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Atmosphere to Bar

Convert atmosphere (atm) to bar (bar) — with the exact factor, a quick-reference table and a free converter that works offline.

1 atm = 1.01325 bar

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Conversion table

Atmosphere (atm)Bar (bar)
1 atm1.01325 bar
2 atm2.0265 bar
5 atm5.06625 bar
10 atm10.1325 bar
20 atm20.265 bar
50 atm50.6625 bar
100 atm101.325 bar
500 atm506.625 bar

How the conversion works

Both units measure pressure. One atmosphere equals exactly 1.01325 bar, so multiply by that factor to convert.

FAQ

How many bars in a atmosphere?

1 atm = 1.01325 bar.

How do I convert atmosphere to bar?

Multiply the atmosphere value by 1.01325. For example, 10 atm × 1.01325 = 10.1325 bar.

Where does the factor come from?

The conversion factor is defined in NIST SP 811; both units are pressure units converted through pascal.

Related conversions

Bar to Atmosphere Bar to Pound / in² Pound / in² to Bar Kilopascal to Pound / in²

Conversion factors: NIST SP 811. Computed by the same engine that powers the app.

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