# Convert Hectopascals to Atmospheres

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

**Results in Atmospheres:**

## How to Convert Hectopascals to Atmospheres

To convert a hectopascal measurement to a atmosphere measurement, multiply the pressure by the conversion ratio. One hectopascal is equal to 0.000987 atmospheres, so use this simple formula to convert:

The pressure in atmospheres is equal to the hectopascals multiplied by 0.000987.

**For example,**here's how to convert 5 hectopascals to atmospheres using the formula above.

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

## 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 10^{2}. Hectopascals can be abbreviated as *hPa*, for example 1 hectopascal can be written as 1 hPa.

## 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.

## Hectopascal Measurements and Equivalent Atmosphere Conversions

Hectopascals | Atmospheres |
---|---|

1 hPa | 0.000987 atm |

2 hPa | 0.001974 atm |

3 hPa | 0.002961 atm |

4 hPa | 0.003948 atm |

5 hPa | 0.004935 atm |

6 hPa | 0.005922 atm |

7 hPa | 0.006908 atm |

8 hPa | 0.007895 atm |

9 hPa | 0.008882 atm |

10 hPa | 0.009869 atm |

11 hPa | 0.010856 atm |

12 hPa | 0.011843 atm |

13 hPa | 0.01283 atm |

14 hPa | 0.013817 atm |

15 hPa | 0.014804 atm |

16 hPa | 0.015791 atm |

17 hPa | 0.016778 atm |

18 hPa | 0.017765 atm |

19 hPa | 0.018752 atm |

20 hPa | 0.019738 atm |

21 hPa | 0.020725 atm |

22 hPa | 0.021712 atm |

23 hPa | 0.022699 atm |

24 hPa | 0.023686 atm |

25 hPa | 0.024673 atm |

26 hPa | 0.02566 atm |

27 hPa | 0.026647 atm |

28 hPa | 0.027634 atm |

29 hPa | 0.028621 atm |

30 hPa | 0.029608 atm |

31 hPa | 0.030595 atm |

32 hPa | 0.031582 atm |

33 hPa | 0.032568 atm |

34 hPa | 0.033555 atm |

35 hPa | 0.034542 atm |

36 hPa | 0.035529 atm |

37 hPa | 0.036516 atm |

38 hPa | 0.037503 atm |

39 hPa | 0.03849 atm |

40 hPa | 0.039477 atm |

## More Hectopascal Pressure Conversions

- Convert to Pascals
- 1 hPa is equal to 100 pascals
- Convert to Bars
- 1 hPa is equal to 0.001 bars
- Convert to Millibars
- 1 hPa is equal to 1 millibars
- Convert to Kilograms Per Square Centimeter
- 1 hPa is equal to 0.00102 kilograms per square centimeter
- Convert to Kilograms Per Square Meter
- 1 hPa is equal to 10.197162 kilograms per square meter
- Convert to Pounds Per Square Inch
- 1 hPa is equal to 0.014504 pounds per square inch
- Convert to Pounds Per Square Foot
- 1 hPa is equal to 2.088546 pounds per square foot
- Convert to Torr
- 1 hPa is equal to 0.750062 torr