Unit Converters
Pressure Converter
Pressure: pressure Converter converts between pressure units — pascals, bar, psi and atmospheres — through a pascal base. Worked through below with real figures, and the calculator repeats the working on your own inputs — free, on-device, instant.
Want to convert a pressure measurement between units such as pascals, bar, psi and atmospheres? Pressure Converter does it from your value plus the source and target units and shows the converted pressure in the unit you choose clearly, with everything calculated in your browser.
One torr is 1/760 standard atmosphere (101325 Pa). mmHg and inHg use the conventional mercury-column definition and are not treated as exactly equal to torr.
About this calculator
It matters whenever the same quantity is expressed in two systems and a wrong factor silently breaks the answer. The governing relationship: Pressure Converter converts between pressure units — pascals, bar, psi and atmospheres — through a pascal base. See it on real numbers: Convert 1 atm to pascals: 101,325 Pa = 1.01325 bar = 760 mmHg. The calculator above applies the same steps to whatever you enter — computed locally, nothing sent anywhere.
How to use
- Enter the pressure value.
- Choose the From pressure unit.
- Choose the To pressure unit.
- Press Calculate to see the converted pressure.
Why use Pressure Converter
Fast
Calculations run in your browser. No round trip to a server.
Private
Your inputs never leave your device. Nothing is uploaded.
Free
No signup, no paywall, no ads-in-results, no watermarks.
Accurate
Uses standard conversion factors where applicable. Check critical engineering or measurement results before relying on them.
Mobile-ready
Optimised for phones, tablets, and desktops alike.
Transparent
Honest disclaimers wherever browser limits or regional rules apply.
Common uses
Use it for engineering and physics work
Use it when reading a spec sheet
Use it when a manual uses different units
Use it for cross-checking a calculation
Use it when comparing measurements
Use it for everyday unit reference
Technical notes
Pressure Converter converts between pressure units — pascals, bar, psi and atmospheres — through a pascal base.
Conversions use standard reference factors; for trade or engineering tolerances keep more decimal places than the display shows.
Results are rounded for display; the underlying calculation keeps full precision.
FAQ
Which pressure units are supported?
Pascals, kilopascals, megapascals, bar, atmospheres, psi, mmHg, torr, and inHg.
How many pascals are in a kilopascal?
1000, so 1000 Pa is 1 kPa.
Is mmHg the same as torr?
They are effectively equal for everyday use (1 mmHg is about 1 torr).
Does the Pressure Converter send my data to a server?
No. The Pressure Converter runs entirely in your browser, so nothing you enter is uploaded, stored, or shared.
Worked example
Convert 1 atm to pascals: 101,325 Pa = 1.01325 bar = 760 mmHg.