Pressure Conversion
Pressure measurement units
Required Parameters
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Quick Answer
1 atm = 101.325 kPa = 14.696 psi = 1.01325 bar = 760 mmHg. Use gauge pressure (PSIG) for most industrial applications and absolute pressure (PSIA) for vacuum and thermodynamic calculations.
Calculateur de Conversion de Pression
Convertissez entre unites de pression: Pascal, bar, psi, atm, mmHg et Torr.
Design Notes
Pressure sensing in electronics uses MEMS sensors calibrated in Pa or PSI. Common full-scale ranges: 100 Pa (HVAC), 100 kPa (barometric), 700 kPa (tire/pneumatic), 35 MPa (hydraulic). Always specify gauge vs absolute.
Common Mistakes
- 1
Confusing gauge pressure (relative to atmosphere) with absolute pressure (relative to vacuum).
- 2
Using 1 bar = 1 atm as an approximation when precision matters (1 bar = 100 kPa, 1 atm = 101.325 kPa).
- 3
Forgetting to specify PSIG vs PSIA — the 14.7 psi difference matters for calculations.
Knowledge Base
Comment convertir des bars en PSI ?
1 bar = 14,5038 PSI. 1 atm = 1,01325 bar = 14,696 PSI. En France, la pression est exprimée en bars (gonflage pneus : 2,2 bar), aux USA en PSI (32 PSI ≈ 2,2 bar).