L, µH (µH) is calculated automatically as you type.
- Check the worked example below to see the formula applied to real numbers.
- Copy the result or bookmark this calculator.
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FAQ
How is Coil Inductance calculated?
The Coil Inductance calculator computes L, µH (in µH) from number of turns, coil diameter (wire center), winding length. Enter your values above and the exact formula is applied instantly; a worked example with real numbers is shown below.
Is the Coil Inductance calculator free?
Yes. It is completely free, needs no signup, runs entirely in your browser, and sends no data to any server.
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