Pressure Converter
Convert between bar, PSI, pascal, atm and more.
🎈 Used in tire pressure, weather, and engineering. 1 atm = 101325 Pa = 14.7 psi.
What Is This Tool?
This tool converts between pressure units: pascals, bar, PSI, atmospheres, and torr. Pressure matters in everything from tire inflation to weather forecasting.
Common Conversions
- 1 atmosphere (atm) = 101,325 Pa = 1.01325 bar = 14.696 PSI = 760 torr
- 1 bar = 100,000 Pa = 14.5038 PSI
- 1 PSI = 6,894.76 Pa = 0.0689 bar
- 1 torr ≈ 133.322 Pa (roughly 1 mmHg)
Real-World Pressures
- Car tire: 30-35 PSI (~2-2.4 bar)
- Bicycle tire: 40-120 PSI depending on type
- Atmospheric at sea level: 1 atm = 1013 mbar
- Scuba tank (full): ~200 bar
- Jet cabin at altitude: ~0.75 atm
Why So Many Units
Different fields adopted different units historically. Meteorology uses millibars (hectopascals); tire pressure in the US uses PSI; medicine uses mmHg (torr) for blood pressure; engineering and science use pascals.
Frequently Asked Questions
What PSI should my car tires be?
Check the sticker inside the driver's door jamb — most cars are 30-35 PSI (2-2.4 bar). The number on the tire sidewall is the maximum, not the recommended pressure.
About the Pressure Converter
The Pressure Converter converts pressure converterfrom one unit to another using the exact internationally defined conversion factors. Type a value, choose your source and target units, and the converted result is shown instantly — no waiting, no page reload.
Manual conversion is error-prone because it means memorizing ratios (how many feet in a meter, how many pints in a liter). This tool removes that friction: the conversion factor is built in, and the math is done to full precision with no rounding until the final displayed number.
How to Use This Tool
- Enter the value you want to convert in the input field.
- Select the unit you are converting from.
- Select the unit you want to convert to.
- The converted value appears instantly. Adjust either unit to compare across the board.
- Copy the result if you need it elsewhere. Your input is never sent anywhere.
Why Use an Online Converter?
Browser-based tools like this one have a few real advantages over installed software or manual methods:
- No installation. It opens instantly in any browser, on any operating system.
- Private by default. Everything runs locally, so your data stays on your device.
- Always up to date.There's nothing to update — you always get the latest version when you load the page.
- Free and unlimited. Use it as often as you like, with no account and no caps.
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