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Hectopascals to Atmospheres

Convert hectopascals (hPa) to atmospheres (atm). Type in either box; the other updates as you go.

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1 hPa = 0.00098692327 atm

1 hectopascal equals0.0009869232667 atm
1 atmosphere equals1,013.25 hPa
Formulaatm = hPa ÷ 1,013.25

How to convert hectopascals to atmospheres

To convert hectopascals to atmospheres, divide the number of hectopascals by 1,013.25.

atm = hPa ÷ 1,013.25

Example

Convert 50 hectopascals to atmospheres:

50 hPa ÷ 1,013.25 = 0.0493462 atm

Hectopascal to atmosphere conversion chart

Hectopascals (hPa)Atmospheres (atm)
10 hPa0.009869233 atm
20 hPa0.01973847 atm
30 hPa0.0296077 atm
40 hPa0.03947693 atm
50 hPa0.04934616 atm
60 hPa0.0592154 atm
70 hPa0.06908463 atm
80 hPa0.07895386 atm
90 hPa0.08882309 atm
100 hPa0.09869233 atm
120 hPa0.1184308 atm
150 hPa0.1480385 atm
200 hPa0.1973847 atm
250 hPa0.2467308 atm
300 hPa0.296077 atm
400 hPa0.3947693 atm
500 hPa0.4934616 atm
600 hPa0.592154 atm
700 hPa0.6908463 atm
750 hPa0.7401925 atm
800 hPa0.7895386 atm
900 hPa0.8882309 atm
1,000 hPa0.9869233 atm
1,500 hPa1.480385 atm
2,000 hPa1.973847 atm
2,500 hPa2.467308 atm
5,000 hPa4.934616 atm
10,000 hPa9.869233 atm

Going the other way? See the atmospheres to hectopascals chart.

About the units

Hectopascal (hPa)

A hectopascal is 100 pascals, exactly one millibar. Weather maps give air pressure in hPa.

Atmosphere (atm)

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

Frequently asked questions

How many atmospheres are in a hectopascal?

There are 0.0009869232667 atmospheres in a hectopascal.

How many hectopascals are in an atmosphere?

There are 1,013.25 hectopascals in an atmosphere.

How do you convert hectopascals to atmospheres?

To convert hectopascals to atmospheres, divide the number of hectopascals by 1,013.25.

What is 50 hectopascals in atmospheres?

50 hectopascals equals 0.0493462 atmospheres.

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