Convert Pounds per square inch to Megapascals
1 pound per square inch is 0.006895 MPa. One pound per square inch is exactly 0.00689475729317 megapascals.
One pound per square inch is 0.0068947573 megapascals. To convert pounds per square inch to megapascals, multiply by 0.0068947573; to go the other way, divide by 0.0068947573 or multiply by 145.03774. The factor is exact rather than rounded: it follows from NIST Special Publication 811. A pound-force spread over a square inch.
Factor checked against the defining standard · How we check
- Pounds per square inch × 0.0068947573
value * 0.006894757293170.007 MPa
1 pound per square inch in every pressure unit
| Unit | Value | Exact factor |
|---|---|---|
| pounds per square inch (as entered) | 1 psi | — |
| bars | 0.06894757293 bar | × 0.0689475729317 |
| pascals | 6,894.757293 Pa | × 6,894.75729317 |
| kilopascals | 6.894757293 kPa | × 6.89475729317 |
| megapascals | 0.006894757293 MPa | × 0.00689475729317 |
| atmospheres | 0.06804596391 atm | × 0.0680459639099 |
| torr | 51.71493257 Torr | × 51.7149325715 |
| inches of mercury | 2.036020461 inHg | × 2.03602046108 |
Factors are entered by hand from NIST Special Publication 811 rather than derived from a units library, so the ones that terminate are exact rather than rounded.
How do you convert pounds per square inch to megapascals?
- 1.Take the measurement in pounds per square inch.
- 2.Multiply by 0.0068947573 — that is how many megapascals fit in one pound per square inch.
- 3.To go back the other way, divide by 0.0068947573, or multiply by 145.03774.
Worked example: 25 pounds per square inch to megapascals
- Formula
- psi × 0.0068947573 = MPa
- Arithmetic
- 25 × 0.0068947573 = 0.172369 MPa
- Answer
- 25 psi = 0.172369 MPa
The factor is rounded for display; the figure above is computed from the full value.
Pounds per square inch to megapascals conversion table
| Pounds per square inch | Megapascals |
|---|---|
| 1 psi | 0.006895 MPa |
| 2 psi | 0.01379 MPa |
| 3 psi | 0.020684 MPa |
| 4 psi | 0.027579 MPa |
| 5 psi | 0.034474 MPa |
| 6 psi | 0.041369 MPa |
| 7 psi | 0.048263 MPa |
| 8 psi | 0.055158 MPa |
| 9 psi | 0.062053 MPa |
| 10 psi | 0.068948 MPa |
| 12 psi | 0.082737 MPa |
| 15 psi | 0.103421 MPa |
| 20 psi | 0.137895 MPa |
| 25 psi | 0.172369 MPa |
| 50 psi | 0.344738 MPa |
| 100 psi | 0.689476 MPa |
| 200 psi | 1.378951 MPa |
| 300 psi | 2.068427 MPa |
| 500 psi | 3.447379 MPa |
| 1000 psi | 6.894757 MPa |
| 2000 psi | 13.789515 MPa |
| 5000 psi | 34.473786 MPa |
| 10000 psi | 68.947573 MPa |
What is a pound per square inch?
A pound-force spread over a square inch. Exact, because both parts are: it is 4.4482216152605 newtons divided by an inch squared. Every US tyre gauge, air line and pressure washer is marked in it.
What is a megapascal?
A million pascals. Concrete strength and hydraulic ratings are specified here: 30 MPa concrete is about 4,350 psi.
How many megapascals are in a pound per square inch?
One pound per square inch is 0.0068947573 megapascals. Going the other way, one megapascal is 145.03774 pounds per square inch. Both figures come from the same defined relation rather than from a measurement, which is why they are the same today as they were in 1959.
Every pressure unit here
| Unit | Symbol | One of these is |
|---|---|---|
| Pounds per square inch | psi | 6894.7573 pascal |
| Bars | bar | 100000 pascal |
| Pascals | Pa | the base unit |
| Kilopascals | kPa | 1000 pascal |
| Megapascals | MPa | 1000000 pascal |
| Atmospheres | atm | 101325 pascal |
| Torr | Torr | 133.32237 pascal |
| Inches of mercury | inHg | 3386.389 pascal |
Questions people actually ask
- How many megapascals are in a pound per square inch?
- 0.0068947573. A million pascals. Concrete strength and hydraulic ratings are specified here: 30 MPa concrete is about 4,350 psi.
- How do I convert megapascals back to pounds per square inch?
- Divide by 0.0068947573, or multiply by 145.03774 — they are the same operation.
Other pressure conversions
Megapascals to pounds per square inch — the same conversion the other way.