Megapascal Converter
Unit ConversionConvert megapascals to pascals, kPa, GPa, bar, psi, ksi, kgf/cm², atmospheres and mmHg. Type into any box and every other unit updates.
Megapascal
Metric
US and Engineering
Other Units
1 Megapascal = 1,000,000 Pascals ⟷ 1 Pascal = 0.000001 Megapascals
1 Megapascal = 1,000 Kilopascals ⟷ 1 Kilopascal = 0.001 Megapascals
1 Megapascal = 0.001 Gigapascals ⟷ 1 Gigapascal = 1,000 Megapascals
1 Megapascal = 10 Bar ⟷ 1 Bar = 0.1 Megapascals
1 Megapascal = 145.037738 PSI ⟷ 1 PSI = 0.00689476 Megapascals
1 Megapascal = 0.145038 KSI ⟷ 1 KSI = 6.894757 Megapascals
1 Megapascal = 10.197162 kgf/cm² ⟷ 1 kgf/cm² = 0.0980665 Megapascals
1 Megapascal = 9.869233 Atmospheres ⟷ 1 Atmosphere = 0.101325 Megapascals
1 Megapascal = 7,500.615758 mmHg ⟷ 1 mmHg = 0.000133322 Megapascals
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Unit Conversion calculators
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SponsoredThis megapascal converter shows a pressure or stress in megapascals next to pascals, kilopascals, gigapascals, bar, psi, ksi, kilograms-force per square centimeter, atmospheres and millimeters of mercury. Type into any box and the others update as you type.
A megapascal (MPa) is one million pascals. It suits high pressures and material strength: hydraulic systems, gas cylinders, concrete and steel. 1 MPa is exactly 10 bar and about 145.0377 psi, so a stress of 1 ksi is about 6.8948 MPa.
Negative values are accepted as gauge readings below the surrounding air, down to a full vacuum of about -0.101325 MPa. Below that, the other boxes clear. A stress can be negative in compression, but this page converts pressure readings, so it keeps to the vacuum limit.
What Is a Megapascal
A megapascal is 1,000,000 pascals, or 1,000 kilopascals. The symbol is MPa, with a capital M for mega. Do not confuse it with mPa, the millipascal, which is a billion times smaller. Bending stress, pipe pressure ratings and material strengths are often stated in MPa in metric countries and in psi or ksi in the US. The Bending Stress Calculator returns stress in psi, which this page turns into MPa.
MPa and N/mm²
1 MPa = 1 N/mm². A square meter holds one million square millimeters, so one newton per square millimeter is one million newtons per square meter, which is one million pascals. Engineering drawings and steel tables often write strengths in N/mm², and the number is the same in MPa.
Gigapascals and Young's Modulus
A gigapascal (GPa) is 1,000 MPa. Material stiffness, given as Young's modulus (stress divided by strain), runs to large numbers, so it is often written in GPa. Strain has no unit, so Young's modulus has the same units as pressure, and converting it works the same way: 1 GPa is about 145,038 psi, or about 145.0377 ksi.
To convert GPa to MPa, multiply by 1,000; to convert MPa to GPa, divide by 1,000. The gigapascal box above does both.
MPa Conversion Chart
Common megapascal values converted to psi, ksi, bar and kgf/cm². Values are rounded to four decimal places.
| Megapascals | PSI | KSI | Bar | kgf/cm² |
|---|---|---|---|---|
| 0.1 MPa | 14.5038 psi | 0.0145 ksi | 1 bar | 1.0197 kgf/cm² |
| 0.5 MPa | 72.5189 psi | 0.0725 ksi | 5 bar | 5.0986 kgf/cm² |
| 1 MPa | 145.0377 psi | 0.145 ksi | 10 bar | 10.1972 kgf/cm² |
| 2 MPa | 290.0755 psi | 0.2901 ksi | 20 bar | 20.3943 kgf/cm² |
| 5 MPa | 725.1887 psi | 0.7252 ksi | 50 bar | 50.9858 kgf/cm² |
| 10 MPa | 1,450.3774 psi | 1.4504 ksi | 100 bar | 101.9716 kgf/cm² |
| 20 MPa | 2,900.7548 psi | 2.9008 ksi | 200 bar | 203.9432 kgf/cm² |
| 25 MPa | 3,625.9434 psi | 3.6259 ksi | 250 bar | 254.9291 kgf/cm² |
| 30 MPa | 4,351.1321 psi | 4.3511 ksi | 300 bar | 305.9149 kgf/cm² |
| 50 MPa | 7,251.8869 psi | 7.2519 ksi | 500 bar | 509.8581 kgf/cm² |
| 100 MPa | 14,503.7738 psi | 14.5038 ksi | 1,000 bar | 1,019.7162 kgf/cm² |
| 200 MPa | 29,007.5475 psi | 29.0075 ksi | 2,000 bar | 2,039.4324 kgf/cm² |
Concrete strength is specified in MPa or psi, while the amount of concrete is a volume; the Concrete Cylinder Calculator works out how much a round column or post needs.
Megapascal and KSI Conversions
Single conversions that start from or end in this page's units, one page per pair.
- Megapascals to PSI Converter: 1 megapascal is about 145.037738 psi
- Megapascals to PSIG Converter: for gauge readings, 1 megapascal is about 145.037738 psi
- KSI to Megapascals Converter: 1 ksi is about 6.894757 megapascals
- KSI to PSI Converter: 1 ksi equals exactly 1,000 psi
Other Pressure Converters
Each converter below shows one pressure in many units at once, starting from a different unit.
- Pressure Unit Converter: one pressure in every common unit at once
- PSI Converter: psi to bar, kPa, atm, inHg, inches of water and more
- Kilopascal Converter: kilopascals to psi, bar, atm, hPa and more
- Pascal Converter: pascals to hPa, kPa, MPa, GPa, psi and more
- Atmosphere Converter: standard atmospheres to psi, kPa, torr, mmHg and more
- Barometric Pressure Converter: inches of mercury to hPa, millibars, mmHg and more
Frequently Asked Questions
How many psi is 1 MPa?
1 MPa is about 145.0377 psi. Multiply megapascals by about 145.04 to get psi.
How many bar is 1 MPa?
1 MPa is exactly 10 bar, since a bar is 100,000 pascals and a megapascal is 1,000,000 pascals.
How many psi is 1 N/mm²?
1 N/mm² is the same as 1 MPa, so it is about 145.0377 psi. Multiply N/mm² by about 145.04 to get psi.
How do I convert ksi to MPa?
Multiply ksi by about 6.894757. For example, 36 ksi is about 248.21 MPa.
What is the difference between MPa and mPa?
MPa is the megapascal, one million pascals. mPa is the millipascal, one thousandth of a pascal. The capital M and the lowercase m differ by a factor of one billion, so the case of the letter matters.
Can I enter a negative MPa value?
Yes, as a gauge reading below the surrounding air, down to a full vacuum of about -0.101325 MPa. Lower values clear the other boxes.
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