Pressure Conversion Calculator
Convert pressure between bar, psi, kPa, MPa, Pa, atm, mbar, mmHg and inches of water.
Inputs
Results
- psi
- 14.5038 psi
- bar
- 1 bar
- kPa
- 100 kPa
- MPa
- 0.1 MPa
- atm
- 0.98692 atm
- mbar
- 1,000 mbar
- mmHg
- 750.06 mmHg
- inH₂O
- 401.46 inH₂O
Formula
Value in Pa = input × factor(from)
Result = Pa ÷ factor(to)
1 bar = 100 kPa = 14.5038 psi; 1 atm = 101.325 kPa
Assumptions & limits
- Gauge vs absolute is unchanged by conversion — add 1.01325 bar to convert gauge to absolute at sea level.
- mmHg and inH₂O use standard conditions (0 °C mercury, 4 °C water).
Worked example
1 bar = 100,000 Pa ÷ 6,894.76 = 14.5038 psi.