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Atmosphere en bar

bar, psi and atm appear in different fields. Tyre, weather and lab values need context.

Unit console

Convertir des unités avec formule, contexte et précision

UnitCloud est un laboratoire de mesure local pour le quotidien, la technique, l'informatique, l'énergie, la mobilité et le design.

De1 atm
Résultat1,01325 bar
Factor1 atm = 1,01325 bar
Source basisBIPM SI Brochure · NIST Guide to SI Appendix B.8

Examples

011 atm = 1,01325 bar

Example value from the reference table. Internal calculation uses stored factors; display output is rounded.

02Erreur fréquente

bar, psi and atm appear in different fields. Tyre, weather and lab values need context.

03Unité de base: Pa

1 atm = 101,325 Pa. Then the value is converted through the base unit Pa into bar.

Tableau

Atmospherebar
11,01325
22,0265
55,06625

Formule

1 atm = 101,325 Pa. Then the value is converted through the base unit Pa into bar.

Sources

BIPM SI BrochureSI base units, prefixes and official SI context.NIST Guide to SI Appendix B.8Alphabetical conversion factors including pressure and force units.

Conversions liées

bar en psibar → psiPressionpsi en barpsi → barPressionKilopascal en psikPa → psiPression

Search and practice paths

Search and practice paths

FormuleTableauExamplesErreur fréquenteEveryday/engineeringExcel/CSVConvertisseur par lotPrint view
psiTyre pressure, bar and psi
Factor origin

Factors come from the stored source family and are not derived from rounded display values.

Rounding rule

UnitCloud keeps calculating with stored factors and rounds only the displayed output by selected precision.

When not to use

Do not use as the sole basis for official, medical, safety-critical or contractual decisions.

Citation

Citation note: UnitCloud, conversion with formula, sources current as of May 2026. Pression. Source basis: BIPM SI Brochure · NIST Guide to SI Appendix B.8.

Common questions

What is the factor for Atmosphere en bar?

1 atm = 1,01325 bar

Which formula does Atmosphere en bar use?

1 atm = 101,325 Pa. Then the value is converted through the base unit Pa into bar.

When should I verify the result?

Do not use as the sole basis for official, medical, safety-critical or contractual decisions.