Convert Torr to atmospheres
1 torr = 0.001315789 atmospheres · atm = Torr ÷ 760
When you need this conversion
This conversion goes from torr, equivalent to millimeters of mercury, used in vacuum work and medicine, to atmospheres, pressure relative to sea level, used in diving and chemistry. Both measure the same physical quantity, so the conversion is exact — the difference is which unit your source, tool, or region happens to use.
Torr to atmospheres conversion table
| Torr (Torr) | Atmospheres (atm) |
|---|---|
| 1 Torr | 0.001315789 atm |
| 2 Torr | 0.002631579 atm |
| 3 Torr | 0.003947368 atm |
| 5 Torr | 0.006578947 atm |
| 10 Torr | 0.013158 atm |
| 15 Torr | 0.019737 atm |
| 20 Torr | 0.026316 atm |
| 25 Torr | 0.032895 atm |
| 50 Torr | 0.065789 atm |
| 75 Torr | 0.098684 atm |
| 100 Torr | 0.131579 atm |
| 250 Torr | 0.328947 atm |
| 500 Torr | 0.657895 atm |
| 1,000 Torr | 1.3158 atm |
The formula
atm = Torr ÷ 760Because both units measure pressure, the conversion is a single multiplication by a fixed factor. That factor never changes, so the result is exact.
Convert the other way
Atmospheres to torr →Related pressure conversions
- Bars to atmospheres
- Atmospheres to bars
- Pascals to atmospheres
- Kilopascals to atmospheres
- Pounds per square inch to atmospheres
- Torr to pascals
- Torr to kilopascals
- Torr to bars
- Torr to pounds per square inch
- Pascals to kilopascals
- Pascals to bars
- Pascals to pounds per square inch
Frequently asked questions
- How many atmospheres are in a torr?
- There are 0.001315789 atmospheres in 1 torr. The formula is atm = Torr ÷ 760.
- How do you convert torr to atmospheres?
- Use the formula atm = Torr ÷ 760. For example, 10 torr equals 0.013158 atmospheres.
- Is the torr to atmospheres conversion exact?
- Yes. Torr and atmospheres are both units of pressure, related by an exact defined factor. Displayed results are rounded for readability.
- What is Torr short for?
- Torr is the standard symbol for torr (also written as mmHg). atm is the symbol for atmosphere.