Convert Megapascal to Bar
1 megapascal = 10 bar (bar). For example, 10 megapascal = 100 bar and 100 megapascal = 1,000 bar. Type any value below to convert megapascal to bar both ways — it runs entirely in your browser.
Quick answer: Megapascal to Bar
1 Megapascal = 10 Bar (MPa → bar). To convert megapascal to bar, multiply by 10. To convert bar to megapascal, multiply by 0.1. The converter at the top does this instantly and both ways; the sections below give the formula, worked examples, a full conversion chart and answers to the most common megapascal-to-bar questions.
How to convert Megapascal to Bar
To convert megapascal to bar, multiply the number of megapascal by the conversion factor 10, because 1 MPa = 10 bar. The conversion is linear, so the same factor works for any value — whole numbers, decimals or fractions. For the reverse direction, 1 bar = 0.1 MPa, so you divide by 10 (or multiply by 0.1) to turn bar back into megapascal.
bar = MPa × 10 ·
MPa = bar × 0.1
- Write down the value you want to convert, in megapascal.
- Multiply it by 10.
- The result is the same area/length/quantity expressed in bar.
Megapascal to Bar — worked examples
Each row shows the exact arithmetic so you can follow the conversion step by step. For example, 5 megapascal is 50 bar because 5 MPa × 10 = 50 bar.
| Megapascal | Calculation | Bar |
|---|---|---|
| 1 MPa | 1 MPa × 10 = 10 bar | 10 bar |
| 2 MPa | 2 MPa × 10 = 20 bar | 20 bar |
| 3 MPa | 3 MPa × 10 = 30 bar | 30 bar |
| 5 MPa | 5 MPa × 10 = 50 bar | 50 bar |
| 7 MPa | 7 MPa × 10 = 70 bar | 70 bar |
| 10 MPa | 10 MPa × 10 = 100 bar | 100 bar |
| 12 MPa | 12 MPa × 10 = 120 bar | 120 bar |
| 15 MPa | 15 MPa × 10 = 150 bar | 150 bar |
| 20 MPa | 20 MPa × 10 = 200 bar | 200 bar |
| 25 MPa | 25 MPa × 10 = 250 bar | 250 bar |
| 50 MPa | 50 MPa × 10 = 500 bar | 500 bar |
| 100 MPa | 100 MPa × 10 = 1,000 bar | 1,000 bar |
Common Megapascal to Bar conversions
These are the megapascal-to-bar values people look up most often. Every figure is computed from the exact factor, so you can rely on them for quick reference:
- 1 megapascal = 10 bar
- 2 megapascal = 20 bar
- 2.5 megapascal = 25 bar
- 3 megapascal = 30 bar
- 4 megapascal = 40 bar
- 5 megapascal = 50 bar
- 6 megapascal = 60 bar
- 7 megapascal = 70 bar
- 8 megapascal = 80 bar
- 9 megapascal = 90 bar
- 10 megapascal = 100 bar
- 12 megapascal = 120 bar
- 15 megapascal = 150 bar
- 20 megapascal = 200 bar
- 25 megapascal = 250 bar
- 30 megapascal = 300 bar
- 50 megapascal = 500 bar
- 75 megapascal = 750 bar
- 100 megapascal = 1,000 bar
- 200 megapascal = 2,000 bar
- 500 megapascal = 5,000 bar
- 1000 megapascal = 10,000 bar
Megapascal to Bar conversion chart (both directions)
The chart below converts megapascal to bar and bar to megapascal side by side, so it works whichever way you need. 1 megapascal = 10 bar, and 1 bar = 0.1 megapascal.
