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Pressure Converter
Pascal, bar, atm, psi, mmHg and millibar conversions.
Best for: Use it for tyres (psi/bar), weather (hPa/mmHg), diving, or engineering specs.
Input
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How it's calculated & sources
The Pressure Converter uses the standard, deterministic formula, so the same inputs always produce the same result. It runs entirely in your browser, so your inputs are never uploaded. Last reviewed June 2026.
Free & no sign-up · runs entirely in your browser. Results are estimates for general information, not professional advice — verify important decisions with a qualified expert. Last reviewed June 2026.
How it works
Pascal is the SI base (N/m²). 1 bar = 100 kPa = 14.5 psi.
Example
1 atm = 101.325 kPa = 14.7 psi = 760 mmHg.
Frequently asked questions
Is conversion real-time?+
Yes — values update instantly as you type in either field, with full bidirectional input.
Where does the pressure reference come from?+
All factors are SI-anchored using internationally accepted conversions.
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