Pressure Converter
This free online pressure conversion tool makes it easy to convert a pressure measurement into a wide range of commonly used scientific, industrial, and everyday pressure units. Whether you’re working with weather data, engineering calculations, tire pressure, or laboratory measurements, this calculator provides fast and reliable conversions.
With this pressure calculator, you can convert between Pascals, Hectopascals, Kilopascals, Megapascals, Bar, Millibar, Millimetres of Mercury, Inches of Mercury, Pounds per Square Inch, and Atmospheres. Simply enter a value into any of the input fields, and the calculator will instantly convert and display the equivalent pressure values across all other supported units, eliminating the need for manual calculations.
Enter Pressure Value
How to Use?
The pressure conversion calculator is a handy webtool to use to convert from one pressure to another.
- Enter a pressure value into one of the fields above.
- All the other fields will automatically update to their converted pressure.
- You can copy any pressure value to the clipboard, by clicking on the symbol.
- Any number value will be accepted including the 'e' exponent.
- If you would like to see another pressure added to the above, please contact us.
Pressure Unit Comparison Table
| Unit Name | Symbol | Description | Equals in Pascals |
|---|---|---|---|
| Pascal | Pa | Base unit of pressure in the SI system | 1 Pa |
| Hectopascal | hPa | Commonly used in meteorology | 100 Pa |
| Kilopascal | kPa | Used in engineering and tire pressure | 1,000 Pa |
| Megapascal | MPa | Used for high-pressure industrial applications | 1,000,000 Pa |
| Bar | bar | Metric unit used in engineering and weather | 100,000 Pa |
| Millibar | mbar | Common in atmospheric pressure measurements | 100 Pa |
| Millimetres of Mercury | mmHg | Used in medicine and science | 133.322 Pa |
| Inches of Mercury | inHg | Used in aviation and meteorology | 3,386.39 Pa |
| Pounds per Square Inch | psi | Common in mechanical and automotive use | 6,894.76 Pa |
| Atmosphere | atm | Standard reference pressure at sea level | 101,325 Pa |
Helpful Notes
- Pascals form the foundation of the SI pressure system.
- Hectopascals and millibars are numerically equivalent and widely used in weather reporting.
- mmHg is standard in medical blood pressure measurements.
- psi is commonly used in tire and hydraulic pressure.
- Atmospheres are often used as a reference point in physics and chemistry.