How many millihenries are in one microhenry?

One microhenry (1 µH) equals exactly 0.001 millihenries (0.001 mH). The prefix "micro" means 10⁻⁶ and "milli" means 10⁻³, so the factor between them is 10⁻³, meaning you divide by 1,000.

What is the formula to convert µH to mH?

Divide the microhenry value by 1,000: mH = µH ÷ 1,000. For example, 2,500 µH = 2.5 mH.

Why do datasheets sometimes use µH and sometimes mH?

Convention varies by application. RF coils, ferrite beads, and chip inductors are small enough to be rated in microhenries, while power-supply chokes and audio inductors are larger and more conveniently expressed in millihenries.

What is the difference between µH and uH?

They represent the same unit. "µH" uses the Greek letter mu (µ) for "micro," while "uH" is the ASCII-safe substitute used in software, datasheets, and schematics that cannot render the µ character.

Can I enter decimal values like 0.47 µH?

Yes. The converter accepts any positive number including decimals. For example, 470 µH = 0.47 mH and 1 µH = 0.001 mH.

Is this converter accurate enough for engineering use?

Yes. The conversion is an exact division with no approximation. Results are displayed with up to 6 significant figures to avoid floating-point display noise.

Microhenries to Millihenries Converter

Enter an inductance in microhenries and instantly get the equivalent in millihenries plus other inductance units.

Enter Value in Microhenries (µH)

Inductance (µH)

Common Values

Conversion Results

Enter a value on the left to see conversions.

Inductance Unit Reference

Unit	Symbol	Value in Henries	Equivalence
Henry	H	1	Base unit
Millihenry	mH	10⁻³	1,000 mH = 1 H
Microhenry	µH	10⁻⁶	1,000 µH = 1 mH
Nanohenry	nH	10⁻⁹	1 µH = 1,000 nH

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Summary

This converter translates inductance from microhenries (µH) to millihenries (mH) and other inductance units. One microhenry equals exactly 0.001 millihenries — the prefix "micro" represents 10⁻⁶ and "milli" represents 10⁻³, so moving from µH to mH divides by 1,000. Microhenries are the standard unit for RF coils, ferrite beads, and chip inductors, while millihenries appear on power-supply chokes and audio transformers.

How it works

Enter an inductance value in the microhenries (µH) field.
The converter divides by 1,000 to produce millihenries (mH).
Results for H and nH are computed at the same time.
Click the copy icon next to any result to copy the numeric value.
Use the Clear button or preset buttons to reset or try a common value.

Use cases

Converting RF coil or chip inductor values from µH datasheets to mH for simulation.
Cross-checking filter inductor specs when components are labeled in different units.
Translating SPICE netlist values between microhenries and millihenries.
Verifying switched-mode power supply choke values during component selection.
Teaching the micro/milli relationship in electrical engineering coursework.
Converting energy storage calculations that mix µH and mH unit labels.

Frequently Asked Questions

Last updated: 2026-07-14 · Reviewed by Nham Vu