Pressure conversion

Convert Bar to Standard atmosphere

1 bar (bar) equals 0.986923266716 standard atmosphere (atm). Enter any value below to convert from bar to atm.

Enter a value and choose units. Results update instantly.

1 bar = 0.9869232667 atm

All Pressure units

From 1 bar
UnitValue
Pascal Pa 100,000
Kilopascal kPa 100
Megapascal MPa 0.1
Bar bar 1
Millibar mbar 1,000
Standard atmosphere atm 0.9869232667
Pound per square inch psi 14.503773773
Torr Torr 750.0616827042
Millimeter of mercury mmHg 750.0615758457
Inch of mercury inHg 29.5299801647
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Formula

bar to atm conversion formula

Use this relationship for a direct conversion:

atm = bar x 0.986923266716

Worked example

2 bar = 1.9738465334 atm.

Conventional mercury-column units are not measurements adjusted for local temperature or gravity.

Quick reference

Bar to Standard atmosphere table

Bar (bar)Standard atmosphere (atm)
0.010.0098692327
0.10.0986923267
10.9869232667
21.9738465334
54.9346163336
109.8692326672
2524.6730816679
5049.3461633358
10098.6923266716
1,000986.923266716

From unit

About the bar

Exactly 100,000 pascals.

Symbol: bar

To unit

About the standard atmosphere

Exactly 101,325 pascals.

Symbol: atm

Keep converting

Related conversions

Standard atmosphere to BarReverse this conversion Bar to Pascalbar to PaBar to Kilopascalbar to kPaBar to Megapascalbar to MPaBar to Millibarbar to mbarBar to Pound per square inchbar to psiBar to Torrbar to Torr

Source

Conversion standard

Definitions are checked against NIST SP 811: Pressure units. Calculations use full internal precision before display rounding.

View the complete pressure converter

Questions

bar to atm FAQ

How do you convert bar to standard atmosphere?

Use the formula atm = bar x 0.986923266716. 1 bar (bar) equals 0.986923266716 standard atmosphere (atm).

Is the bar to atm conversion exact?

Both unit definitions use exact factors. Only the displayed decimal may be rounded.