Convert Pounds per Square Inch to Torr
Instantly convert Pounds per Square Inch (psi) to Torr (torr) with our free online calculator.
Formula: psi to torr — multiply by 51.7151
Reference Table
| Pounds per Square Inch (psi) | Torr (torr) |
|---|---|
| 1 | 51.7151 |
| 5 | 258.575 |
| 10 | 517.151 |
| 25 | 1292.88 |
| 50 | 2585.75 |
| 100 | 5171.51 |
How to Convert Pounds per Square Inch to Torr
Formula
To convert Pounds per Square Inch (psi) to Torr (torr): multiply by 51.7151
Step-by-Step
- Start with your value in Pounds per Square Inch (psi).
- Multiply by 51.7151 to perform the conversion.
- The result is your value expressed in Torr (torr).
Conversion Factor
1 psi = 51.7151 torr
Reverse Factor
1 torr = 0.0193367 psi
Worked Example
Convert 25 Pounds per Square Inch to Torr: 25 psi = 1292.88 torr
About Pound per Square Inch (psi)
An imperial unit of pressure equal to one pound-force applied over one square inch (about 6,895 Pa). PSI is the dominant US pressure unit: tire inflation (32–35 psi for most cars), compressed air systems, hydraulic equipment, firearms ammunition chamber pressures, and municipal water supply. US engineering textbooks and specifications for valves, pumps, and pipes are still written in psi. Converting psi to kPa (×6.895) or psi to bar (÷14.504) are the most common US-to-metric pressure conversions.
About Torr (torr)
A unit of pressure equal to 1/760 of a standard atmosphere (about 133.322 Pa), numerically almost identical to one mmHg. Named after 17th-century physicist Evangelista Torricelli, who invented the mercury barometer. Torr is the primary unit in vacuum technology: semiconductor chamber pressure, mass spectrometry, cryogenic systems, and space environment testing. A "rough vacuum" is ~1 torr, high vacuum is 10⁻⁶ torr, ultrahigh vacuum is 10⁻⁹ torr or lower.
Quick Facts
- 1 Pound per Square Inch equals 51.7151 Torr
- 1 Torr equals 0.0193367 Pounds per Square Inch
- Pound per Square Inch is a unit of pressure
- Torr is a unit of pressure
- This conversion is commonly used in tire inflation, weather reporting, scuba diving, and engineering
- The Pound per Square Inch belongs to the imperial system
Common Pound per Square Inch to Torr Conversions
| Pounds per Square Inch (psi) | Torr (torr) |
|---|---|
| 0.1 | 5.17151 |
| 0.5 | 25.8575 |
| 1 | 51.7151 |
| 2 | 103.43 |
| 5 | 258.575 |
| 10 | 517.151 |
| 14.696 | 760.005 |
| 15 | 775.726 |
| 20 | 1034.3 |
| 25 | 1292.88 |
| 50 | 2585.75 |
| 100 | 5171.51 |
| 150 | 7757.26 |
| 200 | 10343 |
| 500 | 25857.5 |
| 1000 | 51715.1 |
Understanding Pounds per Square Inch
The Pound per Square Inch (symbol: psi) is a unit of pressure. An imperial unit of pressure equal to one pound-force applied over one square inch (about 6,895 Pa). PSI is the dominant US pressure unit: tire inflation (32–35 psi for most cars), compressed air systems, hydraulic equipment, firearms ammunition chamber pressures, and municipal water supply. US engineering textbooks and specifications for valves, pumps, and pipes are still written in psi. Converting psi to kPa (×6.895) or psi to bar (÷14.504) are the most common US-to-metric pressure conversions.
It belongs to the imperial measurement system.
Pounds per Square Inch are commonly used in tire inflation, weather reporting, scuba diving, and engineering.
Understanding Torr
The Torr (symbol: torr) is a unit of pressure. A unit of pressure equal to 1/760 of a standard atmosphere (about 133.322 Pa), numerically almost identical to one mmHg. Named after 17th-century physicist Evangelista Torricelli, who invented the mercury barometer. Torr is the primary unit in vacuum technology: semiconductor chamber pressure, mass spectrometry, cryogenic systems, and space environment testing. A "rough vacuum" is ~1 torr, high vacuum is 10⁻⁶ torr, ultrahigh vacuum is 10⁻⁹ torr or lower.
Torr are commonly used in tire inflation, weather reporting, scuba diving, and engineering.
Why Convert Pounds per Square Inch to Torr?
Engineers, mechanics, and scientists frequently need to convert pressure between Pounds per Square Inch and Torr when working with different measurement standards. Tire pressure, blood pressure readings, weather barometric measurements, and industrial process specifications may all use different pressure units depending on the region or discipline. Reliable conversion prevents equipment misuse and ensures safety.
Frequently Asked Questions
How do I convert Pounds per Square Inch to Torr?
An imperial unit of pressure equal to one pound-force applied over one square inch (about 6,895 Pa). To convert Pounds per Square Inch to Torr, multiply by 51.7151. For example, 25 psi equals 1292.88 torr.
How many Torr are in 1 Pound per Square Inch?
There are 51.7151 Torr in 1 Pound per Square Inch.
How many Pounds per Square Inch are in 1 Torr?
There are 0.0193367 Pounds per Square Inch in 1 Torr.
What is the formula for Pound per Square Inch to Torr conversion?
The formula is: multiply by 51.7151. This means 1 psi = 51.7151 torr.
Is a Pound per Square Inch bigger than a Torr?
No. One Pound per Square Inch is smaller than one Torr because 1 psi equals 51.7151 torr, which is greater than 1.
When do you need to convert between Pounds per Square Inch and Torr?
A unit of pressure equal to 1/760 of a standard atmosphere (about 133. Pound per Square Inch and Torr are both pressure units, so conversion comes up whenever one source of information uses one unit and another uses the other — a classic cross-reference challenge in engineering, trade, travel, and everyday life.