Convert Bar to Megapascals
1 bar equals 0.1 megapascals (MPa).
1 bar = 0.1 MPa
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk bar to megapascal converter to paste a column from Excel.
How to Convert Bar to Megapascal
- 1 bar = 0.1 MPa
- 1 MPa = 10 bar
- Example: convert 15 bar to MPa: 15 bar = 15 × 0.1 MPa = 1.5 MPa
Formula
MPa = bar ÷ 10
Derivation from SI units:
- 1 bar = 10⁵ Pa (exact, by definition)
- 1 MPa = 10⁶ Pa = 1 N/mm²
- 1 bar = 100000 Pa ÷ 1000000 Pa per MPa = 0.1 MPa
Both units are defined exactly, so the factor is exact. Bar definition: bar; Megapascal definition: megapascal.
Worked examples
- A 250 bar hydraulic system runs at 25 MPa.
250 bar × 0.1 = 25 MPa - Hydrogen vehicle tanks at 700 bar store gas at 70 MPa.
700 bar × 0.1 = 70 MPa
Bar to Megapascal conversion table
| Bar | Megapascals (MPa) |
|---|---|
| 0.01 bar | 0.001 MPa |
| 0.05 bar | 0.005 MPa |
| 0.1 bar | 0.01 MPa |
| 0.25 bar | 0.025 MPa |
| 0.5 bar | 0.05 MPa |
| 1 bar | 0.1 MPa |
| 1.01325 bar | 0.101325 MPa |
| 1.5 bar | 0.15 MPa |
| 2 bar | 0.2 MPa |
| 2.5 bar | 0.25 MPa |
| 3 bar | 0.3 MPa |
| 4 bar | 0.4 MPa |
| 5 bar | 0.5 MPa |
| 6 bar | 0.6 MPa |
| 7 bar | 0.7 MPa |
| 8 bar | 0.8 MPa |
| 10 bar | 1 MPa |
| 12 bar | 1.2 MPa |
| 16 bar | 1.6 MPa |
| 20 bar | 2 MPa |
| 25 bar | 2.5 MPa |
| 40 bar | 4 MPa |
| 100 bar | 10 MPa |
| 200 bar | 20 MPa |
| 300 bar | 30 MPa |
Where it's used
Hydraulic and high-pressure gas equipment uses bar in Europe, while calculations and material data use MPa. 10 bar = 1 MPa exactly.
Bar to other pressure units
| Conversion | 1 bar equals |
|---|---|
| bar to pascal | 100000 Pa |
| bar to kilopascal | 100 kPa |
| bar to megapascal | 0.1 MPa |
| bar to psi | 14.50377377 psi |
| bar to millibar | 1000 mbar |
| bar to decibar | 10 dbar |
| bar to torr | 750.0616827 Torr |
| bar to millimeter of mercury | 750.0615758 mmHg |
| bar to millimeter of water | 10197.16213 mmH₂O |
| bar to centimeter of water | 1019.716213 cmH₂O |
| bar to inch of water | 401.463076 inH₂O |
| bar to inch of water (60 °F) | 401.864652 inH₂O (60 °F) |
| bar to inch of mercury | 29.5299833 inHg |
| bar to atmosphere | 0.9869232667 atm |
| bar to barye | 1000000 Ba |
Frequently asked questions
Is 10 bar equal to 1 MPa?
Yes, exactly: 1 MPa = 10⁶ Pa = 10 bar.
How many megapascals are in 1 bar?
1 bar = 0.1 MPa.
How do I convert bar to megapascals?
Multiply the value in bar by 0.1, or divide it by 10. For example, 15 bar × 0.1 = 1.5 MPa.
Is the bar to MPa conversion exact?
Yes. Both units are defined exactly, and 1 bar is exactly 0.1 MPa.
Sources
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "bar".
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 7, SI prefixes.
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Bar to Megapascals. Retrieved October 17, 2026, from https://scientificconverters.com/pressure/bar-to-megapascal/
IEEE
Scientific Converters, "Convert Bar to Megapascals," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/pressure/bar-to-megapascal/