Parallel Inductor Calculator Formula

Understand the math behind the parallel inductor calculator. Each variable explained with a worked example.

Formulas Used

Total Inductance

total_l = 1 / (1/l1_mh + 1/l2_mh)

Variables

VariableDescriptionDefault
l1_mhInductor L1(mH)10
l2_mhInductor L2(mH)22

How It Works

Parallel Inductors

1/L_total = 1/L1 + 1/L2

Same formula as parallel resistors. Assumes no mutual coupling between inductors.

Worked Example

10 mH and 22 mH in parallel.

l1_mh = 10l2_mh = 22
  1. 011/L = 1/10 + 1/22 = 0.1 + 0.04545 = 0.14545
  2. 02L_total = 6.875 mH

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Open Parallel Inductor Calculator