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Atmospheres to Bars Converter

1 atm = 1.01325 bar. Type any value to convert atmospheres to bars.

1 atm = 1.01325 bar

Formula: bar = atm × 1.01325

Common values
Decimals
In every unit 13 units
Pascal (Pa) 101,325 Pa
Hectopascal (hPa) 1,013.25 hPa
Kilopascal (kPa) 101.325 kPa
Megapascal (MPa) 0.101325 MPa
Millibar (mbar) 1,013.25 mbar
Bar (bar) 1.01325 bar
Standard atmosphere (atm) 1 atm
Technical atmosphere (at) 1.033227453 at
Pound per square inch (psi) 14.69594878 psi
Millimeter of mercury (mmHg) 759.9998917 mmHg
Torr (Torr) 760 Torr
Inch of mercury (inHg) 29.9212524 inHg
Inch of water (inH₂O) 406.7824617 inH₂O

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If you continue, the file is uploaded over an encrypted connection and converted on our server. You can keep using the site meanwhile. The original is deleted as soon as it is converted; the result is kept for 6 hours so you can download it, and you can delete it at any time. Files are never shared or used for anything else.

Calculated in your browser – nothing you type is sent anywhere. Privacy details

Atmospheres to bars table

Formula: bar = atm × 1.01325

Standard atmosphere (atm)Bar (bar)
0.1 atm0.101325 bar
0.25 atm0.2533125 bar
0.5 atm0.506625 bar
1 atm1.01325 bar
2 atm2.0265 bar
3 atm3.03975 bar
4 atm4.053 bar
5 atm5.06625 bar
6 atm6.0795 bar
7 atm7.09275 bar
8 atm8.106 bar
9 atm9.11925 bar
10 atm10.1325 bar
12 atm12.159 bar
15 atm15.19875 bar
20 atm20.265 bar
25 atm25.33125 bar
30 atm30.3975 bar
40 atm40.53 bar
50 atm50.6625 bar
60 atm60.795 bar
75 atm75.99375 bar
100 atm101.325 bar
150 atm151.9875 bar
200 atm202.65 bar
250 atm253.3125 bar
500 atm506.625 bar
1,000 atm1,013.25 bar

How to use: Atmospheres to Bars

  1. 1 Type the value in atmospheres.
  2. 2 The result in bars appears at once – or type in the bars field to convert back.
  3. 3 Pick a common value, round to fewer decimals or swap the units with one click.
  4. 4 Copy the result, or open “In every unit” to see the value in all units of pressure.

About this tool

Standard atmosphere (atm) is a unit of pressure; 1 atm = 101,325 Pa. Bar (bar) is a unit of pressure (metric, accepted for use with the SI); 1 bar = 100,000 Pa.

To convert atmospheres to bars, multiply the value by 1.01325 (bar = atm × 1.01325). Example: 2.5 atm = 2.533125 bar.

Calculated in your browser – nothing you type is sent anywhere.

Frequently asked questions

How do I convert atmospheres to bars?

To convert atmospheres to bars, multiply the value by 1.01325: bar = atm × 1.01325. For example 2.5 atm = 2.533125 bar.

What is 1 atm in bars?

1 atm = 1.01325 bar. The other way round, 1 bar = 0.9869232667 atm.

How exact is the result?

The converter uses the official definitions of both units and shows up to 10 significant digits; choose 0–6 decimals to round. Both units are defined exactly in terms of each other, so the factor itself is exact.

Can I convert other units of pressure here?

Yes – choose any of the 13 units of pressure in the From and To lists, or switch to another measurement at the top.

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