Convert

bar to Megapascal

Exact answer: 1 bar = 0.1 MPa (exact – SI decimal prefix)

bar and Megapascal both belong to the Pressure family. The difference is a decimal prefix, so the factor is a clean power of ten. Pressure appears in tyre data, weather reports, hydraulics, gas cylinders and vacuum technology.

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What do you want to convert?

From1 bar

Result0.1 MPa

Factor1 bar = 0.1 MPa

Source basisBIPM SI Brochure · NIST Guide to SI Appendix B.8

Examples

011 bar = 0.1 MPa

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

02Common mistake

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

03Base unit: Pa

1 bar = 100000 Pa. Then the value is converted through the base unit Pa into Megapascal.

Table

bar to Megapascal
bar	Megapascal
1	0.1
5	0.5
10	1
50	5
100	10
1,000	100

Formula

1 bar = 100000 Pa. Then the value is converted through the base unit Pa into Megapascal.

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.

Related conversions

bar to psibar → psiPressure psi to barpsi → barPressure Atmosphere to baratm → barPressure bar to Kilopascalbar → kPaPressure

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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 reviewed: September 2026. Pressure. Source basis: BIPM SI Brochure · NIST Guide to SI Appendix B.8.

Common questions

What is the factor for bar to Megapascal?

1 bar = 0.1 MPa

Which formula does bar to Megapascal use?

1 bar = 100000 Pa. Then the value is converted through the base unit Pa into Megapascal.

What is the most common mistake?

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

When should I verify the result?

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