How do I convert Bar to Standard atmosphere (atm)?

1 bar equals 0.986923 atm using SI-based conversion and precise factors.

What is the formula to convert Bar to Standard atmosphere (atm)?

This is a linear unit conversion using a constant factor between units.

How can I share a direct bar to atm result?

Use the shareable URL: https://measurecalc.com/convert/bar-to-atmosphere

Convert Bar to Standard atmosphere (atm)

Q: Is Bar to Standard atmosphere (atm) conversion exact?

Yes, it uses exact definitions or standardized constants (e.g., 1 in = 25.4 mm).

Category: Pressure

Value From To Precision

0.986923 atm

1 bar = 0.986923 atm

High-precision rounding: 6 decimals

How to convert bar to standard atmosphere (atm)

Pressure is force per unit area. Pascals (and kPa, hPa) are SI, while bar and psi are widely used in engineering and scuba. Conversions must respect absolute vs gauge references when comparing values.

This converter calculates Bar to Standard atmosphere (atm) values by using the correct conversion rule for the Pressure category. For linear units, standardized factors are used. For temperature, the calculator applies the proper formula with offsets.

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Quick conversion table

Handy values for Bar to Standard atmosphere (atm). Click a value to open that exact result.

Bar	Standard atmosphere (atm)
1	0.986923
0.5	0.493462
2.5	2.467308
10	9.869233

Conversion formula

Linear unit conversions use standardized factors; many are exact by definition (e.g., 1 in = 25.4 mm, 1 ft = 0.3048 m).

Common mistakes

Comparing gauge pressure (psig) with absolute pressure (psia/hPa) without converting reference.
Mixing bar with atm (1 atm = 1.01325 bar).

Unit facts

Bar: One bar is exactly 100,000 Pa; convenient near-atmospheric unit used in meteorology and diving.
Standard atmosphere (atm): Standard atmosphere is exactly 101,325 Pa; reference pressure in chemistry and physics.

About Bar

Bar

Equals 100,000 Pa (exact). Handy engineering unit near mean sea-level pressure (≈1.01325 bar).

History: Introduced by early 20th-century meteorologists; remains popular in scuba, hydraulics, and weather.

About Standard atmosphere (atm)

Standard atmosphere (atm)

Exactly 101,325 Pa. Reference pressure for chemistry and gas laws; useful for normalizing conditions.

History: A conventional unit set for convenience in calculations and comparative tables.

Frequently asked questions

How many Standard atmosphere (atm) are in one Bar?

1 Bar equals 0.986923 Standard atmosphere (atm).

Is Bar to Standard atmosphere (atm) conversion exact?

Many unit conversions are exact by definition, while others use standardized conversion constants.

What is the fastest way to convert Bar to Standard atmosphere (atm)?

Enter a value in Bar, choose Standard atmosphere (atm) as the target unit, and the calculator will instantly return the result.

Convert Bar to other units

bar → pa Pascal (Pa)
bar → psi Pounds per square inch (psi)
bar → torr Torr

Convert other units to Standard atmosphere (atm)

pa → atm Pascal (Pa)
psi → atm Pounds per square inch (psi)
torr → atm Torr