Psi to Pascals
An instant psi-to-pascals converter, with the formula and a reference table below.
| Psi | Pascals |
|---|---|
| 1 psi | 6894.757293 Pa |
| 2 psi | 13789.514586 Pa |
| 3 psi | 20684.27188 Pa |
| 5 psi | 34473.786466 Pa |
| 10 psi | 68947.572932 Pa |
| 25 psi | 172368.932329 Pa |
| 50 psi | 344737.864658 Pa |
| 100 psi | 689475.729317 Pa |
How to use
- Enter a value in the Psi field.
- The Pascals figure appears immediately — no button to press.
- Typing in the Pascals field converts back to Psi the same way.
- Use the reference table for the values that come up most often.
Psi to Pascals formula
The factor from psi to pascals is 6894.75729.
Pa = psi × 6894.75729
Why this factor: the pound per square inch and the pascal are both defined against the pascal, so dividing one definition by the other gives 6894.75729 directly. Both definitions are set out in full below.
To go the other way, divide by 6894.75729 — or use the Pascals to Psi converter, which is the same calculation reversed.
Worked example
Start with 760 psi. Multiply by 6894.75729 to get 5240015.542808 Pa.
760 psi × 6894.75729 = 5240015.542808 Pa
The converter above does this for any value you type, in either direction.
What is a pound per square inch?
Pounds per square inch is the standard pressure unit in the United States.
Definition: One pound-force per square inch, which is about 6,894.757 pascals.
Where it is used: US tire pressure, compressed air and hydraulic systems, and plumbing water pressure.
What is a pascal?
The pascal is the SI unit of pressure — one newton of force spread over one square meter.
Definition: Defined as 1 N/m². Named after Blaise Pascal.
Where it is used: Scientific and engineering pressure calculations, and weather pressure in hectopascals.
Worth knowing: A single pascal is a very small pressure, which is why weather reports use hectopascals and engineering uses kilopascals.
Psi vs Pascals
The pound per square inch is a US customary unit while the pascal is an SI unit. That is why the factor between them is not a round number: the two systems were defined independently and only later tied together by exact agreement.
Frequently asked questions
How many pascals are in a pound per square inch?
One pound per square inch equals 6894.75729 pascals.
What is the formula to convert psi to pascals?
Multiply the number of psi by 6894.75729. To reverse it, divide by 6894.75729 instead.
How do I convert pascals back to psi?
Divide by 6894.75729, which is the same as multiplying by 0.000145037738.
How many pascals are in 10 psi?
10 psi works out to 68947.572932 Pa.
Is there anything to watch out for with pascals?
A single pascal is a very small pressure, which is why weather reports use hectopascals and engineering uses kilopascals.
How is the pound per square inch defined?
One pound-force per square inch, which is about 6,894.757 pascals.