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Convert technical atmosphere to millibar

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

Technical atmosphere to millibar conversion table

technical atmosphere millibar
1 980.665
2 1961.33
5 4903.325
10 9806.65
20 19613.3
50 49033.25
100 98066.5

Formula to convert technical atmosphere to millibar

To convert technical atmosphere to millibar, multiply by 980.665.

1 at = 980.665 mbar
Example: 1 technical atmosphere = 980.665 millibar

Common mistakes in pressure conversion

  • 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 technical atmosphere to/from millibar conversion quiz

Score: 0

168 technical atmosphere equals 1.65e+5 millibar.

Correct answer: 168 technical atmosphere = 1.65e+5 millibar.

12 millibar equals 0.0184 technical atmosphere.

Correct answer: 12 millibar = 0.0122 technical atmosphere.

17.6 millibar equals 0.00897 technical atmosphere.

Correct answer: 17.6 millibar = 0.0179 technical atmosphere.

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