atm to bar Converter - Standard Atmosphere to Bar
Standard Atmosphere (atm) to Bar (bar)
Direct answer
1 atm = 1.01325 bar
bar = atm × 1.01325
Converter
Conversion formula
bar = atm × 1.01325
atm = bar × 0.986923266716
Example: 10 atm = 10 × 1.01325 = 10.1325 bar.
Common conversion table
| atm | bar |
|---|---|
| 1 atm | 1.01325 bar |
| 2 atm | 2.0265 bar |
| 5 atm | 5.06625 bar |
| 10 atm | 10.1325 bar |
| 20 atm | 20.265 bar |
| 50 atm | 50.6625 bar |
| 100 atm | 101.325 bar |
| 1,000 atm | 1,013.25 bar |
Conversion derivation
Express both atm and bar in the same base unit Pa (pascal), then cancel the shared base unit.
- 1
Rewrite atm in the base unit
- 2
Rewrite bar in the base unit
- 3
Forward conversion
- 4
Reverse conversion
AI explanation for this conversion
This pre-generated explanation is schema-checked. Numeric results still come from the page formula and calculator.
Explanation: Standard Atmosphere to Bar Conversion
The conversion factor from standard atmosphere (atm) to bar is derived from their fixed definitions in the base SI unit of pressure, the pascal (Pa). One standard atmosphere is defined as exactly 101,325 Pa, while one bar is defined as exactly 100,000 Pa. The factor 1.01325 is the ratio of these two fixed values.
Definition
The standard atmosphere (atm) is a unit of pressure defined as exactly 101,325 pascals. The bar (bar) is a metric unit of pressure defined as exactly 100,000 pascals. Both are derived from the pascal, which is the SI unit of pressure (1 Pa = 1 N/m²).
Principle
Since both units are defined in terms of the pascal, converting between them involves expressing each unit in pascals and then forming a ratio. The forward conversion factor (1.01325 bar per atm) is the quotient of the pascal value of 1 atm divided by the pascal value of 1 bar.
Assumptions
- The definitions of the standard atmosphere (1 atm = 101,325 Pa) and the bar (1 bar = 100,000 Pa) are exact and fixed.
- The conversion uses these exact defined values without introducing measured or approximate data.
Cautions
- The conversion factor is exact only for the defined values; real-world measurements may involve uncertainties.
- The result should be rounded as needed for the precision required by your specific application.
- This explanation does not re-derive the conversion or introduce any new numeric results beyond the provided factor.
FAQ
How many bar are in 1 atm?
1 atm = 1.01325 bar.
How many bar are in 10 atm?
10 atm = 10.1325 bar.
How many bar are in 100 atm?
100 atm = 101.325 bar.
What is the formula to convert atm to bar?
Use bar = atm × 1.01325.
How many atm are in 1 bar?
1 bar = 0.986923266716 atm.
What should I check when converting atm to bar?
Use the conversion factor and round the result to the precision required by your calculation.