Utilities
Pressure Converter
Convert a pressure between pascals, kilopascals, bar, psi, atmospheres, and mercury units locally in your browser.
Convert pressure between pascals, hectopascals, kilopascals, bar, psi, atmospheres, and inches and millimeters of mercury. Zero is a valid pressure.
Conversions run locally in your browser; your pressure is not uploaded or stored.
Convert one pressure into the units you need.
Enter a non-negative pressure and choose its unit to see the equivalent pascals, hectopascals, kilopascals, bar, pounds per square inch, atmospheres, millimeters of mercury, and inches of mercury. Zero is valid. It runs locally in your browser, so your value is not uploaded or stored.
Frequently Asked Questions
Everything you need to know about this tool, how it works, and privacy.
Which pressure units can I convert?
Enter a pressure in pascals, hectopascals, kilopascals, bar, pounds per square inch, atmospheres, millimeters of mercury, or inches of mercury. The converter returns the equivalent value in all eight units using 1 bar = 100,000 Pa, 1 psi = 6894.757293168 Pa, 1 atm = 101,325 Pa, 1 mmHg = 133.322387415 Pa, and 1 inHg = 3386.389 Pa.
Can I convert zero or decimal pressures?
Yes. Zero is a valid pressure, and decimal values are accepted. Negative pressures are rejected because a gauge pressure below vacuum has no meaning in this converter. Results show up to six decimal places when needed.
What happens with very large pressures?
The converter shows an error when the entered pressure is too large to convert safely, instead of returning an unreliable rounded result.
Does my pressure leave my browser?
No. The conversion and copy action run locally in your browser. CodeASystem does not upload or store the value you enter.