Torr to Atmospheres (Torr to atm) Converter
1 torr (Torr) = 0.00131579 atmospheres (atm). To convert torr to atmospheres, multiply by 0.00131579: 25 Torr × 0.00131579 = 0.0328947 atm.
Quick facts
- 1 Torr = 0.00131579 atm
- 1 atm = 760 Torr
- Formula: atm = Torr × 0.00131579
- Quick estimate: multiply by about 0.0013
How to convert torr to atmospheres
- Take the value in torr.
- Multiply it by 0.00131579 (the number of atmospheres in one torr).
- Round the result to the precision you need.
Worked example: 25 Torr × 0.00131579 = 0.0328947 atm.
To convert atmospheres back to torr, multiply by 760, or divide by 0.00131579.
Source: NIST SP 811 (2008), Appendix B.
Torr to Atmospheres conversion table
| Torr [Torr] | Atmospheres [atm] |
|---|---|
| 0.01 Torr | 0.0000131579 atm |
| 0.1 Torr | 0.0001315789 atm |
| 1 Torr | 0.0013157895 atm |
| 2 Torr | 0.0026315789 atm |
| 3 Torr | 0.0039473684 atm |
| 5 Torr | 0.0065789474 atm |
| 10 Torr | 0.0131578947 atm |
| 20 Torr | 0.0263157895 atm |
| 50 Torr | 0.0657894737 atm |
| 100 Torr | 0.1315789474 atm |
| 1000 Torr | 1.3157894737 atm |
Torr to atm chart from 1 to 100
- 1 Torr 0.00131579 atm
- 2 Torr 0.00263158 atm
- 3 Torr 0.00394737 atm
- 4 Torr 0.00526316 atm
- 5 Torr 0.00657895 atm
- 6 Torr 0.00789474 atm
- 7 Torr 0.00921053 atm
- 8 Torr 0.0105263 atm
- 9 Torr 0.0118421 atm
- 10 Torr 0.0131579 atm
- 11 Torr 0.0144737 atm
- 12 Torr 0.0157895 atm
- 13 Torr 0.0171053 atm
- 14 Torr 0.0184211 atm
- 15 Torr 0.0197368 atm
- 16 Torr 0.0210526 atm
- 17 Torr 0.0223684 atm
- 18 Torr 0.0236842 atm
- 19 Torr 0.025 atm
- 20 Torr 0.0263158 atm
- 25 Torr 0.0328947 atm
- 30 Torr 0.0394737 atm
- 35 Torr 0.0460526 atm
- 40 Torr 0.0526316 atm
- 45 Torr 0.0592105 atm
- 50 Torr 0.0657895 atm
- 55 Torr 0.0723684 atm
- 60 Torr 0.0789474 atm
- 65 Torr 0.0855263 atm
- 70 Torr 0.0921053 atm
- 75 Torr 0.0986842 atm
- 80 Torr 0.105263 atm
- 85 Torr 0.111842 atm
- 90 Torr 0.118421 atm
- 95 Torr 0.125 atm
- 100 Torr 0.131579 atm
Atmospheres to Torr conversion table
| Atmospheres [atm] | Torr [Torr] |
|---|---|
| 0.01 atm | 7.6 Torr |
| 0.1 atm | 76 Torr |
| 1 atm | 760 Torr |
| 2 atm | 1520 Torr |
| 3 atm | 2280 Torr |
| 5 atm | 3800 Torr |
| 10 atm | 7600 Torr |
| 20 atm | 15200 Torr |
| 50 atm | 38000 Torr |
| 100 atm | 76000 Torr |
| 1000 atm | 760000 Torr |
Torr vs Atmospheres
| Torr | Atmosphere | |
|---|---|---|
| Symbol | Torr | atm |
| Equals | 1 Torr = 0.00131579 atm | 1 atm = 760 Torr |
What is a torr?
Approximately equal to one millimeter of mercury. Used in vacuum and laboratory pressure measurement.
What is an atmosphere?
Defined as standard atmospheric pressure at sea level. Used as a reference pressure in science and diving.
Frequently asked questions
How many atmospheres are in a torr?
There are 0.00131579 atmospheres in 1 torr (1 Torr = 0.0013157895 atm).
How many torr are in an atmosphere?
There are 760 torr in 1 atmosphere (1 atm = 760 Torr).
How do I convert torr to atmospheres?
Multiply the number of torr by 0.00131579. For example, 10 Torr × 0.00131579 = 0.0131579 atm. To convert back, multiply by 760.
What is 10 Torr in atmospheres?
10 Torr = 0.0131579 atm.
What is 100 Torr in atmospheres?
100 Torr = 0.131579 atm.
Is the conversion exact?
Yes. The factor comes from the official definitions of both units (NIST SP 811 (2008), Appendix B). Results are shown to up to 10 decimal places; round them to suit your purpose.
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