Convert Pound per square inch to Pascal
1 pound per square inch = 6,894.757 pascal (Pa). For example, 10 pound per square inch = 68,947.57 pascal and 100 pound per square inch = 689,475.7 pascal. Type any value below to convert pound per square inch to pascal both ways β it runs entirely in your browser.
Quick answer: Pound per square inch to Pascal
1 Pound per square inch = 6,894.757 Pascal (psi β Pa). To convert pound per square inch to pascal, multiply by 6,894.757. To convert pascal to pound per square inch, multiply by 0.0001450377. The converter at the top does this instantly and both ways; the sections below give the formula, worked examples, a full conversion chart and answers to the most common pound per square inch-to-pascal questions.
How to convert Pound per square inch to Pascal
To convert pound per square inch to pascal, multiply the number of pound per square inch by the conversion factor 6,894.757, because 1 psi = 6,894.757 Pa. The conversion is linear, so the same factor works for any value β whole numbers, decimals or fractions. For the reverse direction, 1 Pa = 0.0001450377 psi, so you divide by 6,894.757 (or multiply by 0.0001450377) to turn pascal back into pound per square inch.
Pa = psi Γ 6,894.757 Β·
psi = Pa Γ 0.0001450377
- Write down the value you want to convert, in pound per square inch.
- Multiply it by 6,894.757.
- The result is the same area/length/quantity expressed in pascal.
Pound per square inch to Pascal β worked examples
Each row shows the exact arithmetic so you can follow the conversion step by step. For example, 5 pound per square inch is 34,473.79 pascal because 5 psi Γ 6,894.757 = 34,473.79 Pa.
| Pound per square inch | Calculation | Pascal |
|---|---|---|
| 1 psi | 1 psi Γ 6,894.757 = 6,894.757 Pa | 6,894.757 Pa |
| 2 psi | 2 psi Γ 6,894.757 = 13,789.51 Pa | 13,789.51 Pa |
| 3 psi | 3 psi Γ 6,894.757 = 20,684.27 Pa | 20,684.27 Pa |
| 5 psi | 5 psi Γ 6,894.757 = 34,473.79 Pa | 34,473.79 Pa |
| 7 psi | 7 psi Γ 6,894.757 = 48,263.3 Pa | 48,263.3 Pa |
| 10 psi | 10 psi Γ 6,894.757 = 68,947.57 Pa | 68,947.57 Pa |
| 12 psi | 12 psi Γ 6,894.757 = 82,737.09 Pa | 82,737.09 Pa |
| 15 psi | 15 psi Γ 6,894.757 = 103,421.4 Pa | 103,421.4 Pa |
| 20 psi | 20 psi Γ 6,894.757 = 137,895.1 Pa | 137,895.1 Pa |
| 25 psi | 25 psi Γ 6,894.757 = 172,368.9 Pa | 172,368.9 Pa |
| 50 psi | 50 psi Γ 6,894.757 = 344,737.9 Pa | 344,737.9 Pa |
| 100 psi | 100 psi Γ 6,894.757 = 689,475.7 Pa | 689,475.7 Pa |
Common Pound per square inch to Pascal conversions
These are the pound per square inch-to-pascal values people look up most often. Every figure is computed from the exact factor, so you can rely on them for quick reference:
- 1 pound per square inch = 6,894.757 pascal
- 2 pound per square inch = 13,789.51 pascal
- 2.5 pound per square inch = 17,236.89 pascal
- 3 pound per square inch = 20,684.27 pascal
- 4 pound per square inch = 27,579.03 pascal
- 5 pound per square inch = 34,473.79 pascal
- 6 pound per square inch = 41,368.54 pascal
- 7 pound per square inch = 48,263.3 pascal
- 8 pound per square inch = 55,158.06 pascal
- 9 pound per square inch = 62,052.82 pascal
- 10 pound per square inch = 68,947.57 pascal
- 12 pound per square inch = 82,737.09 pascal
- 15 pound per square inch = 103,421.4 pascal
- 20 pound per square inch = 137,895.1 pascal
- 25 pound per square inch = 172,368.9 pascal
- 30 pound per square inch = 206,842.7 pascal
- 50 pound per square inch = 344,737.9 pascal
- 75 pound per square inch = 517,106.8 pascal
- 100 pound per square inch = 689,475.7 pascal
- 200 pound per square inch = 1,378,951 pascal
- 500 pound per square inch = 3,447,379 pascal
- 1000 pound per square inch = 6,894,757 pascal
Pound per square inch to Pascal conversion chart (both directions)
The chart below converts pound per square inch to pascal and pascal to pound per square inch side by side, so it works whichever way you need. 1 pound per square inch = 6,894.757 pascal, and 1 pascal = 0.0001450377 pound per square inch.
