Convert atmosphere to bar
Enter the value to convert from atmosphere to bar.
How to Convert Atmosphere to Bar
Converting atmosphere to bar is straightforward using our conversion calculator.
Conversion Formula
bar = atm × 1.01325Reverse conversion: Convert bar to atmosphere
Comparison: Atmosphere vs Bar
When to Use Each Unit
Atmosphere: Reference standard for scientific calculations, diving applications, and pressure comparisons.
Bar: Common in meteorology, engineering, diving, and industrial applications. Standard for European pressure measurements.
Common Conversion Values
- 1 atm = 101,325 Pa
- 1 atm = 1.01325 bar
- 1 atm ≈ 14.7 psi
- 1 atm = 760 mmHg
About Atmosphere
Definition: The atmosphere (symbol: atm) is a unit equal to 101,325 pascals, representing standard atmospheric pressure at sea level.
History: Defined in 1954 as standard reference pressure. Based on average atmospheric pressure at sea level at 15°C.
Current Use: Reference standard for scientific calculations, diving applications, and pressure comparisons.
Examples: Diving: pressure doubles every 10m, chemical reactions: STP conditions, gas laws: standard reference, altitude effects
About Bar
Definition: The bar is a metric unit of pressure equal to 100,000 pascals, approximately equal to atmospheric pressure.
History: Introduced in 1909 from Greek "baros" (weight). Widely adopted for its convenient magnitude relative to atmospheric pressure.
Current Use: Common in meteorology, engineering, diving, and industrial applications. Standard for European pressure measurements.
Examples: Weather systems: 0.98-1.05 bar, tire pressure: 2-3 bar, scuba tanks: 200-300 bar, steam systems: 1-20 bar