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Pressure is force per unit area. Different fields use different units: tyres in PSI, weather in mbar or hPa, science in Pascals, diving in bar or atm. Converting between them is critical for safety in pneumatics and medicine.
Formule
1 atm = 101.325 kPa = 14.696 psi | 1 bar = 100 kPa ≈ 0.987 atm
- P
- Pressure (various)
- psi
- Pounds Per Square Inch (psi)
- kPa
- Kilopascals (kPa)
Guide étape par étape
- 11 atm = 101,325 Pa = 14.696 psi = 1.01325 bar = 760 mmHg
- 21 bar = 100,000 Pa ≈ 14.504 psi
- 31 psi = 6,894.76 Pa = 0.0689 bar = 51.71 mmHg
- 4Medical blood pressure: mmHg (normal ~120/80)
Exemples résolus
Entrée
Car tyre: 32 psi
Résultat
2.207 bar, 220.6 kPa, 1655 mmHg — above atmospheric
Entrée
1 atmosphere
Résultat
14.696 psi, 1.01325 bar, 101.325 kPa
Questions fréquentes
What is gauge pressure vs absolute pressure?
Absolute pressure includes atmospheric pressure (0 psi = 14.7 psi absolute). Gauge pressure reads 0 psi at sea level. Most devices show gauge pressure.
What does tire pressure 32 psi mean?
32 psi gauge = 46.7 psi absolute (32 + 14.7). This is about 320 kPa absolute or 218 kPa gauge.
What are typical pressure units?
PSI (US), bar (metric/Europe), kPa (SI), atm (physics). Know which unit is used before comparing values!
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