Free Pressure Converter
Convert between pascals, kilopascals, bar, psi and atmospheres.
Enter a pressure and select units. It uses exact definitions such as 1 bar = 100,000 Pa and 1 standard atmosphere = 101,325 Pa.
How to use the Pressure Converter
- Enter your values, choosing the units you are working in.
- Read the result and the supporting numbers shown beneath it.
- Check the result against a second method or a reference table before you rely on it.
About the Pressure Converter
Convert between pascals, kilopascals, bar, psi and atmospheres.
Quick, reliable engineering arithmetic saves time on site and in the workshop. These tools show their working so you can check the result.
Getting started with the Pressure Converter
Using the pressure converter takes a minute or two. Your entries are saved in this browser, so you can come back later and carry on.
Tips for better results
Check whether a gauge shows gauge pressure or absolute pressure, because the conversion only changes units, not that reference.
Keep units consistent from start to finish.
These tools are for estimates. Safety critical designs need a qualified engineer.
Privacy and where your data goes
Everything you type into the pressure converter stays on your own device. Zapxa does not receive your numbers or documents. If you clear your browser data, your saved entries will be removed, so download a PDF of anything you want to keep.
Frequently asked questions
How many pascals are in an atmosphere?
Exactly 101,325 pascals for one standard atmosphere.
How many kPa is 1 bar?
100 kilopascals.
Is the pressure converter free?
Yes. It is free to use with no signup, no watermark and no usage limits.
Is my data private?
Yes. Your inputs are processed in your browser and saved only in its local storage. They are not uploaded to our servers.
Does it work on mobile?
Yes. Zapxa works on phones, tablets and desktops. Use the print button or download a PDF to keep a copy.
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