Coupling Coefficient Calculator
Coupling coefficient of two inductors.
Work It Out And Get Clear Answers
Coupling coefficient of two inductors.
Coupling Coefficient Estimator
Enter your numbers below for an instant estimate.
How It Works
Key concepts behind this calculator
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Calculate
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Review
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Coupling Coefficient Quick Guide
Typical values for reference.
| Mutual inductance (µH) | Inductance L1 (µH) | Inductance L2 (µH) | Coupling coefficient |
|---|---|---|---|
| 5 | 20 | 10 | 0.3536 |
| 2.5 | 20 | 10 | 0.1768 |
| 10 | 20 | 10 | 0.7071 |
| 5 | 10 | 10 | 0.5 |
| 5 | 40 | 10 | 0.25 |
| Rule of thumb: check your inputs, use the result as a guide and round sensibly. | |||
Coupling Coefficient FAQ
Answers to common questions about this calculator.
k = M ÷ √(L1 × L2); k is between 0 and 1.
It uses the default inputs shown and the formula described above. Change any value and press Calculate to see how the result moves.
It is an estimate based on the inputs you enter. Check real quotes, labels, product data or official guidance for important decisions.
Yes. Replace each input with your own figures and press Calculate to update the result.