1 Standard Atmosphere to Bar

1 atm ≈ 1.0132 bar

Calculation: bar = 1 atm × 1.01325 ≈ 1.0132 bar

Standard Atmosphere to Bar Converter

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How much pressure is 1 atm?

14.7 psi (101 kPa) is comparable to standard atmospheric pressure at sea level (101.325 kPa).

What does 1 atm look like?

Illustration of standard atmospheric pressure
14.7 psi (101 kPa) is comparable to standard atmospheric pressure at sea level (101.325 kPa).

Did you know? Standard atmosphere (1 atm) is 101.325 kPa.

Sea-level atmospheric pressure is 101.325 kPa = 14.696 psi = 760 mmHg = 1 atm exactly.

How to Convert Standard Atmosphere to Bar

1 standard atmosphere = 1.01325 bar

Bar = Standard Atmosphere × 1.01325

Example: 1 atm × 1.01325 = 1.0133 bar

Reverse Conversion

To convert bar back to standard atmospheres:

  • Remember, 1 bar equals 0.986923 standard atmospheres.
  • To convert 1.0133 bar to atm, multiply 1.0133 x 0.986923, resulting in 1 atm.

1 atm is also equal to:

About these units

Standard atmosphere: Standard unit of atmospheric pressure defined as exactly 101,325 pascals.

Bar: Metric pressure unit equal to exactly 100,000 pascals.

Frequently Asked Questions

How much is 1 standard atmosphere in bar?

1 standard atmosphere equals 1.0133 bar. This is calculated by multiplying 1 by the conversion factor 1.01325.

What does 1 standard atmosphere look like in bar?

1 standard atmosphere equals 1.0133 bar, a conversion relevant in tire pressure measurement, weather forecasting, and engineering applications.

How do you calculate 1 standard atmosphere to bar?

Multiply 1 by the conversion factor 1.01325. The calculation is 1 × 1.01325 = 1.0133 bar. This factor is defined by international measurement standards.

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1 standard atmosphere = 1.01325 bar
1 standard atmosphere = 1.01325 bar — conversion chart

Nearby Conversions

2 standard atmospheres2.027 bar 3 standard atmospheres3.04 bar 4 standard atmospheres4.053 bar 5 standard atmospheres5.066 bar 6 standard atmospheres6.08 bar 7 standard atmospheres7.093 bar 8 standard atmospheres8.106 bar 9 standard atmospheres9.119 bar 10 standard atmospheres10.13 bar 11 standard atmospheres11.15 bar

For general conversions between standard atmospheres and bar, see the standard atmospheres to bar converter.

Conversion factors verified against NIST, BIPM, ISO 80000-4 1 atm = 101 325 Pa by definition (BIPM). Last reviewed: March 2026
Adilson Fernandes By Adilson Fernandes
Tiago Fernandes Reviewed by Tiago Fernandes

All unit conversions on CoolConversion use conversion factors defined or documented by internationally recognised standards bodies (such as ISO and NIST), including both SI and non-SI units.