Convert bar to atm
1 bar = 0.986923 atm · 1 atm = 1.01325 bar · Exact by definition
1 bar = 0.986923 atm
The same value in other units
- pascal
- 100000 Pa
- hectopascal
- 1000 hPa
- kilopascal
- 100 kPa
- millimetre of mercury
- 750.062 mmHg
- pound per square inch
- 14.5038 psi
Settings
Digits kept in the answer. Automatic keeps six, which hides floating-point noise without losing anything real.
Convert a whole list
Paste one conversion per line, written the way you would say it: "5 km to mi". Handy for a column copied out of a spreadsheet.
Pressure
bar to atm: conversion table
| bar | standard atmosphere |
|---|---|
| 1 bar | 0.986923 atm |
| 2 bar | 1.97385 atm |
| 3 bar | 2.96077 atm |
| 5 bar | 4.93462 atm |
| 10 bar | 9.86923 atm |
| 20 bar | 19.7385 atm |
| 25 bar | 24.6731 atm |
| 50 bar | 49.3462 atm |
| 100 bar | 98.6923 atm |
| 250 bar | 246.731 atm |
| 500 bar | 493.462 atm |
| 1000 bar | 986.923 atm |
| standard atmosphere | bar |
|---|---|
| 1 atm | 1.01325 bar |
| 2 atm | 2.0265 bar |
| 3 atm | 3.03975 bar |
| 5 atm | 5.06625 bar |
| 10 atm | 10.1325 bar |
| 20 atm | 20.265 bar |
| 25 atm | 25.3313 bar |
| 50 atm | 50.6625 bar |
| 100 atm | 101.325 bar |
| 250 atm | 253.313 bar |
| 500 atm | 506.625 bar |
| 1000 atm | 1013.25 bar |
How the conversion works
atm = bar × 0.98692327
Both units are defined exactly, so the precision of the bar to atm result depends only on the number of decimal places you choose.
METHOD AND SOURCES
Where the conversion factors come from
Results are calculated from the unit definitions stored in the converter, not copied from a lookup table. For exact units, every value in the table follows from the same factor shown in the formula above.
- BIPM — SI Brochure
The official definitions of the International System of Units (SI).
- NIST SP 811 — Conversion factors
Conversion-factor tables for SI and non-SI units.
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