Atmosphere to Bar Converter
1 atm = 1.01325 bar — convert instantly with formula and table.
Use the converter above for an immediate result — it recalculates on every keystroke and works offline once the page has loaded.
Quick answer: one atmosphere equals 1.0132 bars. So to convert atmospheres to bars, multiply by 1.01325.
How to convert atmospheres to bars
bars = atmospheres × 1.01325
The standard atmosphere (101,325 Pa) represents average sea-level air pressure — the natural reference for diving depth and chemistry.
The bar (100,000 Pa) sits conveniently close to one atmosphere, which made it the favorite of meteorologists and scuba divers.
Atmosphere to Bar conversion table
| Atmosphere (atm) | Bar (bar) |
|---|---|
| 0.01 atm | 0.010132 bar |
| 0.1 atm | 0.101325 bar |
| 0.25 atm | 0.253312 bar |
| 0.4 atm | 0.4053 bar |
| 0.75 atm | 0.759938 bar |
| 1.25 atm | 1.2666 bar |
| 1.75 atm | 1.7732 bar |
| 2.5 atm | 2.5331 bar |
| 3.5 atm | 3.5464 bar |
| 4.5 atm | 4.5596 bar |
| 6 atm | 6.0795 bar |
| 8 atm | 8.106 bar |
| 10 atm | 10.1325 bar |
| 12 atm | 12.159 bar |
| 14 atm | 14.1855 bar |
| 16 atm | 16.212 bar |
| 18 atm | 18.2385 bar |
| 20 atm | 20.265 bar |
| 24 atm | 24.318 bar |
| 26 atm | 26.3445 bar |
| 30 atm | 30.3975 bar |
| 35 atm | 35.4637 bar |
| 45 atm | 45.5962 bar |
| 55 atm | 55.7287 bar |
| 65 atm | 65.8612 bar |
| 75 atm | 75.9938 bar |
| 85 atm | 86.1262 bar |
| 95 atm | 96.2588 bar |
| 110 atm | 111.4575 bar |
| 125 atm | 126.6563 bar |
| 175 atm | 177.3187 bar |
| 250 atm | 253.3125 bar |
| 350 atm | 354.6375 bar |
| 450 atm | 455.9625 bar |
| 600 atm | 607.95 bar |
| 750 atm | 759.9375 bar |
| 900 atm | 911.925 bar |
| 1,500 atm | 1,519.88 bar |
| 2,500 atm | 2,533.13 bar |
| 10,000 atm | 10,132.5 bar |
Need the opposite direction? Use the Bar to Atmosphere converter, or read our complete guide to pressure conversions for every formula in one place.
Frequently asked questions
How many bars are in one atmosphere?
One atmosphere equals 1.0132 bars. Multiply any atmosphere value by 1.01325 to get bars.
What is 10 atmospheres in bars?
10 atmospheres equal 10.1325 bars (10 × 1.01325).
Is the atmosphere to bar conversion exact?
The conversion factor used here (1.01325) is based on the internationally agreed definitions of both units, so results are exact up to rounding of the final decimal places.
Is my data stored when I use this converter?
No. The conversion runs entirely in your browser with JavaScript — nothing you type is sent to a server, logged or stored.