Pressure Converter
The Pressure Converter works between pascal, kilopascal, bar, atmosphere, psi and torr (mmHg) — the units used in engineering, weather, tires and scuba diving. Choose any two units and the result updates instantly.
What this means
Pressure is force spread over an area. Pascal is the metric unit; bar and atmosphere are common for weather and diving; psi is standard for tire pressure in the US. The converter applies the exact ratio between any two units.
How we calculate it
Formula
Result = Value × (factor of source unit) ÷ (factor of target unit), where 1 atm = 101,325 Pa exactly.Worked example
How many psi is 1 bar?
- 11 bar = 100,000 Pa
- 21 psi ≈ 6,894.76 Pa
- 31 bar ≈ 14.504 psi
Important assumptions
- 1 atmosphere is defined as exactly 101,325 Pa, and 1 psi as exactly 6,894.75729 Pa.
Frequently asked questions
What is normal atmospheric pressure?
Standard sea-level pressure is 1 atm = 101.325 kPa = 14.6959 psi = 760 torr.
How do I convert bar to psi for tires?
Multiply the bar value by 14.5038. For example, 2.4 bar ≈ 34.8 psi.
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