Standard atmosphere to Bar Converter
1 standard atmosphere is exactly 1.01325 bars. Convert standard atmospheres (atm) to bars (bar) below: type a value and the result updates as you type.
atm to bar calculator
Result
Standard atmosphere to Bar conversion
1 atm = 1.01325 barone standard atmosphere in bars
1 bar ≈ 0.9869232667 atmone bar in standard atmospheres
Standard atmosphere (atm): Exactly 101 325 pascals.
Bar (bar): Exactly 100 000 pascals.
Source:NIST Special Publication 811 (2008), Appendix B.8
How to convert standard atmospheres to bars
To convert standard atmospheres to bars, multiply the number of standard atmospheres by 1.01325.
Formula
bar = atm × 1.01325
Examples
- 5 atm = 5 × 1.01325 = 5.06625 bar
- 25 atm = 25 × 1.01325 = 25.33125 bar
- 100 atm = 100 × 1.01325 = 101.325 bar
Standard atmosphere to Bar conversion table
| Standard atmosphere (atm) | Bar (bar) |
|---|---|
| 0.1 atm | 0.101325 bar |
| 0.5 atm | 0.506625 bar |
| 1 atm | 1.01325 bar |
| 2 atm | 2.0265 bar |
| 3 atm | 3.03975 bar |
| 5 atm | 5.06625 bar |
| 10 atm | 10.1325 bar |
| 20 atm | 20.265 bar |
| 25 atm | 25.33125 bar |
| 50 atm | 50.6625 bar |
| 100 atm | 101.325 bar |
| 250 atm | 253.3125 bar |
| 500 atm | 506.625 bar |
| 1000 atm | 1013.25 bar |
Values rounded to 10 significant digits where needed.
Frequently asked questions
- How many bars are in one standard atmosphere?
- One standard atmosphere is exactly 1.01325 bars.
- How do I convert bars to standard atmospheres?
- To convert bars to standard atmospheres, divide the number of bars by 1.01325. The formula is atm = bar ÷ 1.01325.
- Is this conversion exact?
- Yes. Both units have exact definitions and the factor 1.01325 is exact. Displayed results are only rounded when they have many decimal places.
- Which is larger, a standard atmosphere or a bar?
- A standard atmosphere is 1.01325 times larger than a bar. In other words, a bar is about 0.9869232667 of a standard atmosphere.