When to use this calculator
Add two uncoupled inductors connected in series. Assumes no mutual magnetic coupling between the inductors.
Explore the dc circuits & components calculators for other questions in this topic. For a related calculation, use the Series Resistance Calculator: Add three resistors connected in series.
PUTTING IT INTO PRACTICE
Series Inductance: a worked example
The values below are an illustrative example, not a recommendation. Replace them with measurements or assumptions that match your question.
| Input | Example value |
|---|---|
| First inductance (mH) | 10 |
| Second inductance (mH) | 20 |
| Result | 30 mH |
- Check the input labels and enter the example values above.
- Apply the relationship: Equivalent inductance = L₁+L₂.
- The result is 30 mH, rounded for display.
How to interpret your result
Assumes no mutual magnetic coupling between the inductors.
Ideal component models omit tolerances, heat and parasitic effects. Distinguish nominal energy from usable energy for batteries. Component ratings and installation requirements need separate manufacturer and design checks.
Frequently asked questions
Can these calculations select a safe installation rating?
No. They explain ideal relationships and do not include every thermal, protective or regulatory requirement.
When is the series inductance calculator useful?
Add two uncoupled inductors connected in series. Assumes no mutual magnetic coupling between the inductors.
How do I use the series inductance calculator?
Enter first inductance (mh), second inductance (mh). The result updates automatically. Use the units shown beside each input; the example values illustrate the method.
Which formula does this calculator use?
Equivalent inductance = L₁+L₂.
What should I check before using the result?
Assumes no mutual magnetic coupling between the inductors.
How are results rounded?
Scalar numbers display up to six decimal places, with scientific notation for very large or small values. Text, fraction, date and schedule outputs use the format described on the tool. Intermediate calculations use JavaScript floating-point arithmetic. Keep sensible precision for your measurements.
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