Convert Bars to Megapascals
1 bar is 0.1 MPa. One bar is exactly 0.1 megapascals.
One bar is 0.1 megapascals. To convert bars to megapascals, multiply by 0.1; to go the other way, divide by 0.1 or multiply by 10. The factor is exact rather than rounded: it follows from NIST Special Publication 811. Exactly 100,000 pascals by definition, chosen because it sits within a per cent of atmospheric pressure at sea level.
Factor checked against the defining standard · How we check
- Bars × 0.1
value * 0.10.1 MPa
1 bar in every pressure unit
| Unit | Value | Exact factor |
|---|---|---|
| pounds per square inch | 14.50377377 psi | × 14.503773773 |
| bars (as entered) | 1 bar | — |
| pascals | 100,000 Pa | × 100,000 |
| kilopascals | 100 kPa | × 100 |
| megapascals | 0.1 MPa | × 0.1 |
| atmospheres | 0.9869232667 atm | × 0.986923266716 |
| torr | 750.0616827 Torr | × 750.061682704 |
| inches of mercury | 29.52998016 inHg | × 29.5299801647 |
Factors are entered by hand from NIST Special Publication 811 rather than derived from a units library, so the ones that terminate are exact rather than rounded.
How do you convert bars to megapascals?
- 1.Take the measurement in bars.
- 2.Multiply by 0.1 — that is how many megapascals fit in one bar.
- 3.To go back the other way, divide by 0.1, or multiply by 10.
Worked example: 25 bars to megapascals
- Formula
- bar × 0.1 = MPa
- Arithmetic
- 25 × 0.1 = 2.5 MPa
- Answer
- 25 bar = 2.5 MPa
The factor is exact, so this figure is exact too — only the display is rounded.
Bars to megapascals conversion table
| Bars | Megapascals |
|---|---|
| 1 bar | 0.1 MPa |
| 2 bar | 0.2 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 |
| 9 bar | 0.9 MPa |
| 10 bar | 1 MPa |
| 12 bar | 1.2 MPa |
| 15 bar | 1.5 MPa |
| 20 bar | 2 MPa |
| 25 bar | 2.5 MPa |
| 50 bar | 5 MPa |
| 100 bar | 10 MPa |
| 200 bar | 20 MPa |
| 300 bar | 30 MPa |
| 500 bar | 50 MPa |
| 1000 bar | 100 MPa |
| 2000 bar | 200 MPa |
| 5000 bar | 500 MPa |
| 10000 bar | 1,000 MPa |
What is a bar?
Exactly 100,000 pascals by definition, chosen because it sits within a per cent of atmospheric pressure at sea level. European tyre placards and dive computers use it.
What is a megapascal?
A million pascals. Concrete strength and hydraulic ratings are specified here: 30 MPa concrete is about 4,350 psi.
How many megapascals are in a bar?
One bar is 0.1 megapascals, exactly. Going the other way, one megapascal is 10 bars. Both figures come from the same defined relation rather than from a measurement, which is why they are the same today as they were in 1959.
Every pressure unit here
| Unit | Symbol | One of these is |
|---|---|---|
| Pounds per square inch | psi | 6894.7573 pascal |
| Bars | bar | 100000 pascal |
| Pascals | Pa | the base unit |
| Kilopascals | kPa | 1000 pascal |
| Megapascals | MPa | 1000000 pascal |
| Atmospheres | atm | 101325 pascal |
| Torr | Torr | 133.32237 pascal |
| Inches of mercury | inHg | 3386.389 pascal |
Questions people actually ask
- How many megapascals are in a bar?
- 0.1. A million pascals. Concrete strength and hydraulic ratings are specified here: 30 MPa concrete is about 4,350 psi.
- How do I convert megapascals back to bars?
- Divide by 0.1, or multiply by 10 — they are the same operation.
Other pressure conversions
Megapascals to bars — the same conversion the other way.