Pressure bar ↔ atm
1 atm = 1.01325 bar = 14.696 psi.
Result
atm
0.98692 atm
14.504 psi · 100.00 kPa.
- bar1.00000
- atm0.98692
- psi14.5038
- kPa100.00
Step-by-step
- 1 atm = 1.01325 bar (= 14.696 psi).
How to use this calculator
- Pick direction + enter value.
- Read all units.
About this calculator
1 atmosphere is the defined standard sea-level pressure: exactly 101,325 Pa = 1.01325 bar = 14.696 psi = 760 mmHg. Bar is metric round number (100 kPa). For most casual use, atm and bar are interchangeable (within 1.3%). Underwater pressure increases ~1 bar per 10 meters depth — so at 30m, total pressure is ~4 atm (1 atm air + 3 from water).
Frequently asked
atm = historical (sea-level standard). bar = metric (round 100 kPa). Both used; ~1.3% different.
Related calculators
Pressure psi ↔ bar
1 bar = 14.5038 psi = 100 kPa = 0.987 atm.
Wind Speed mph ↔ Knots
1 knot = 1.15078 mph = 1.852 km/h. Bidirectional, also m/s.
Temperature Rankine ↔ Fahrenheit
R = F + 459.67. Rankine is absolute (0 = absolute zero); Fahrenheit + 460.
Gravity on Other Planets
Surface gravity table for solar system bodies.
Time Seconds ↔ Minutes / Hours
Convert seconds to days/hours/minutes/seconds; auto-format hh:mm:ss.
Density g/cm³ ↔ kg/m³
1 g/cm³ = 1000 kg/m³. Water = 1 g/cm³ = 1000 kg/m³.