Pressure Converter
Fast, accurate pressure conversions, right in your browser.
The Pressure Converter converts pressure between common units — pascals, PSI, bar, atmospheres — instantly and accurately. Enter a value in one unit and see it converted to all supported units at once.
Whether you're working on an engineering calculation, a recipe, a science assignment or converting specs from an international source, this tool eliminates manual conversion-factor lookups and rounding errors.
How to Convert pressure
- Enter your value and select the starting unit
- Choose the unit you want to convert to
- The converted result appears instantly
Best Practices
- Double-check which unit variant is expected (e.g. US vs. metric) for your specific use case
- For engineering or scientific work, verify precision requirements against the tool's decimal output
- Bookmark this tool for quick repeated conversions
This tool is free to use with no signup required.
Frequently Asked Questions
What pressure units does this converter support?
Common units include pascals (Pa), bar, PSI (pounds per square inch), atmospheres (atm), and torr/mmHg.
How many PSI is one bar?
One bar equals approximately 14.5 PSI.
Is this useful for checking tire pressure specs?
Yes — vehicle manufacturers may list recommended tire pressure in PSI, bar, or kPa depending on the region, and this tool helps convert between them.
What is standard atmospheric pressure?
Standard atmospheric pressure at sea level is 1 atm, equal to 101,325 Pa, roughly 14.7 PSI, or 1.013 bar.
Is this tool free to use?
Yes, completely free with no signup, no limits and no software to install.
Is my data saved anywhere?
No — conversions run in your browser and the values you enter are not stored or sent to a server.
What is torr, and where is it used?
Torr (nearly identical to mmHg) is commonly used in vacuum measurement, scientific instrumentation, and some medical blood pressure contexts.
Is this useful for scuba diving or altitude calculations?
Yes — pressure unit conversions are relevant for understanding depth-related pressure changes in diving and altitude-related pressure changes in aviation and meteorology.
How do I convert kPa to PSI?
Multiply the kPa value by approximately 0.145 to get PSI.
Is this useful for weather/barometric pressure readings?
Yes — weather reports sometimes use different pressure units (hPa, inHg, mb) depending on the country, and this tool helps compare them.
