This converter turns bar into megapascals instantly, using the exact factor 1 bar = 0.1 megapascals. Type any number and the result updates as you go — nothing is sent to a server, so the arithmetic happens entirely in your browser.
Almost exactly atmospheric pressure; standard in European industry and diving. Used for material strength and hydraulic systems.
Because the relationship is a simple proportion, one multiplication does the whole job. The table further down gives pre-computed values for the amounts people look up most often, and the result panel also reports the reverse conversion so you can check the figure both ways.
The formula
bar- The amount you are converting, measured in bar
0.1- The exact number of megapascals in one bar
megapascals- The converted result
How it works, step by step
- Enter the number of bar you want to convert.
- The value is multiplied by 0.1, the exact conversion factor.
- The result is displayed in megapascals, rounded for readability.
- The unrounded value and the reverse conversion appear underneath so you can verify it.
Worked examples
Converting 5 bar
Multiply 5 by 0.1. That gives 0.5 megapascals. A quick sanity check: one bar is smaller than one megapascal, so the number should get smaller — and it does.
Converting 72 bar
72 × 0.1 = 7.2 megapascals. Working backwards, 7.2 ÷ 0.1 returns 72 bar, which confirms the factor is applied the right way round.
How to read your score
Frequently asked questions
How many megapascals are in one bar?
Exactly 0.1. Every conversion on this page is that single number multiplied by your input, so the result carries no rounding error beyond what is shown.
What is the formula to convert bar to megapascals?
Megapascals = bar × 0.1. To reverse it, divide instead: bar = megapascals ÷ 0.1, which is the same as multiplying by 10.
Is the bar bigger than the megapascal?
No. One bar is only 0.1 of a megapascal, so the megapascal is the larger unit.
Why does my answer differ slightly from other bar to megapascals converters?
Most differences come from rounding the factor too early. This tool keeps full double precision through the calculation and only rounds at the final display step, and it also shows the unrounded value so you can see exactly where any difference appears.
What is a bar?
Almost exactly atmospheric pressure; standard in European industry and diving.
What is a megapascal?
Used for material strength and hydraulic systems.
Bar to megapascals reference table
| Bar | Megapascals |
|---|---|
| 0.5 bar | 0.05 MPa |
| 1 bar | 0.1 MPa |
| 2 bar | 0.2 MPa |
| 3 bar | 0.3 MPa |
| 5 bar | 0.5 MPa |
| 10 bar | 1 MPa |
| 15 bar | 1.5 MPa |
| 20 bar | 2 MPa |
| 25 bar | 2.5 MPa |
| 50 bar | 5 MPa |
| 75 bar | 7.5 MPa |
| 100 bar | 10 MPa |
| 250 bar | 25 MPa |
| 500 bar | 50 MPa |
| 1000 bar | 100 MPa |
Exact factor: 1 bar = 0.1 megapascals. Values rounded for display.