| Megapascal → Bar | Bar → Megapascal |
|---|---|
| 0.25 MPa = 2.5 bar | 0.25 bar = 0.025 MPa |
| 0.5 MPa = 5 bar | 0.5 bar = 0.05 MPa |
| 1 MPa = 10 bar | 1 bar = 0.1 MPa |
| 2 MPa = 20 bar | 2 bar = 0.2 MPa |
| 3 MPa = 30 bar | 3 bar = 0.3 MPa |
| 4 MPa = 40 bar | 4 bar = 0.4 MPa |
| 5 MPa = 50 bar | 5 bar = 0.5 MPa |
| 6 MPa = 60 bar | 6 bar = 0.6 MPa |
| 7 MPa = 70 bar | 7 bar = 0.7 MPa |
| 8 MPa = 80 bar | 8 bar = 0.8 MPa |
| 9 MPa = 90 bar | 9 bar = 0.9 MPa |
| 10 MPa = 100 bar | 10 bar = 1 MPa |
| 12 MPa = 120 bar | 12 bar = 1.2 MPa |
| 15 MPa = 150 bar | 15 bar = 1.5 MPa |
| 20 MPa = 200 bar | 20 bar = 2 MPa |
| 25 MPa = 250 bar | 25 bar = 2.5 MPa |
| 30 MPa = 300 bar | 30 bar = 3 MPa |
| 40 MPa = 400 bar | 40 bar = 4 MPa |
| 50 MPa = 500 bar | 50 bar = 5 MPa |
| 75 MPa = 750 bar | 75 bar = 7.5 MPa |
| 100 MPa = 1,000 bar | 100 bar = 10 MPa |
| 150 MPa = 1,500 bar | 150 bar = 15 MPa |
| 200 MPa = 2,000 bar | 200 bar = 20 MPa |
| 250 MPa = 2,500 bar | 250 bar = 25 MPa |
| 500 MPa = 5,000 bar | 500 bar = 50 MPa |
| 1000 MPa = 10,000 bar | 1000 bar = 100 MPa |
Megapascal vs Bar: which is bigger?
A megapascal is the larger unit: one megapascal equals 10 bars. Put another way, you need 10 bars to make a single megapascal.
What is a Megapascal? History, origin and usage
The megapascal became the standard way to state material strength as structural engineering codes moved to SI. It replaced a patchwork of older units — kilograms-force per square centimetre in Europe and Asia, pounds per square inch in the United States and Britain — that made international standards hard to compare.
Megapascals are used wherever pressures or stresses are large: concrete and steel strength, hydraulic systems, injection moulding, and the pressure ratings of pipes and pressure vessels. Ordinary structural concrete is commonly specified somewhere around 20 to 40 MPa.
One megapascal is a million pascals, and also exactly 10 bar, which makes the two easy to swap in your head. One megapascal is also the same as one newton per square millimetre — a coincidence engineers use constantly, because it lets a stress in MPa be read straight off a force in newtons and an area in square millimetres.
What is a Bar? History, origin and usage
The bar takes its name from the Greek báros, meaning weight. It was deliberately defined as exactly 100,000 pascals, a round number chosen to sit very close to average air pressure at sea level, so that a pressure "in bars" reads roughly as "how many atmospheres". It is not an SI unit, but the International Bureau of Weights and Measures lists it among the units accepted for use alongside SI.
Bars are the everyday pressure unit across most of Europe and much of Asia: tyre inflators, bicycle pumps, espresso machines, diving cylinders, pressure washers and boiler gauges. An espresso machine is conventionally built around 9 bar of brewing pressure.
A bar is close to, but not the same as, an atmosphere — one atmosphere is 1.01325 bar exactly, a difference of about 1.3%. Diving uses this closeness deliberately: seawater adds roughly one bar of pressure for every ten metres of depth.
