Pressure
atmtoTorr
Convert standard atmospheres (atm) to torr (Torr).
Factor1 atm = 760 Torr
Converter
atm
Accepts numbers or expressions, e.g. 150 + 14.7
Result
Torr
Rendered to 6 significant figures.
Formula
Formula
Torr = atm × 760
Multiply any value in standard atmospheres by 760 to obtain the value in torr.
Worked example
Convert 1 atm to Torr.
- 01Start with 1 atm.
- 02Multiply by the conversion factor: 1 × 760 = 760 Torr.
Result1 atm = 760 Torr
Conversion table
| atm | Torr |
|---|---|
| 1 | 760 |
| 2 | 1520 |
| 5 | 3800 |
| 10 | 7600 |
| 20 | 15200 |
| 50 | 38000 |
| 100 | 76000 |
| 200 | 1.5200e+5 |
| 500 | 3.8000e+5 |
| 1000 | 7.6000e+5 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from atm to Torr?
1 atm equals 760 Torr. To convert, multiply the value in standard atmospheres by 760.
How do I convert 1 atm to Torr?
1 atm = 760 Torr. For any value, multiply by 760.
How do I convert Torr back to atm?
Divide by the same factor — or equivalently, multiply by 0.001315789. So 1 Torr = 0.00131579 atm.
When would I need to convert standard atmosphere to torr?
Pressure conversions between atm and Torr are common when working with mixed-vendor instrumentation, when piping codes use different units to process datasheets, or when converting field readings into SI for hydraulic calculations.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).