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Pressure Converter
Convert pressure between pascals, bars, atmospheres, psi and millimeters of mercury.
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How to Use This Converter
Type a value in either box and pick the units. The other box updates instantly. Use the swap button to reverse the direction.
- All 8 units are supported in both directions.
- Results update live as you type — no button to press.
- Values are formatted for readability while staying precise.
Frequently Asked Questions
How do I convert psi to bar?
Divide by 14.5038. 1 bar ≈ 14.5 psi.
What is mmHg?
Millimeters of mercury — used in blood pressure readings. 760 mmHg = 1 standard atmosphere.
What is a bar?
A metric unit of pressure equal to 100,000 Pa — close to one standard atmosphere.
How do I convert atmospheres to pascals?
Multiply by 101,325. 1 atm is the average sea-level air pressure.
Practical Example
Convert a typical car tire pressure of 2.2 bar to kilopascals and psi. Because 1 bar = 100,000 Pa, 2.2 × 100,000 = 220,000 Pa.
- 220,000 Pa ÷ 1,000 = 220 kPa
- 220,000 Pa ÷ 6,894.76 = 31.9 psi
- 220,000 Pa ÷ 101,325 = 2.17 atm
What Your Results Mean
- Pascals (Pa) — the SI unit of pressure; 1 Pa = 1 N per square meter.
- Bar — 100,000 Pa, close to one atmosphere; common for tires and divers.
- PSI — pounds per square inch; 1 psi = 6,894.76 Pa, common in US gauges.
- mmHg — millimeters of mercury; 760 mmHg = 1 atm, used in blood pressure.
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