Parallel Inductors Calculator

Overview

Calculates the equivalent inductance of any number of inductors connected in parallel.

Formula

L_eq = 1 / (1/L₁ + 1/L₂ + ... + 1/Lₙ)

This is analogous to the parallel resistance formula — the equivalent inductance is always less than the smallest individual inductor.

Input Parameters

Parameter	Default	Description
L₁…Lₙ	10nH	Inductance values

Inductance Parsing

Values are entered as strings using standard shorthand notation, where the prefix letter replaces the decimal point. A trailing H is optional and ignored.

Input	Parsed Value
`470`	470 H
`10nH`	10 nH
`2u2`	2.2 μH
`0u5H`	500 nH
`4m7`	4.7 mH
`22uH`	22 μH

Supported prefixes: n (10⁻⁹), u (10⁻⁶), m (10⁻³), meg (10⁶).

Output

L_{eq}: Equivalent inductance of the parallel network

Example

Input:

L₁ = 10nH, L₂ = 22nH, L₃ = 4n7

Calculation:

L_eq = 1 / (1/10e-9 + 1/22e-9 + 1/4.7e-9)
     = 1 / (1e8 + 4.545e7 + 2.128e8)
     = 1 / (3.583e8)
     ≈ 2.792 nH

Output:

Parameter	Value
L_eq	2.792 nH