Free Pressure Converter
Tire gauges read PSI, weather maps use millibars, divers talk in bar, and blood pressure is mmHg. This free pressure converter speaks all of them, translating between nine pressure units instantly with a full comparison table.
Value in all pressure units
| Unit | Value |
|---|
How to Use the Pressure Converter
- Enter a value in the input box above.
- Choose the units to convert from and to — use the ⇄ button to swap them instantly.
- See the result immediately, plus the value converted into every other pressure unit in the table below.
- Copy the result with one click to use it anywhere.
Features
Nine pressure units: pascals, kilopascals, megapascals, bar, millibar, PSI, atmospheres, torr and mmHg. Live conversion, one-click swap, and every equivalent in one table.
Benefits & Use Cases
Drivers checking tire pressure abroad, divers planning gas mixes, HVAC technicians, and medical staff converting readings all get reliable numbers fast. Exact defined constants are used throughout.
Tips
1 bar ≈ 14.5 PSI — and conveniently, 1 bar is very close to 1 atmosphere (1.01325 bar). Standard tire pressures around 32 PSI equal about 2.2 bar.
Frequently Asked Questions
How do I convert bar to PSI?
Multiply bar by 14.5038. For example, 2.5 bar ≈ 36.26 PSI.
How many PSI are in one atmosphere?
14.6959 PSI per atmosphere (101.325 kPa).
What is the difference between torr and mmHg?
They differ by less than 2 parts per million — effectively identical for everyday use. This converter uses each exact definition.
How do I convert kPa to bar?
Divide by 100. For example, 250 kPa = 2.5 bar.
Related Tools
Force Converter
Convert newtons to pound-force, kilogram-force to newtons, dynes and more with NToolHub’s free force converter. Exact constants, instant results, no sign-up.
Open tool →Area Converter
Convert acres to square feet, hectares to acres, m² to ft² and more with NToolHub’s free area converter. Instant results, no sign-up needed.
Open tool →Energy Converter
Convert kWh to joules, calories to joules, BTU to kWh and more with NToolHub’s free energy converter. Instant results, no sign-up needed.
Open tool →Power Converter
Convert horsepower to watts, kilowatts to BTU/h, megawatts to hp with NToolHub’s free power converter. Instant results, no sign-up needed.
Open tool →Volume Converter
Convert liters to gallons, milliliters to cups, fluid ounces to liters with NToolHub’s free volume converter. US and imperial units, no sign-up.
Open tool →