How many Torr are in one psi?
One psi is about 51.71493257 Torr.
Convert Pound per square inch (psi) to Torr (Torr) instantly.
Formula
value × 51.7149325715
| Sample | Converted |
|---|---|
| 1 psi | 51.714933 Torr |
| 5 psi | 258.574663 Torr |
| 10 psi | 517.149326 Torr |
| 100 psi | 5,171.493257 Torr |
| 1,000 psi | 51,714.932571 Torr |
Convert pounds per square inch to torr by multiplying the psi value by about 51.71493257. This is useful when customary pressure readings need to be compared with laboratory or vacuum pressure references.
Psi and Torr come from different pressure traditions: field gauges and mercury-column laboratory measurement.
This conversion is useful when a pressure value needs to move between service documents and lab references.
One standard atmosphere is about 14.6959 psi and exactly 760 Torr.
Use Torr when the target context is vacuum, chemistry, physics, or legacy mercury-column pressure notation.
Use psi when matching gauges, tires, hydraulic systems, or pneumatic equipment.
Keep pressure reference context attached because psi gauge pressure and absolute pressure convert differently in interpretation.
Psi is common on equipment gauges, while Torr appears in laboratory and vacuum pressure work.
Converting psi to Torr lets a value be compared across those contexts.
This can help when a document or teaching example uses both customary and lab-style pressure units.
A standard atmosphere is 760 Torr.
The same standard atmosphere is about 14.6959 psi.
That relationship gives a useful check for psi-to-Torr conversions.
Torr is most common in vacuum and laboratory settings.
It can represent higher pressures mathematically, but it may not be the most practical display unit for field equipment.
Use the target unit that matches the receiving document.
Definition: Pound per square inch is a pressure unit based on one pound-force applied over one square inch.
History/Origin: Psi became common in US customary pressure measurement and remains widely used on gauges and equipment labels.
Current use: psi is used for tires, compressors, hydraulics, pneumatics, pressure gauges, industrial equipment, and service documentation.
Definition: A torr is a pressure unit defined as 1/760 of a standard atmosphere.
History/Origin: Torr is named after Evangelista Torricelli and remains associated with mercury-column and vacuum pressure measurement.
Current use: Torr is used in vacuum systems, laboratories, physics, chemistry, pressure gauges, and low-pressure process documentation.
| Pound per square inch [psi] | Torr [Torr] |
|---|---|
| 0.01 psi | 0.517149 Torr |
| 0.1 psi | 5.171493 Torr |
| 1 psi | 51.714933 Torr |
| 2 psi | 103.429865 Torr |
| 5 psi | 258.574663 Torr |
| 10 psi | 517.149326 Torr |
| 20 psi | 1,034.298651 Torr |
| 50 psi | 2,585.746629 Torr |
| 100 psi | 5,171.493257 Torr |
1 psi = 51.714933 Torr
1 Torr = 0.019337 psi
Formula: value × 51.7149325715
Example: 15 psi = 775.723989 Torr
Precision note: Use 1 psi = 51.71493257 Torr. Preserve precision for lab comparisons, calibration, and low-pressure work.
One psi is about 51.71493257 Torr.
About 14.6959 psi is close to 760 Torr.
Not usually in field equipment, but the conversion is useful in lab, vacuum, and reference work.