Convert Atmospheres to Hectopascals

Enter the pressure in atmospheres below to get the value converted to hectopascals.

Results in Hectopascals: 1 atm = 1,013.25 hPa

How to Convert Atmospheres to Hectopascals To convert an atmosphere measurement to a hectopascal measurement, multiply the pressure by the conversion ratio. One atmosphere is equal to 1,013.25 hectopascals, so use this simple formula to convert:

hectopascals = atmospheres × 1,013.25

The pressure in hectopascals is equal to the atmospheres multiplied by 1,013.25.

For example, here's how to convert 5 atmospheres to hectopascals using the formula above.
5 atm = (5 × 1,013.25) = 5,066.25 hPa

Atmospheres and hectopascals are both units used to measure pressure. Keep reading to learn more about each unit of measure.

Atmospheres

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.

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

Hectopascals

The hectopascal is equal to 100 pascals, which are defined as the pressure of one newton per square meter. The hectopascal is the internationally adopted unit used to measure atmospheric pressure.

The hectopascal is a multiple of the pascal, which is the SI derived unit for pressure. In the metric system, "hecto" is the prefix for 102. Hectopascals can be abbreviated as hPa, for example 1 hectopascal can be written as 1 hPa.

Atmosphere Measurements and Equivalent Hectopascal Conversions

Common atmosphere values converted to the equivalent hectopascal value
Atmospheres Hectopascals
1 atm 1,013 hPa
2 atm 2,027 hPa
3 atm 3,040 hPa
4 atm 4,053 hPa
5 atm 5,066 hPa
6 atm 6,080 hPa
7 atm 7,093 hPa
8 atm 8,106 hPa
9 atm 9,119 hPa
10 atm 10,133 hPa
11 atm 11,146 hPa
12 atm 12,159 hPa
13 atm 13,172 hPa
14 atm 14,186 hPa
15 atm 15,199 hPa
16 atm 16,212 hPa
17 atm 17,225 hPa
18 atm 18,239 hPa
19 atm 19,252 hPa
20 atm 20,265 hPa
21 atm 21,278 hPa
22 atm 22,292 hPa
23 atm 23,305 hPa
24 atm 24,318 hPa
25 atm 25,331 hPa
26 atm 26,345 hPa
27 atm 27,358 hPa
28 atm 28,371 hPa
29 atm 29,384 hPa
30 atm 30,398 hPa
31 atm 31,411 hPa
32 atm 32,424 hPa
33 atm 33,437 hPa
34 atm 34,451 hPa
35 atm 35,464 hPa
36 atm 36,477 hPa
37 atm 37,490 hPa
38 atm 38,504 hPa
39 atm 39,517 hPa
40 atm 40,530 hPa

More Atmosphere Pressure Conversions

Convert to Pascals
1 atm is equal to 101,325 pascals
Convert to Bars
1 atm is equal to 1.01325 bars
Convert to Millibars
1 atm is equal to 1,013.25 millibars
Convert to Kilograms Per Square Centimeter
1 atm is equal to 1.033227 kilograms per square centimeter
Convert to Kilograms Per Square Meter
1 atm is equal to 10,332.3 kilograms per square meter
Convert to Pounds Per Square Inch
1 atm is equal to 14.695964 pounds per square inch
Convert to Pounds Per Square Foot
1 atm is equal to 2,116.22 pounds per square foot
Convert to Torr
1 atm is equal to 760 torr