Inches of Mercury to Torrs Converter

How to convert inches of mercury to torrs

FormulaTorr = inHg × 25.40000362

Multiply the value in inches of mercury by 25.40000362. To go the other way, multiply by 0.03937007313 (or divide by 25.40000362).

An inch of mercury is larger than a torr: one inch of mercury contains 25.40000362 torrs.

Worked examples

1 inch of mercury1 inHg × 25.40000362 = 25.40000362 Torr
5 inches of mercury5 inHg × 25.40000362 = 127.0000181 Torr
10 inches of mercury10 inHg × 25.40000362 = 254.0000362 Torr
20 inches of mercury20 inHg × 25.40000362 = 508.0000724 Torr
100 inches of mercury100 inHg × 25.40000362 = 2,540.000362 Torr

Inches of mercury to torrs conversion table

Values are calculated by the conversion engine and rounded to 8 significant figures.

Inches of mercury to torrs: 0.1–10 inHg
Inches of mercury (inHg)	Torrs (Torr)
0.1 inHg	2.5400004 Torr
0.25 inHg	6.3500009 Torr
0.5 inHg	12.700002 Torr
1 inHg	25.400004 Torr
2 inHg	50.800007 Torr
3 inHg	76.200011 Torr
4 inHg	101.60001 Torr
5 inHg	127.00002 Torr
6 inHg	152.40002 Torr
7 inHg	177.80003 Torr
8 inHg	203.20003 Torr
9 inHg	228.60003 Torr
10 inHg	254.00004 Torr

Inches of mercury to torrs: 12–1,000 inHg
Inches of mercury (inHg)	Torrs (Torr)
12 inHg	304.80004 Torr
15 inHg	381.00005 Torr
20 inHg	508.00007 Torr
25 inHg	635.00009 Torr
30 inHg	762.00011 Torr
40 inHg	1,016.0001 Torr
50 inHg	1,270.0002 Torr
75 inHg	1,905.0003 Torr
100 inHg	2,540.0004 Torr
250 inHg	6,350.0009 Torr
500 inHg	12,700.002 Torr
1,000 inHg	25,400.004 Torr

About the units

Inch of mercury (inHg)

About 3,386.39 Pa. US weather reports and aircraft altimeters use inches of mercury (standard is 29.92 inHg). One inch of mercury equals 3,386.38864 pascals (Pa).

Torr (Torr)

Exactly 1/760 of a standard atmosphere; used in vacuum technology. One torr equals 133.3223684 pascals (Pa).

Frequently asked questions

How many torrs are in one inch of mercury?

There are 25.40000362 torrs in one inch of mercury, and this value is exact by definition.

How do I convert inches of mercury to torrs?

Multiply the number of inches of mercury by 25.40000362. For example, 10 inHg × 25.40000362 = 254.0000362 Torr.

How many inches of mercury are in one torr?

One torr equals 0.03937007313 inches of mercury. That is the reverse factor, 1 ÷ 25.40000362.

What is 10 inches of mercury in torrs?

10 inHg = 254.0000362 Torr.

Is this inHg to Torr converter accurate?

Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.