Inches Of Mercury to Atmospheres

Convert inches of mercury (inHg) to atmospheres (atm). Type in either box; the other updates as you go.

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1 inHg = 0.033421057 atm

1 inch of mercury equals0.03342105739 atm
1 atmosphere equals29.92125558 inHg
Formulaatm = inHg × 0.03342105739

How to convert inches of mercury to atmospheres

To convert inches of mercury to atmospheres, multiply the number of inches of mercury by 0.03342105739.

atm = inHg × 0.03342105739

Example

Convert 50 inches of mercury to atmospheres:

50 inHg × 0.03342105739 = 1.67105 atm

Inch Of Mercury to atmosphere conversion chart

Inches Of Mercury to atmospheres
Inches Of Mercury (inHg)Atmospheres (atm)
1 inHg0.03342106 atm
2 inHg0.06684211 atm
3 inHg0.1002632 atm
4 inHg0.1336842 atm
5 inHg0.1671053 atm
6 inHg0.2005263 atm
7 inHg0.2339474 atm
8 inHg0.2673685 atm
9 inHg0.3007895 atm
10 inHg0.3342106 atm
12 inHg0.4010527 atm
15 inHg0.5013159 atm
20 inHg0.6684211 atm
25 inHg0.8355264 atm
30 inHg1.002632 atm
40 inHg1.336842 atm
50 inHg1.671053 atm
60 inHg2.005263 atm
70 inHg2.339474 atm
75 inHg2.506579 atm
80 inHg2.673685 atm
90 inHg3.007895 atm
100 inHg3.342106 atm
150 inHg5.013159 atm
200 inHg6.684211 atm
250 inHg8.355264 atm
500 inHg16.71053 atm
1,000 inHg33.42106 atm

Going the other way? See the atmospheres to inches of mercury chart.

About the units

Inch Of Mercury (inHg)

An inch of mercury is about 3,386 pascals. US weather reports and aviation altimeters use inHg.

Atmosphere (atm)

A standard atmosphere is exactly 101,325 pascals, average air pressure at sea level.

Frequently asked questions

How many atmospheres are in an inch of mercury?

There are 0.03342105739 atmospheres in an inch of mercury.

How many inches of mercury are in an atmosphere?

There are 29.92125558 inches of mercury in an atmosphere.

How do you convert inches of mercury to atmospheres?

To convert inches of mercury to atmospheres, multiply the number of inches of mercury by 0.03342105739.

What is 50 inches of mercury in atmospheres?

50 inches of mercury equals 1.67105 atmospheres.

Convert between psi, bar, kilopascals, atmospheres and millimeters of mercury. Open the pressure converter to see a value in every unit at once.