PSI to Torr Converter
Convert PSI to Torr. Multiply by 51.7149—14.7 psi ≈ 760 Torr. For vacuum systems and lab gauges.
How to Convert Psi to Torr
Multiply psi by 51.7149.
Conversion Formula:
value * 51.7149Conversion Examples
Example: 14.7 psi to Torr
- 14.7 × 51.7149 ≈ 760 Torr
≈ 760 Torr
1 atmosphere.
Example: 1 psi to Torr
- 1 × 51.7149 ≈ 51.7 Torr
≈ 51.7 Torr
Per-psi factor.
Conversion Chart
| Psi | Torr |
|---|---|
| 1 | 51.71 |
| 2 | 103.43 |
| 5 | 258.57 |
| 10 | 517.15 |
| 14.7 | 760 |
| 20 | 1034.3 |
| 30 | 1551.4 |
| 50 | 2585.7 |
| 75 | 3878.6 |
| 100 | 5171.5 |
Conversion Formula
Since 760 Torr equals 14.7 psi (1 atmosphere), each psi corresponds to 760/14.7 ≈ 51.7149 Torr.
Quick Conversion Tip
psi × 52 ≈ Torr for a quick check; use 51.7149 for exact.
Unit Definitions
Pound per Square Inch (psi)
Imperial pressure unit.
1 psi ≈ 51.7149 Torr; 1 atm = 14.7 psi = 760 Torr.
Torr (Torr)
Vacuum-related unit (1/760 of an atmosphere).
Torr to psi divide by 51.7149; Torr to kPa divide by 7.50062; Torr to Pa multiply by 133.322.
Common Use Cases
- Vacuum ops (psi → Torr).
- Lab instrument specs.
- Gauge calibration.
- Engineering homework.
Understanding the Conversion
1 psi ≈ 51.7149 Torr. Multiply psi by 51.7149.
Example: 14.7 psi ≈ 760 Torr (1 atm). Use when Imperial gauge readings must match Torr vacuum specs.
Divide Torr by 51.7149 for psi.
Vacuum ops (psi → Torr). The table and FAQ on this page walk through the factor if you need it.
FAQs
Is 51.7149 exact?
It is the standard precise factor based on 1 atm = 14.7 psi = 760 Torr.
Why convert to Torr?
Torr is standard in vacuum and some lab specs; converting avoids misinterpretation when psi-only gauges are used.
How do I get back to psi?
Divide Torr by 51.7149 to return to psi.