Convert torr to atm
torr to standard atmospheres. Enter a value to convert, or use the torr to atm chart further down the page.
1 torr equals 0.00131579 standard atmospheres. Going the other way, 1 standard atmosphere = 760 torr.
How to convert torr to atm
To convert torr to standard atmospheres, multiply the torr value by 0.001315789474. You can also divide by 760 to get the same answer.
atm = Torr × 0.001315789474
Worked example
Convert 15 Torr to standard atmospheres:
15 Torr = 0.0197368 atm
torr to atm conversion chart
Use this torr to atm table for quick reference without typing anything.
| torr (Torr) | standard atmospheres (atm) |
|---|---|
| 0.01 Torr | 0.0000131579 atm |
| 0.1 Torr | 0.000131579 atm |
| 1 Torr | 0.00131579 atm |
| 2 Torr | 0.00263158 atm |
| 3 Torr | 0.00394737 atm |
| 5 Torr | 0.00657895 atm |
| 10 Torr | 0.0131579 atm |
| 20 Torr | 0.0263158 atm |
| 50 Torr | 0.0657895 atm |
| 100 Torr | 0.131579 atm |
| 1,000 Torr | 1.31579 atm |
What is a torr?
One torr is exactly 1/760 of a standard atmosphere, which makes it almost — but not quite — identical to a millimeter of mercury. It is the working unit of vacuum systems.
What is a standard atmosphere?
The standard atmosphere is defined as exactly 101,325 pascals — the reference sea-level pressure.
Frequently asked questions
How many atm are in a torr?
1 torr equals 0.00131579 atm. Going the other way, 1 atm is 760 torr.
How do you convert torr to atm?
To convert torr to standard atmospheres, multiply the torr value by 0.001315789474. You can also divide by 760 to get the same answer.
What is 10 torr in atm?
10 torr equals 0.0131579 atm. The conversion chart on this page lists the other values people look up most often.
Related pressure conversions
Convert torr to other units
- atm to torr
- torr to psi
- torr to bar
- torr to pascals
- torr to kPa
- torr to mmHg
- torr to millibars
- torr to inHg
Convert other units to atm
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