Atmosphere Conversion Calculator

Enter a value in atmospheres below to convert to another unit of pressure.

atm

Result: Converted Pressure

Learn how we calculate this below

Atmosphere Conversion Calculators

You can also convert pressure using one of our atmosphere converters below.

What Is an Atmosphere?

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An atmosphere is a unit used to measure pressure.

Atmospheres can be abbreviated as atm; for example, 1 atmosphere can be written as 1 atm.

How Much Is an Atmosphere?

The atmosphere is a reference measure of pressure equal to 101,325 pascals or 1,013,250 dynes. The atmosphere was originally defined as the pressure of 760 millimeters of mercury at standard gravity at 0 °C, but was later redefined in 1954 to be equal to 1,013,250 dynes.

How to Convert Atmospheres

To convert atmospheres to another unit of pressure, you need to multiply the value by a conversion factor. A conversion factor is a numerical value used to change the units of a measurement without changing the value.[1]

You can find the conversion factors for atmospheres in the conversion table below.

Then, multiply the pressure measurement by the conversion factor to find the equivalent value in the desired unit of measurement.

atmospheres × conversion factor = result

You can also use a calculator, such as one of the converters above, for the conversion.

Atmosphere Conversion Table

Common atmosphere values and equivalent imperial and metric pressure measurements
atmospheres pascals hectopascals kilopascals bars millibars kilograms per square centimeter kilograms per square meter pounds per square inch pounds per square foot torr
1 atm 101,325 Pa 1,013 hPa 101.325 kPa 1.01325 bar 1,013 mbar 1.033227 kg/cm² 10,332 kg/m² 14.695964 psi 2,116 psf 760 Torr
2 atm 202,650 Pa 2,027 hPa 202.65 kPa 2.0265 bar 2,027 mbar 2.066455 kg/cm² 20,665 kg/m² 29.391929 psi 4,232 psf 1,520 Torr
3 atm 303,975 Pa 3,040 hPa 303.975 kPa 3.03975 bar 3,040 mbar 3.099682 kg/cm² 30,997 kg/m² 44.087893 psi 6,349 psf 2,280 Torr
4 atm 405,300 Pa 4,053 hPa 405.3 kPa 4.053 bar 4,053 mbar 4.13291 kg/cm² 41,329 kg/m² 58.783857 psi 8,465 psf 3,040 Torr
5 atm 506,625 Pa 5,066 hPa 506.625 kPa 5.06625 bar 5,066 mbar 5.166137 kg/cm² 51,661 kg/m² 73.479822 psi 10,581 psf 3,800 Torr
6 atm 607,950 Pa 6,080 hPa 607.95 kPa 6.0795 bar 6,080 mbar 6.199365 kg/cm² 61,994 kg/m² 88.175786 psi 12,697 psf 4,560 Torr
7 atm 709,275 Pa 7,093 hPa 709.275 kPa 7.09275 bar 7,093 mbar 7.232592 kg/cm² 72,326 kg/m² 102.87175 psi 14,814 psf 5,320 Torr
8 atm 810,600 Pa 8,106 hPa 810.6 kPa 8.106 bar 8,106 mbar 8.26582 kg/cm² 82,658 kg/m² 117.567715 psi 16,930 psf 6,080 Torr
9 atm 911,925 Pa 9,119 hPa 911.925 kPa 9.11925 bar 9,119 mbar 9.299047 kg/cm² 92,990 kg/m² 132.263679 psi 19,046 psf 6,840 Torr
10 atm 1,013,250 Pa 10,133 hPa 1,013 kPa 10.1325 bar 10,133 mbar 10.332275 kg/cm² 103,323 kg/m² 146.959643 psi 21,162 psf 7,600 Torr
11 atm 1,114,575 Pa 11,146 hPa 1,115 kPa 11.14575 bar 11,146 mbar 11.365502 kg/cm² 113,655 kg/m² 161.655608 psi 23,278 psf 8,360 Torr
12 atm 1,215,900 Pa 12,159 hPa 1,216 kPa 12.159 bar 12,159 mbar 12.398729 kg/cm² 123,987 kg/m² 176.351572 psi 25,395 psf 9,120 Torr
13 atm 1,317,225 Pa 13,172 hPa 1,317 kPa 13.17225 bar 13,172 mbar 13.431957 kg/cm² 134,320 kg/m² 191.047536 psi 27,511 psf 9,880 Torr
14 atm 1,418,550 Pa 14,186 hPa 1,419 kPa 14.1855 bar 14,186 mbar 14.465184 kg/cm² 144,652 kg/m² 205.7435 psi 29,627 psf 10,640 Torr
15 atm 1,519,875 Pa 15,199 hPa 1,520 kPa 15.19875 bar 15,199 mbar 15.498412 kg/cm² 154,984 kg/m² 220.439465 psi 31,743 psf 11,400 Torr
16 atm 1,621,200 Pa 16,212 hPa 1,621 kPa 16.212 bar 16,212 mbar 16.531639 kg/cm² 165,316 kg/m² 235.135429 psi 33,860 psf 12,160 Torr
17 atm 1,722,525 Pa 17,225 hPa 1,723 kPa 17.22525 bar 17,225 mbar 17.564867 kg/cm² 175,649 kg/m² 249.831393 psi 35,976 psf 12,920 Torr
18 atm 1,823,850 Pa 18,239 hPa 1,824 kPa 18.2385 bar 18,239 mbar 18.598094 kg/cm² 185,981 kg/m² 264.527358 psi 38,092 psf 13,680 Torr
19 atm 1,925,175 Pa 19,252 hPa 1,925 kPa 19.25175 bar 19,252 mbar 19.631322 kg/cm² 196,313 kg/m² 279.223322 psi 40,208 psf 14,440 Torr
20 atm 2,026,500 Pa 20,265 hPa 2,027 kPa 20.265 bar 20,265 mbar 20.664549 kg/cm² 206,645 kg/m² 293.919286 psi 42,324 psf 15,200 Torr

References

  1. National Institute of Standards & Technology, Unit Conversion, https://www.nist.gov/pml/owm/metric-si/unit-conversion

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