UnitChart

Convert mmHg to inHg

millimeters of mercury to inches of mercury. Enter a value to convert, or use the mmHg to inHg chart further down the page.

1 mmHg = 0.0393701 inHg

1 millimeter of mercury equals 0.0393701 inches of mercury. Going the other way, 1 inch of mercury = 25.4 millimeters of mercury.

Check this before you rely on it. This converter is provided free and without warranty, and its results are not professional advice.

How to convert mmHg to inHg

To convert millimeters of mercury to inches of mercury, multiply the millimeter of mercury value by 0.03937007874. You can also divide by 25.4 to get the same answer.

inHg = mmHg × 0.03937007874

Worked example

Convert 15 mmHg to inches of mercury:

15 mmHg = 0.590551 inHg

mmHg to inHg conversion chart

Use this mmHg to inHg table for quick reference without typing anything.

mmHg to inHg conversion table
millimeters of mercury (mmHg)inches of mercury (inHg)
0.01 mmHg0.000393701 inHg
0.1 mmHg0.00393701 inHg
1 mmHg0.0393701 inHg
2 mmHg0.0787402 inHg
3 mmHg0.11811 inHg
5 mmHg0.19685 inHg
10 mmHg0.393701 inHg
20 mmHg0.787402 inHg
50 mmHg1.9685 inHg
100 mmHg3.93701 inHg
1,000 mmHg39.3701 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.

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.

Frequently asked questions

How many inHg are in a millimeter of mercury?

1 mmHg equals 0.0393701 inHg. Going the other way, 1 inHg is 25.4 mmHg.

How do you convert mmHg to inHg?

To convert millimeters of mercury to inches of mercury, multiply the millimeter of mercury value by 0.03937007874. You can also divide by 25.4 to get the same answer.

What is 10 mmHg in inHg?

10 mmHg equals 0.393701 inHg. The conversion chart on this page lists the other values people look up most often.

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