Formula
H to mH conversion formula
Use this relationship for a direct conversion:
mH = H x 1,000
Worked example
2 H = 2,000 mH.
SI prefix relationships are exact.
Inductance conversion
Convert Henry to Millihenry
1 henry (H) equals 1,000 millihenry (mH). Enter any value below to convert from H to mH.
Enter a value and choose units. Results update instantly.
1 H = 1,000 mH
All Inductance units
From 1 H| Unit | Value |
|---|---|
| Picohenry pH | 1e12 |
| Nanohenry nH | 999,999,999.9999998808 |
| Microhenry μH | 1,000,000 |
| Millihenry mH | 1,000 |
| Henry H | 1 |
| Kilohenry kH | 0.001 |
| Abhenry abH | 999,999,999.9999998808 |
Recent conversions
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Quick reference
Henry to Millihenry table
| Henry (H) | Millihenry (mH) |
|---|---|
| 0.01 | 10 |
| 0.1 | 100 |
| 1 | 1,000 |
| 2 | 2,000 |
| 5 | 5,000 |
| 10 | 10,000 |
| 25 | 25,000 |
| 50 | 50,000 |
| 100 | 100,000 |
| 1,000 | 1,000,000 |
From unit
About the henry
The SI derived unit of inductance.
Symbol: H
To unit
About the millihenry
One thousandth of a henry.
Symbol: mH
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Source
Conversion standard
Definitions are checked against BIPM SI Brochure: henry. Calculations use full internal precision before display rounding.
View the complete inductance converterQuestions
H to mH FAQ
How do you convert henry to millihenry?
Use the formula mH = H x 1,000. 1 henry (H) equals 1,000 millihenry (mH).
Is the H to mH conversion exact?
Both unit definitions use exact factors. Only the displayed decimal may be rounded.