Convert inHg to mmHg
Inches of mercury to millimeters of mercury. Enter a value to convert, or use the inHg to mmHg chart further down the page.
1 inch of mercury equals 25.4 millimeters of mercury. Going the other way, 1 millimeter of mercury = 0.03937007874 inches of mercury.
How to convert inHg to mmHg
To convert inches of mercury to millimeters of mercury, multiply the inch of mercury value by 25.4. You can also divide by 0.03937007874 to get the same answer.
mmHg = inHg × 25.4
Worked example
Convert 15 inHg to millimeters of mercury:
15 inHg = 381 mmHg
inHg to mmHg conversion chart
Use this inHg to mmHg table for quick reference without typing anything.
| inches of mercury (inHg) | millimeters of mercury (mmHg) |
|---|---|
| 0.01 inHg | 0.254 mmHg |
| 0.1 inHg | 2.54 mmHg |
| 1 inHg | 25.4 mmHg |
| 2 inHg | 50.8 mmHg |
| 3 inHg | 76.2 mmHg |
| 5 inHg | 127 mmHg |
| 10 inHg | 254 mmHg |
| 20 inHg | 508 mmHg |
| 50 inHg | 1,270 mmHg |
| 100 inHg | 2,540 mmHg |
| 1,000 inHg | 25,400 mmHg |
What is a inch of mercury?
An inch of mercury is about 3,386.39 pascals. Aircraft altimeters and US weather reports use it; the standard sea-level setting is 29.92 inHg.
What is a millimeter of mercury?
A millimeter of mercury is about 133.32 pascals. It is the unit used for blood pressure readings.
Frequently asked questions
How many mmHg are in an inch of mercury?
1 inHg equals 25.4 mmHg. Going the other way, 1 mmHg is 0.03937007874 inHg.
How do you convert inHg to mmHg?
To convert inches of mercury to millimeters of mercury, multiply the inch of mercury value by 25.4. You can also divide by 0.03937007874 to get the same answer.
What is 10 inHg in mmHg?
10 inHg equals 254 mmHg. The conversion chart on this page lists the other values people look up most often.
Related pressure conversions
Convert inHg to other units
- mmHg to inHg
- inHg to psi
- inHg to bar
- inHg to pascals
- inHg to kPa
- inHg to atm
- inHg to torr
- inHg to millibars
Convert other units to mmHg
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