Pressure Converter
Type a pressure once and see it in pascals, bar, psi, atmospheres, millimetres and inches of mercury and torr. Handy for tyres, weather and gas cylinders.
- Pascals
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- Kilopascals
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- Megapascals
- –
- Bar
- –
- Millibar (hPa)
- –
- Standard atmospheres
- –
- Pounds per square inch
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- Millimetres of mercury
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- Inches of mercury
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- Torr
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How it is calculated
- Everything is converted through pascals (Pa).
- 1 bar = 100,000 Pa; 1 atm = 101,325 Pa exactly; 1 torr = 101,325 ÷ 760 Pa
- 1 psi = 6,894.757 Pa (from 1 lb = 0.45359237 kg, g = 9.80665 m/s², 1 in = 0.0254 m)
- 1 mmHg (conventional) = 133.322 Pa; 1 inHg = 25.4 mmHg
Worked example
| You enter | |
|---|---|
| Value | 1 |
| From | Pounds per square inch (psi) |
| You get | |
| Pascals | 6,894.757293 Pa |
| Kilopascals | 6.894757 kPa |
| Megapascals | 0.006895 MPa |
| Bar | 0.068948 bar |
| Millibar (hPa) | 68.947573 mbar |
| Standard atmospheres | 0.068046 atm |
| Pounds per square inch | 1 psi |
| Millimetres of mercury | 51.714925 mmHg |
| Inches of mercury | 2.036021 inHg |
| Torr | 51.714933 Torr |
1 psi equals 6,894.757293 Pa, 6.894757 kPa, 0.006895 MPa.
Sources and checks
Last checked: 12 October 2026. This calculator passes 5 automatic tests before every release.
Your numbers never leave your device: the calculation runs in your browser and nothing you type is sent or stored.
Conversions use exact legal definitions where they exist. Results are rounded for display. Results are estimates for information only and are not financial, tax or legal advice. Check important figures with a qualified professional before you act on them.