Megapascals express material strength and high pressures: structural steel yields at about 250 MPa, concrete is graded by compressive strength such as 25 or 30 MPa, and hydraulic systems run at 10–35 MPa.
How to use the MPa Converter
- Pick the unit you are starting from in the From menu and type your value.
- Pick the unit you want in the To menu. The heading changes to match – for example “Megapascals to Kilopascals Converter”.
- The most common pressure units are shown below at the same time, so you can compare them at a glance.
- Type into any result to convert backwards, then use Copy results – the copied text starts with the heading for your chosen units.
Results update as you type. Everything is calculated in your browser.
How it works
Every pressure unit is defined by an exact factor relative to the pascal (the base unit). The calculator first turns the value you type into pascals, then turns that into the unit you picked in the “To” menu and into each of the common units below it. This two-step method means any unit can be converted to any other – 18 units are available in each menu – and you can type into any field, including a result, to work in the other direction. Changing a unit menu keeps the quantity the same and just re-expresses it, and the page heading and copied results follow your choice.
How to convert pressure units
- Choose the unit you have in the From menu and type the value, for example 1 MPa.
- Choose the unit you want in the To menu, for example kilopascals. The page heading changes to “Megapascals to Kilopascals Converter”.
- The calculator multiplies by the pascal factor of the “from” unit and divides by the factor of the “to” unit: 1 MPa × 1,000,000 ÷ 1,000 = 1,000 kPa.
1 megapascal in common units
| Unit | Value |
|---|---|
| Kilopascals (kPa) | 1,000 |
| Gigapascals (GPa) | 0.001 |
| Psi (psi) | 145.03774 |
| Ksi (ksi) | 0.14503774 |
| Bar (bar) | 10 |
| Standard atmospheres (atm) | 9.8692327 |
Megapascals conversion table
| Megapascals | kPa | GPa | psi | ksi |
|---|---|---|---|---|
| 0.1 | 100 | 0.0001 | 14.503774 | 0.014503774 |
| 1 | 1,000 | 0.001 | 145.03774 | 0.14503774 |
| 10 | 10,000 | 0.01 | 1,450.3774 | 1.4503774 |
| 25 | 25,000 | 0.025 | 3,625.9434 | 3.6259434 |
| 100 | 100,000 | 0.1 | 14,503.774 | 14.503774 |
| 250 | 250,000 | 0.25 | 36,259.434 | 36.259434 |
| 1,000 | 1,000,000 | 1 | 145,037.74 | 145.03774 |
What is a megapascal?
A megapascal is one million pascals, the same as one newton per square millimetre. Material strengths and hydraulic pressures are given in MPa.
What is a kilopascal?
A kilopascal is 1,000 Pa. Tyre pressures in Canada and Australia, weather data and boiler gauges often use kPa; standard air pressure is 101.325 kPa.
Common mistakes to avoid
Mixing gauge pressure (psig, barg) with absolute pressure (psia, bara), treating bar and atm as identical, and confusing kgf/cm² with bar.
Formula
1 MPa = 1,000 kPa1 MPa = 0.001 GPa1 MPa = 145.03774 psi1 MPa = 0.14503774 ksi1 MPa = 10 barWorked example
Inputs — From: 1 MPa.
Results — To = 1,000 kPa; Gigapascals = 0.001 GPa; Psi = 145.03773773 psi; Ksi = 0.14503774 ksi; Bar = 10 bar; Standard atmospheres = 9.86923267 atm.
Frequently asked questions
How many psi is 1 MPa?
About 145.04 psi.
How many bar in an MPa?
10 bar.
Is MPa the same as N/mm²?
Yes, 1 MPa = 1 N/mm².
How do I change the units?
Pick any unit in the From and To menus. The value is converted in place, and the heading changes to show your conversion, for example “Megapascals to Kilopascals Converter”.
Can I type into any field?
Yes. Every field is editable, so you can start from whichever unit you have.
How many units can I convert between?
18 pressure units, from the everyday to the specialised.
Which units are exact?
All factors here are exact by definition except astronomical and similar reference values, which use internationally agreed constants.
What formula does the MPa Converter use?
1 MPa = 1,000 kPa.