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
| Variable | Description | Default |
|---|---|---|
l1_mh | Inductor L1(mH) | 10 |
l2_mh | Inductor 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
- 011/L = 1/10 + 1/22 = 0.1 + 0.04545 = 0.14545
- 02L_total = 6.875 mH
Frequently Asked Questions
Is parallel inductance smaller than each?
Yes, just like parallel resistance.
What about mutual coupling?
If inductors are physically close, mutual inductance changes the result. This formula assumes no coupling.
When would I parallel inductors?
To reduce inductance or share current in power applications.
Ready to run the numbers?
Open Parallel Inductor Calculator