Bar to Atmosphere Converter
1 bar = 0.986923 atm — 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 bar equals 0.986923 atmospheres. So to convert bars to atmospheres, multiply by 0.98692327.
How to convert bars to atmospheres
atmospheres = bars × 0.9869232667
The bar (100,000 Pa) sits conveniently close to one atmosphere, which made it the favorite of meteorologists and scuba divers.
The standard atmosphere (101,325 Pa) represents average sea-level air pressure — the natural reference for diving depth and chemistry.
Bar to Atmosphere conversion table
| Bar (bar) | Atmosphere (atm) |
|---|---|
| 0.01 bar | 0.009869 atm |
| 0.1 bar | 0.098692 atm |
| 0.25 bar | 0.246731 atm |
| 0.4 bar | 0.394769 atm |
| 0.75 bar | 0.740192 atm |
| 1.25 bar | 1.2337 atm |
| 1.75 bar | 1.7271 atm |
| 2.5 bar | 2.4673 atm |
| 3.5 bar | 3.4542 atm |
| 4.5 bar | 4.4412 atm |
| 6 bar | 5.9215 atm |
| 8 bar | 7.8954 atm |
| 10 bar | 9.8692 atm |
| 12 bar | 11.8431 atm |
| 14 bar | 13.8169 atm |
| 16 bar | 15.7908 atm |
| 18 bar | 17.7646 atm |
| 20 bar | 19.7385 atm |
| 24 bar | 23.6862 atm |
| 26 bar | 25.66 atm |
| 30 bar | 29.6077 atm |
| 35 bar | 34.5423 atm |
| 45 bar | 44.4115 atm |
| 55 bar | 54.2808 atm |
| 65 bar | 64.15 atm |
| 75 bar | 74.0192 atm |
| 85 bar | 83.8885 atm |
| 95 bar | 93.7577 atm |
| 110 bar | 108.5616 atm |
| 125 bar | 123.3654 atm |
| 175 bar | 172.7116 atm |
| 250 bar | 246.7308 atm |
| 350 bar | 345.4231 atm |
| 450 bar | 444.1155 atm |
| 600 bar | 592.154 atm |
| 750 bar | 740.1925 atm |
| 900 bar | 888.2309 atm |
| 1,500 bar | 1,480.38 atm |
| 2,500 bar | 2,467.31 atm |
| 10,000 bar | 9,869.23 atm |
Need the opposite direction? Use the Atmosphere to Bar converter, or read our complete guide to pressure conversions for every formula in one place.
Frequently asked questions
How many atmospheres are in one bar?
One bar equals 0.986923 atmospheres. Multiply any bar value by 0.98692327 to get atmospheres.
What is 10 bars in atmospheres?
10 bars equal 9.8692 atmospheres (10 × 0.986923).
Is the bar to atmosphere conversion exact?
The conversion factor used here (0.9869232667) 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.