Bar to Megapascal Converter
One Bar equals 0.1 Megapascal (1 bar = 0.1 MPa). Multiply a Bar value by 0.1 to get the equivalent in Megapascal. Use the calculator above for instant results, or follow the formula, worked examples, and reference table below.
Formula
MPa = bar × 0.1
Multiply the Bar value by 0.1 to get the equivalent value in Megapascal.
Example Conversions
1 Bar (bar)
0.1 Megapascal (MPa)
5 Bar (bar)
0.5 Megapascal (MPa)
10 Bar (bar)
1 Megapascal (MPa)
25 Bar (bar)
2.5 Megapascal (MPa)
100 Bar (bar)
10 Megapascal (MPa)
Conversion Table
| Bar (bar) | Megapascal (MPa) |
|---|---|
| 0.1 | 0.01 |
| 0.5 | 0.05 |
| 1 | 0.1 |
| 2 | 0.2 |
| 5 | 0.5 |
| 10 | 1 |
| 25 | 2.5 |
| 50 | 5 |
| 100 | 10 |
| 250 | 25 |
| 500 | 50 |
| 1000 | 100 |
How to Convert Manually
Use these steps to convert Bar values to Megapascal without the calculator.
- Write down the value in Bar (bar) that you want to convert.
- Multiply that value by 0.1.
- For example, 10 Bar × 0.1 = 1 Megapascal.
- Label the result as Megapascal (MPa).
Relative Size Comparison
This chart shows the visual difference in size between exactly one Bar and one Megapascal.
About Bar and Megapascal
The bar is exactly 100,000 pascals, close to one atmosphere. European tire pressures, scuba tanks, and espresso machines are rated in bar. The megapascal is one million pascals, equal to one newton per square millimeter. Concrete strength, steel stress, and hydraulic systems are rated in megapascals. One Bar equals 0.1 Megapascal (1 bar = 0.1 MPa). Bar to Megapascal conversion comes up most often in European tire pressures and in scuba diving tank pressure, typically when figures need restating for concrete and steel strength ratings.
Precision and Rounding: Several pressure factors are exact by definition (1 atm = 101,325 Pa; 1 bar = 100,000 Pa) while others, like psi and mmHg, are derived and carry long decimals. Tire and weather readings tolerate whole-number rounding; calibration, medicine, and process engineering need the full factor before rounding.
Conversion factors per NIST Special Publication 811 and the BIPM SI Brochure (9th edition) (reference).
Worked Example
15 Bar equals 1.5 Megapascal.
15 bar × 0.1 = 1.5 MPa
FAQ
How do I convert Bar to Megapascal?
Multiply the Bar value by 0.1 to get the equivalent value in Megapascal.
What is the formula for Bar to Megapascal?
The formula is MPa = bar × 0.1.
How many Megapascal are in 1 Bar?
1 Bar equals 0.1 Megapascal.
Can I convert Megapascal back to Bar?
Yes. 1 Megapascal equals 10 Bar, and the related converter can reverse the calculation.
What are common names for Bar and Megapascal?
Bar is shown as bar and may also be searched as bars. Megapascal is shown as MPa and may also be searched as megapascals, mpa.
Was this page helpful?
Let us know if this converter met your needs.