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Standard Atmospheres to Hectopascals Converter

Convert standard atmospheres (atm) to hectopascals (hPa), with the formula, a conversion table and exact factors.

Change the values and press Calculate to work out your own figures.

Enter a pressure, choose its unit and the unit you want. The answer is exact until it is shown, and the same value appears in every other unit.

A number, fraction (3/8), mixed number (1 1/2), scientific notation (2.5e6) or a simple sum such as 2*3.
The unit you want the answer in. Swap exchanges the two units.
Result
1,013.25 hPa
pascals
101,325 Pa
kilopascals
101.325 kPa
megapascals
0.101325 MPa
bars
1.01325 bar
millibars
1,013.25 mbar
kilograms-force per square centimeter
1.0332274528 kgf/cm²
kilograms-force per square meter
10,332.274528 kgf/m²
pounds per square inch
14.6959487755 psi
pounds per square foot
2,116.21662367 psf
torr
760 Torr
millimeters of mercury (conventional)
759.999891726 mmHg
inches of mercury (conventional)
29.9212555797 inHg

1 atm = 1,013.25 hPa

Show the working
  1. 1 atm = 1013.25 hPa
  2. 1 × 1013.25 = 1013.25 hPa

How to convert standard atmospheres to hectopascals

1 atm = 1,013.25 hPa, so multiply by 1,013.25 to go from standard atmospheres to hectopascals. Going the other way, 1 hPa = 0.000986923266716 atm.

hPa = atm × 1,013.25
atm = hPa × 0.000986923266716

Worked example:

1 atm = 1013.25 hPa
5 × 1013.25 = 5066.25 hPa

Standard Atmospheres to hectopascals table

Standard AtmospheresHectopascals
1 atm1,013.25 hPa
2 atm2,026.5 hPa
3 atm3,039.75 hPa
4 atm4,053 hPa
5 atm5,066.25 hPa
6 atm6,079.5 hPa
7 atm7,092.75 hPa
8 atm8,106 hPa
9 atm9,119.25 hPa
10 atm10,132.5 hPa
15 atm15,198.75 hPa
20 atm20,265 hPa
25 atm25,331.25 hPa
30 atm30,397.5 hPa
40 atm40,530 hPa
50 atm50,662.5 hPa
75 atm75,993.75 hPa
100 atm101,325 hPa
250 atm253,312.5 hPa
500 atm506,625 hPa
1000 atm1,013,250 hPa

About the units

Standard Atmospheres (atm)
Standard atmospheres, a specialised unit. Definition: NIST SP 811 Appendix B.8, factors for units listed alphabetically.
Hectopascals (hPa)
Hectopascals, a metric unit. Definition: BIPM SI Brochure, 9th edition (SI units, prefixes and units accepted for use with the SI).

Formula version 0.1.0Reviewed