Pressure Converter
Convert between pressure units including pascals, bar, PSI, atmospheres, and torr.
bar
All conversions from
Pascal
100000 Pa
Kilopascal
100 kPa
Megapascal
0.1 MPa
Gigapascal
0.0001 GPa
Millibar
1000 mbar
Atmosphere
0.9869232667 atm
Technical Atmosphere
1.019716213 at
Torr
750.0616827045 Torr
mmHg
750.0615758457 mmHg
PSI
14.503773773 psi
KSI
0.0145037738 ksi
Inches of Mercury
29.5299801647 inHg
Inches of Water
401.4630759756 inH₂O
Frequently Asked Questions
To convert PSI (pounds per square inch) to bar, multiply by 0.0689476. For example, 30 PSI = 30 × 0.0689476 = 2.07 bar. To convert bar to PSI, multiply by 14.5038.
Standard atmospheric pressure at sea level equals: 101,325 pascals (Pa), 1.01325 bar, 1 atmosphere (atm), 14.696 PSI, 760 mmHg (torr), or 29.92 inches of mercury. These values are useful for weather forecasting and altitude calculations.
To convert bar to PSI, multiply by 14.5038. For example, 2 bar = 2 × 14.5038 = 29.01 PSI. Tire pressures are often given in PSI (US) or bar (Europe), so this conversion is useful for travelers.
Absolute pressure is measured relative to a perfect vacuum (0 Pa). Gauge pressure is measured relative to atmospheric pressure. For example, a tire at 32 PSI gauge pressure is actually at about 46.7 PSI absolute (32 + 14.7 atmospheric).