Atmosphere to BarConverter
Instantly convert Atmosphere (atm) to Bar (bar). Free, accurate, and easy to use.
How to Convert Atmosphere to Bar
To convert Atmosphere (atm) to Bar (bar), multiply your value by 1.01325.
Example: 5 atm × 1.01325 = 5.06625 bar
What is a Atmosphere?
The standard atmosphere (atm) is defined exactly as 101,325 Pascals and represents average sea-level air pressure on Earth. It is the standard reference pressure in chemistry for gas laws (STP), and in diving to express depth pressure. Every 10 meters of seawater adds approximately 1 atm of pressure. The atmospheric pressure on Mars is only about 0.006 atm.
What is a Bar?
The bar equals exactly 100,000 Pascals (100 kPa), very close to standard atmospheric pressure (1.01325 bar). It is widely used in meteorology, pneumatics, hydraulics, and as the reference unit on European tire-pressure gauges. The word 'bar' comes from the Greek 'baros,' meaning weight. Deep-sea pressure increases by roughly 1 bar for every 10 meters of seawater depth.
Atmosphere to Bar Conversion Table
| Atmosphere (atm) | Bar (bar) |
|---|---|
| 0.001 atm | 0.00101325 bar |
| 0.01 atm | 0.0101325 bar |
| 0.1 atm | 0.101325 bar |
| 0.5 atm | 0.506625 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 |
| 200 atm | 202.65 bar |
| 500 atm | 506.625 bar |
| 1000 atm | 1013.25 bar |
| 5000 atm | 5066.25 bar |
| 10000 atm | 10132.5 bar |
| 50000 atm | 50662.5 bar |
| 100000 atm | 101325 bar |
| 1000000 atm | 1013250 bar |
| 1000000000 atm | 1.0133e+9 bar |
Frequently Asked Questions
How do I convert Atmosphere to Bar?
Multiply the Atmosphere value by 1.01325. Formula: bar = atm × 1.01325. Example: 10 atm = 10.1325 bar.
How many Bar are in one Atmosphere?
One Atmosphere (atm) equals 1.01325 Bar (bar).
How many Atmosphere are in one Bar?
One Bar (bar) equals 0.98692327 Atmosphere (atm).
What is the exact conversion factor from Atmosphere to Bar?
The conversion factor is 1.01325. Multiply any atm value by this number to get bar. For the reverse, multiply by 0.98692327.
How do I convert Bar back to Atmosphere?
Divide by 1.01325, or equivalently multiply by 0.98692327. Formula: atm = bar ÷ 1.01325.
Is the Atmosphere-to-Bar conversion internationally standardized?
Yes. Both units are defined by international standards (SI or the international yard/pound agreement), so the conversion factor 1.01325 is exact and universally agreed upon.