| Pound per square inch β Pascal | Pascal β Pound per square inch |
|---|---|
| 0.25 psi = 1,723.689 Pa | 0.25 Pa = 0.00003625943 psi |
| 0.5 psi = 3,447.379 Pa | 0.5 Pa = 0.00007251887 psi |
| 1 psi = 6,894.757 Pa | 1 Pa = 0.0001450377 psi |
| 2 psi = 13,789.51 Pa | 2 Pa = 0.0002900755 psi |
| 3 psi = 20,684.27 Pa | 3 Pa = 0.0004351132 psi |
| 4 psi = 27,579.03 Pa | 4 Pa = 0.000580151 psi |
| 5 psi = 34,473.79 Pa | 5 Pa = 0.0007251887 psi |
| 6 psi = 41,368.54 Pa | 6 Pa = 0.0008702264 psi |
| 7 psi = 48,263.3 Pa | 7 Pa = 0.001015264 psi |
| 8 psi = 55,158.06 Pa | 8 Pa = 0.001160302 psi |
| 9 psi = 62,052.82 Pa | 9 Pa = 0.00130534 psi |
| 10 psi = 68,947.57 Pa | 10 Pa = 0.001450377 psi |
| 12 psi = 82,737.09 Pa | 12 Pa = 0.001740453 psi |
| 15 psi = 103,421.4 Pa | 15 Pa = 0.002175566 psi |
| 20 psi = 137,895.1 Pa | 20 Pa = 0.002900755 psi |
| 25 psi = 172,368.9 Pa | 25 Pa = 0.003625943 psi |
| 30 psi = 206,842.7 Pa | 30 Pa = 0.004351132 psi |
| 40 psi = 275,790.3 Pa | 40 Pa = 0.00580151 psi |
| 50 psi = 344,737.9 Pa | 50 Pa = 0.007251887 psi |
| 75 psi = 517,106.8 Pa | 75 Pa = 0.01087783 psi |
| 100 psi = 689,475.7 Pa | 100 Pa = 0.01450377 psi |
| 150 psi = 1,034,214 Pa | 150 Pa = 0.02175566 psi |
| 200 psi = 1,378,951 Pa | 200 Pa = 0.02900755 psi |
| 250 psi = 1,723,689 Pa | 250 Pa = 0.03625943 psi |
| 500 psi = 3,447,379 Pa | 500 Pa = 0.07251887 psi |
| 1000 psi = 6,894,757 Pa | 1000 Pa = 0.1450377 psi |
Pound per square inch vs Pascal: which is bigger?
A pound per square inch is the larger unit: one pound per square inch equals 6,894.757 pascals. Put another way, you need 6,894.757 pascals to make a single pound per square inch.
What is a Pound per square inch? History, origin and usage
Pounds per square inch grew directly out of the steam age: boiler safety valves were rated by how many pounds of weight it took to hold them shut over a known area, and the unit survived into every later technology that Britain and the United States industrialised. It never went through a formal international definition of its own β instead it became exact in 1959, when the yard-and-pound agreement fixed the pound and the inch exactly, and again through the fixing of standard gravity, which pins down what a "pound of force" means.
Psi is the standard pressure unit in the United States and remains widely understood in Britain, India and elsewhere: tyre pressures, air compressors, pressure washers, water mains, hydraulic lines and scuba tanks. Car tyres are commonly inflated to around 30 to 35 psi.
Psi is exactly defined but its value in pascals is a decimal that repeats forever, so any written figure is necessarily rounded somewhere. Gauges usually read gauge pressure β the amount above surrounding air β which is why a flat tyre reads zero rather than about 14.7.
What is a Pascal? History, origin and usage
The pascal is named after Blaise Pascal, who in 1648 had his brother-in-law carry a mercury barometer up the Puy de DΓ΄me in central France and watch the mercury column fall as he climbed. That experiment showed air has weight and that the pressure it exerts drops with height. The unit itself is much younger: the name was adopted by the General Conference on Weights and Measures in 1971, replacing the older habit of writing pressures as "newtons per square metre".
The pascal is the SI unit of pressure and the base every other unit on this page is defined against. On its own it is awkwardly small for daily life β a sheet of paper resting on a table presses down with only a few pascals β so real-world figures are almost always given with a prefix: hectopascals for weather, kilopascals for tyres and gas, megapascals for concrete and hydraulics.
One pascal is one newton spread over one square metre, which is about the pressure of a five-rupee coin lying flat on a table. Because pressure is force divided by area, the same push concentrated into a smaller area gives a much higher pressure β which is why a drawing pin goes into a wall and your thumb does not.
