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Inductance Converter

Science

Convert inductance between henries, millihenries, microhenries, and nanohenries instantly — used for coil, transformer, and RF circuit design.

Reviewed by the thecalcu.com team · Last updated July 16, 2026

From
To
All conversionsfor 1 Microhenries (µH)
Kilohenries (kH)1.0000e-9
Henries (H)0.000001
Millihenries (mH)0.001
Microhenries (µH)1
Nanohenries (nH)1000

What is a Inductance?

The Inductance Converter converts inductance between henries (the SI unit), kilohenries, millihenries, microhenries, and nanohenries. Inductance measures a component's ability to store energy in a magnetic field and oppose changes in current flowing through it, a fundamental property of coils, transformers, and inductors used throughout electronics and RF circuit design.

Enter a value in any supported unit and the converter calculates the equivalent instantly. For the related quantity in resonant circuit design, see the Capacitance Converter.

Why Use an Inductance Converter?

Component datasheets specify inductance across a huge range of scales, nanohenries for RF trace inductance, microhenries and millihenries for typical power and signal inductors, and occasionally kilohenries for specialised large reactors. Comparing components or working through an LC resonant circuit calculation requires converting between these scales accurately.

Who Should Use This Converter?

  • RF and wireless communication engineers working with small nanohenry and microhenry inductance values in circuit design.
  • Power electronics engineers selecting filter inductors for switch-mode power supply design.
  • Audio equipment designers working with crossover network inductor specifications.
  • Electronics hobbyists and students converting inductor datasheet values for circuit calculations.

What Insights Does the Inductance Converter Give You?

The main output is the converted value in your chosen target unit, calculated precisely from the fixed multiplier relationship between units. Because inductance spans such a wide practical range, from nanohenries to kilohenries, the converter helps you sanity-check whether a value is realistic for the type of circuit or component involved.

How to use this Inductance calculator

  1. Choose your starting unit from the source dropdown, for example, "Microhenries (µH)".
  2. Enter the numeric value you want to convert in the input field.
  3. Choose your target unit from the destination dropdown, for example, "Millihenries (mH)".
  4. Read the converted result, which updates instantly as you type or change units.
  5. Use the swap (⇅) button if you need to reverse the conversion direction.
  6. Use the copy button to grab the result for a circuit design calculation or component comparison.
Show formula & methodology ↓Show less ↑

Formula & Methodology

The converter's base unit is the henry (H). Every supported unit has a fixed multiplier:

- 1 kilohenry (kH) = 1,000 H
- 1 millihenry (mH) = 0.001 H
- 1 microhenry (µH) = 0.000001 H
- 1 nanohenry (nH) = 0.000000001 H

Any conversion follows:

Result = Input × (toBase of source unit ÷ toBase of target unit)

Worked example, converting 100 µH to millihenries:

Result = 100 × (0.000001 ÷ 0.001) = 0.1 mH

This confirms how a common RF-scale inductor value translates to the slightly larger millihenry scale used in power circuit design.

Related Tools

You may also find these useful: Electric Current Converter, Electric Resistance Converter.

Frequently Asked Questions

What is inductance?
Inductance measures a component's ability to store energy in a magnetic field when current flows through it, expressed in henries, it describes how much a coil or inductor opposes changes in current, a key property in filters, transformers, and RF circuits.
How do I convert millihenries to microhenries?
Multiply the millihenry value by 1,000, since one millihenry equals 1,000 microhenries. Enter your value with 'Millihenries (mH)' as the source and 'Microhenries (µH)' as the target to apply this automatically.
Why do RF circuits typically use nanohenries and microhenries?
RF and high-frequency circuit inductors are typically very small in value (fractions of a microhenry to a few microhenries), since larger inductance values become impractical at high frequencies, nanohenries and microhenries keep these small component values in a readable range.
What is a typical inductance value for a power supply filter inductor?
Power supply filter inductors commonly range from a few microhenries to several millihenries depending on the switching frequency and current requirements, with higher switching frequencies generally allowing smaller inductance values.
How does inductance relate to a coil's physical properties?
Inductance depends on a coil's number of turns, core material, cross-sectional area, and length, more turns and a higher-permeability core material both increase inductance, which is why transformer and inductor design involves careful attention to winding geometry.
How is inductance used in LC circuit calculations?
Inductance combined with capacitance determines a circuit's resonant frequency (f = 1/(2π√(LC))), making accurate inductance values essential for designing filters, oscillators, and tuned circuits. See the [Capacitance Converter](/capacitance-converter/) for the related capacitance quantity.
Why does henry scale from kilohenries down to nanohenries?
Inductance values in practical electronics span an enormous range, from nanohenries in RF trace inductance to kilohenries in some specialised large power system reactors, requiring the full range of SI prefixes to conveniently express values across all these applications.
How is inductance measured in practice?
Inductance is commonly measured using an LCR meter, which applies an AC signal to the component and calculates inductance from the resulting voltage and current phase relationship, or through resonance-based measurement techniques for very small values.
What's the difference between self-inductance and mutual inductance?
Self-inductance describes a single coil's opposition to changes in its own current, while mutual inductance describes how a changing current in one coil induces a voltage in a nearby second coil, mutual inductance is the principle behind transformer operation.
What industries commonly need inductance unit conversion?
RF and wireless communication engineering, power electronics and switch-mode power supply design, and audio equipment design (crossover networks) all routinely work with inductance values across a wide range of scales, often needing conversion between component datasheets from different manufacturers.
Also known as
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