How many microhenries are in one millihenry?

One millihenry (1 mH) equals exactly 1,000 microhenries (1,000 µH). The prefix "milli" means 10⁻³ and "micro" means 10⁻⁶, so the factor between them is 10³ = 1,000.

What is the formula to convert mH to µH?

Multiply the millihenry value by 1,000: µH = mH × 1,000. For example, 2.5 mH = 2,500 µH.

Why do datasheets sometimes use mH and sometimes µH?

Convention varies by application. Power-supply chokes and audio inductors are typically large enough to be rated in millihenries, while RF coils, ferrite beads, and chip inductors are smaller and more conveniently expressed in microhenries or nanohenries.

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 mH?

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

Is this converter accurate enough for engineering use?

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

Millihenries to Microhenries Converter

Name: Millihenries to Microhenries Converter
Availability: InStock
Author: Nham Vu

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

Enter Value in Millihenries (mH)

Inductance (mH)

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 mH = 1,000 µH
Nanohenry	nH	10⁻⁹	1 µH = 1,000 nH

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Summary

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

How it works

Enter an inductance value in the millihenries (mH) field.
The converter multiplies by 1,000 to produce microhenries (µH).
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 ferrite bead inductance from mH datasheets to µH for simulation.
Cross-checking filter inductor specs when components are labeled in different units.
Translating SPICE netlist values between millihenries and microhenries.
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 mH and µH unit labels.

Frequently Asked Questions

Last updated: 2026-07-24 · Reviewed by Nham Vu