Megapascals to Millibar Converter
Convert Megapascals (MPa) to Millibar (mbar) instantly, or use the conversion table below to look up common values.
Megapascals to Millibar conversion table
| Megapascals (MPa) | Millibar (mbar) |
|---|---|
| 1 | 10,000 |
| 2 | 20,000 |
| 3 | 30,000 |
| 4 | 40,000 |
| 5 | 50,000 |
| 10 | 100,000 |
| 25 | 250,000 |
| 50 | 500,000 |
| 100 | 1,000,000 |
How to convert Megapascals to Millibar
1 MPa equals 10,000 mbar. Use the converter above for any value, or read the table for common conversions.
mbar = MPa × 10000 · MPa = mbar × 0.0001Multiply a megapascals figure by 10,000 to get millibar, or divide it by 1e-4 to go the other way.
Worked examples
- 1 MPa= 10,000 mbar
- 2 MPa= 20,000 mbar
- 5 MPa= 50,000 mbar
- 10 MPa= 100,000 mbar
- 50 MPa= 500,000 mbar
What these units are
Megapascals (MPa). A megapascal is 1,000 kilopascals, or one million pascals. It is used for concrete strength, where structural concrete is typically specified between 20 and 40 MPa.
Millibar (mbar). A millibar is 100 pascals, identical to the hectopascal used in weather reports. Average sea-level pressure is about 1,013 millibars.
Bar, atmosphere and psi are exact definitions. Gauges and weather stations round heavily, so treat the last digit as indicative rather than precise.
Checking a megapascals to millibar conversion
Pressure units are all defined against the pascal, so the conversion is a multiplication by a fixed number. What makes this dimension awkward is that the numbers sit within tens of per cent of each other, so a small slip looks plausible.
Three of the units are close together on purpose: one bar is 100,000 pascals, one atmosphere is 101,325, and weather reports use millibars and hectopascals, which are the same size. A reading that looks like a unit error is often a genuine difference between gauge pressure and absolute pressure instead.
Checking a pressure conversion means converting through pascals and comparing with a known reference, such as the fact that a bar and an atmosphere differ by about 1.3%. The error to watch for is quoting a pressure without saying whether it is measured above atmospheric pressure or from a vacuum.
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