6 min read
2026-01-28
SI unit. 1 Pa = 1 N/m². In practice, kilopascals (kPa) and megapascals (MPa) are used.
1 atm = 101,325 Pa - normal atmospheric pressure at sea level.
1 bar = 100,000 Pa ≈ 0.987 atm. Widely used in meteorology and industry.
1 atm = 760 mm Hg. Art. Used in medicine to measure blood pressure.
Imperial unit. 1 atm ≈ 14.696 psi. Used in the USA for tire pressure.
| Unit | In pascals |
|---|---|
| 1 atm | 101 325 |
| 1 bar | 100,000 |
| 1 mmHg Art. | 133.322 |
| 1 psi | 6,894.76 |
| 1 kgf/cm² | 98 066.5 |
Atmospheric pressure: 1 atm = 101.325 kPa
Tire pressure: 2.0–2.5 bar = 29–36 psi
Normal human blood pressure: 120/80 mm Hg. Art.
Water pressure at a depth of 10 m: ≈2 atm
See also: Energy Converter, Temperature Converter, Power Converter