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Convert hectopascal to technical atmosphere

Here you can quickly calculate how many technical atmosphere fit in one hectopascal.
  • 1 hPa = 0.00102 at
  • 1 at = 980.665 hPa

Hectopascal to technical atmosphere conversion table

hectopascal technical atmosphere
1 0.00102
2 0.002039
5 0.005099
10 0.010197
20 0.020394
50 0.050986
100 0.101972

Hectopascal to technical atmosphere formula

To convert hectopascal to technical atmosphere, multiply by 0.00102.

1 hPa = 0.00102 at
Example: 1 hectopascal = 0.00102 technical atmosphere

Common pressure conversion mistakes

  • One atmosphere is not exactly one bar: 1 atm = 1.01325 bar = 101.325 kPa. There is also the technical atmosphere (1 kgf/cm²) at about 0.981 bar. The ~1% differences rarely matter day to day, but engineering and diving calculations need the right unit.
  • Blood pressure uses mmHg (120/80) and weather reports use hPa (around 1,013), different units that must not be mixed: 760 mmHg = 1,013.25 hPa. One mmHg is about 1.33 hPa.
  • Hectopascals and millibars are exactly the same size: 1 hPa = 1 mbar. A chart showing 1,013 mbar and one showing 1,013 hPa agree perfectly, no conversion needed. Meteorology simply renamed the unit.

Quick hectopascal and technical atmosphere conversion quiz

Score: 0

12.3 technical atmosphere equals 1.21e+4 hectopascal.

Correct answer: 12.3 technical atmosphere = 1.21e+4 hectopascal.

21.1 hectopascal equals 0.0215 technical atmosphere.

Correct answer: 21.1 hectopascal = 0.0215 technical atmosphere.

13.8 hectopascal equals 0.0141 technical atmosphere.

Correct answer: 13.8 hectopascal = 0.0141 technical atmosphere.

15.8 hectopascal equals 0.00967 technical atmosphere.

Correct answer: 15.8 hectopascal = 0.0161 technical atmosphere.

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