Convert 1 Megapascal to other units
It can help to see a megapascal next to the other units it is commonly compared with. One megapascal (MPa) is equal to:
| 1 Megapascal equals | Unit |
|---|---|
| 1,000,000 Pa | Pascal |
| 10,000 hPa | Hectopascal |
| 1,000 kPa | Kilopascal |
| 10,000 mbar | Millibar |
| 10 bar | Bar |
| 9.869233 atm | Standard atmosphere |
| 7,500.617 Torr | Torr |
| 7,500.616 mmHg | Millimetre of mercury |
| 295.2998 inHg | Inch of mercury |
| 101,971.6 mmH₂O | Millimetre of water |
| 4,014.631 inH₂O | Inch of water |
| 145.0377 psi | Pound per square inch |
| 10.19716 kgf/cm² | Kilogram-force per square centimetre |
Convert 1 Bar to other units
One bar (bar) is equal to:
| 1 Bar equals | Unit |
|---|---|
| 100,000 Pa | Pascal |
| 1,000 hPa | Hectopascal |
| 100 kPa | Kilopascal |
| 0.1 MPa | Megapascal |
| 1,000 mbar | Millibar |
| 0.9869233 atm | Standard atmosphere |
| 750.0617 Torr | Torr |
| 750.0616 mmHg | Millimetre of mercury |
| 29.52998 inHg | Inch of mercury |
| 10,197.16 mmH₂O | Millimetre of water |
| 401.4631 inH₂O | Inch of water |
| 14.50377 psi | Pound per square inch |
| 1.019716 kgf/cm² | Kilogram-force per square centimetre |
Tips for converting Megapascal to Bar
- To go from megapascal to bar, multiply by 10; to go back, divide by 10 (or multiply by 0.1).
- For a quick mental estimate, remember that 1 megapascal ≈ 10 bar, so 10 megapascal ≈ 100 bar.
- The converter above keeps full precision; the tables round for readability, so use the tool for exact figures.
- Both fields update live as you type — change either side to convert in that direction.
How to use this Megapascal to Bar converter
Type a number into the Megapascal field and the equivalent in Bar appears instantly — there is no “convert” button to press and nothing is sent to a server, so it works offline once the page has loaded and is safe for any data. You can also type into the Bar field to convert the other way (bar to megapascal). Use the swap control to flip the two units, and copy the result with a single click. Because the calculation runs in your browser with full floating-point precision, the converter is more exact than the rounded figures shown in the reference chart above — use the chart for quick look-ups and the tool for precise work.
Accuracy and method
Every figure on this page — the formula, the worked examples, the conversion chart and the “convert to other units” tables — is computed from a single verified conversion factor (1 MPa = 10 bar), never copied from a hand-typed lookup table that could drift. That factor is derived from each unit’s definition in terms of a common base unit, and an automated check re-verifies all of the site’s factors on every update, so the numbers here stay correct over time. This matters for megapascal-to-bar conversions because a small rounding error in a published table compounds quickly at larger quantities; computing from the exact factor avoids that.
Sources
- BIPM — The International System of Units (SI Brochure) — the defining document for the SI, published by the International Bureau of Weights and Measures. It fixes the base unit that this conversion resolves to, which is why the factor here can be exact rather than approximate.
- NIST — Definitions of the SI base units — the US National Institute of Standards and Technology reference for the SI base units, used here as an independent cross-check on the base-unit definition.
Pressure factors here come from fixed definitions, anchored to the pascal: a bar is exactly 100,000 Pa, one atmosphere is exactly 101,325 Pa, a torr is exactly a 760th of an atmosphere, and psi is built from the exact pound and the exact inch. Two of them — psi and the torr — work out to decimals that repeat forever, so where a number is shown rounded it is marked, not quietly trimmed.
Frequently asked questions
- How many bar are in 1 megapascal?
- 1 megapascal = 10 bar (bar). To convert any number of megapascal to bar, multiply by 10.
- How do I convert megapascal to bar?
- Multiply the number of megapascal by 10. For example, 10 megapascal = 10 × 10 = 100 bar, and 25 megapascal = 250 bar.
- How many megapascal are in 1 bar?
- 1 bar = 0.1 megapascal. So to convert bar back to megapascal, multiply by 0.1.
- What is the formula to convert megapascal to bar?
- bar = megapascal × 10. The reverse formula is megapascal = bar × 0.1.
- How much is 100 megapascal in bar?
- 100 megapascal = 1,000 bar. (And 1000 megapascal = 10,000 bar.)
- Which is bigger, a megapascal or a bar?
- A megapascal is larger: 1 megapascal = 10 bar.
- Is this megapascal to bar converter accurate?
- Yes — every value is computed from the exact 10 bar per MPa factor (not rounded look-up tables), and the factors are re-verified automatically on every update.
- Can I convert bar to megapascal too?
- Yes. The converter works both ways — enter a value in either field. 1 bar = 0.1 megapascal.