Convert 1 Pound per square inch to other units
It can help to see a pound per square inch next to the other units it is commonly compared with. One pound per square inch (psi) is equal to:
| 1 Pound per square inch equals | Unit |
|---|---|
| 6,894.757 Pa | Pascal |
| 68.94757 hPa | Hectopascal |
| 6.894757 kPa | Kilopascal |
| 0.006894757 MPa | Megapascal |
| 68.94757 mbar | Millibar |
| 0.06894757 bar | Bar |
| 0.06804596 atm | Standard atmosphere |
| 51.71493 Torr | Torr |
| 51.71493 mmHg | Millimetre of mercury |
| 2.036021 inHg | Inch of mercury |
| 703.0696 mmHβO | Millimetre of water |
| 27.6799 inHβO | Inch of water |
| 0.07030696 kgf/cmΒ² | Kilogram-force per square centimetre |
Convert 1 Pascal to other units
One pascal (Pa) is equal to:
| 1 Pascal equals | Unit |
|---|---|
| 0.01 hPa | Hectopascal |
| 0.001 kPa | Kilopascal |
| 0.000001 MPa | Megapascal |
| 0.01 mbar | Millibar |
| 0.00001 bar | Bar |
| 0.000009869233 atm | Standard atmosphere |
| 0.007500617 Torr | Torr |
| 0.007500616 mmHg | Millimetre of mercury |
| 0.0002952998 inHg | Inch of mercury |
| 0.1019716 mmHβO | Millimetre of water |
| 0.004014631 inHβO | Inch of water |
| 0.0001450377 psi | Pound per square inch |
| 0.00001019716 kgf/cmΒ² | Kilogram-force per square centimetre |
Tips for converting Pound per square inch to Pascal
- To go from pound per square inch to pascal, multiply by 6,894.757; to go back, divide by 6,894.757 (or multiply by 0.0001450377).
- For a quick mental estimate, remember that 1 pound per square inch β 6,894.757 pascal, so 10 pound per square inch β 68,947.57 pascal.
- The converter above keeps full precision; the tables round for readability, so use the tool for exact figures.
- Both fields update live as you type β change either side to convert in that direction.
How to use this Pound per square inch to Pascal converter
Type a number into the Pound per square inch field and the equivalent in Pascal appears instantly β there is no βconvertβ button to press and nothing is sent to a server, so it works offline once the page has loaded and is safe for any data. You can also type into the Pascal field to convert the other way (pascal to pound per square inch). Use the swap control to flip the two units, and copy the result with a single click. Because the calculation runs in your browser with full floating-point precision, the converter is more exact than the rounded figures shown in the reference chart above β use the chart for quick look-ups and the tool for precise work.
Accuracy and method
Every figure on this page β the formula, the worked examples, the conversion chart and the βconvert to other unitsβ tables β is computed from a single verified conversion factor (1 psi = 6,894.757 Pa), never copied from a hand-typed lookup table that could drift. That factor is derived from each unitβs definition in terms of a common base unit, and an automated check re-verifies all of the siteβs factors on every update, so the numbers here stay correct over time. This matters for pound per square inch-to-pascal conversions because a small rounding error in a published table compounds quickly at larger quantities; computing from the exact factor avoids that.
Sources
- NIST Special Publication 811 β Guide for the Use of the SI β publishes the exact metric equivalents of the customary pressure units. A psi is one pound of force over one square inch, and the 1959 international yard-and-pound agreement fixes the pound at exactly 0.453 592 37 kilogram and the inch at exactly 0.0254 metre, while standard gravity is fixed at exactly 9.806 65 m/sΒ² β so psi, inches of mercury and inches of water are defined exactly rather than measured.
- BIPM β The International System of Units (SI Brochure) β the defining document for the SI, published by the International Bureau of Weights and Measures. It fixes the base unit that this conversion resolves to, which is why the factor here can be exact rather than approximate.
Pressure factors here come from fixed definitions, anchored to the pascal: a bar is exactly 100,000 Pa, one atmosphere is exactly 101,325 Pa, a torr is exactly a 760th of an atmosphere, and psi is built from the exact pound and the exact inch. Two of them β psi and the torr β work out to decimals that repeat forever, so where a number is shown rounded it is marked, not quietly trimmed.
Frequently asked questions
- How many pascal are in 1 pound per square inch?
- 1 pound per square inch = 6,894.757 pascal (Pa). To convert any number of pound per square inch to pascal, multiply by 6,894.757.
- How do I convert pound per square inch to pascal?
- Multiply the number of pound per square inch by 6,894.757. For example, 10 pound per square inch = 10 Γ 6,894.757 = 68,947.57 pascal, and 25 pound per square inch = 172,368.9 pascal.
- How many pound per square inch are in 1 pascal?
- 1 pascal = 0.0001450377 pound per square inch. So to convert pascal back to pound per square inch, multiply by 0.0001450377.
- What is the formula to convert pound per square inch to pascal?
- pascal = pound per square inch Γ 6,894.757. The reverse formula is pound per square inch = pascal Γ 0.0001450377.
- How much is 100 pound per square inch in pascal?
- 100 pound per square inch = 689,475.7 pascal. (And 1000 pound per square inch = 6,894,757 pascal.)
- Which is bigger, a pound per square inch or a pascal?
- A pound per square inch is larger: 1 pound per square inch = 6,894.757 pascal.
- Is this pound per square inch to pascal converter accurate?
- Yes β every value is computed from the exact 6,894.757 Pa per psi factor (not rounded look-up tables), and the factors are re-verified automatically on every update.
- Can I convert pascal to pound per square inch too?
- Yes. The converter works both ways β enter a value in either field. 1 pascal = 0.0001450377 pound per square inch.