How do I convert Pounds per square inch (psi) to Torr?

1 psi equals 51.714933 torr using SI-based conversion and precise factors.

What is the formula to convert Pounds per square inch (psi) to Torr?

This is a linear unit conversion using a constant factor between units.

How can I share a direct psi to torr result?

Use the shareable URL: https://measurecalc.com/convert/psi-to-torr

Convert Pounds per square inch (psi) to Torr

Q: Is Pounds per square inch (psi) to Torr conversion exact?

Yes, it uses exact definitions or standardized constants (e.g., 1 in = 25.4 mm).

Category: Pressure

Value From To Precision

51.714933 torr

1 psi = 51.714933 torr

High-precision rounding: 6 decimals

How to convert pounds per square inch (psi) to torr

Pressure is force per unit area. Pascals (and kPa, hPa) are SI, while bar and psi are widely used in engineering and scuba. Conversions must respect absolute vs gauge references when comparing values.

This converter calculates Pounds per square inch (psi) to Torr values by using the correct conversion rule for the Pressure category. For linear units, standardized factors are used. For temperature, the calculator applies the proper formula with offsets.

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Quick conversion table

Handy values for Pounds per square inch (psi) to Torr. Click a value to open that exact result.

Pounds per square inch (psi)	Torr
1	51.714933
0.5	25.857466
2.5	129.287331
10	517.149326

Conversion formula

Linear unit conversions use standardized factors; many are exact by definition (e.g., 1 in = 25.4 mm, 1 ft = 0.3048 m).

Common mistakes

Comparing gauge pressure (psig) with absolute pressure (psia/hPa) without converting reference.
Mixing bar with atm (1 atm = 1.01325 bar).

Unit facts

Pounds per square inch (psi): Pounds per square inch (psi) is common for tires, hydraulics, and scuba tanks (1 psi ≈ 6,894.76 Pa).
Torr: Torr is ≈133.322368 Pa; named after Torricelli (barometer). Used in vacuum science.

About Pounds per square inch (psi)

Pounds per square inch (psi)

Imperial/US pressure unit. Common for tires, hydraulics, and compressors; often shown with gauge (psig) vs absolute (psia).

History: Industrial adoption in North America entrenched psi as a practical non-SI unit.

About Torr

Torr

≈133.322 Pa. Preferred in high-vacuum work alongside millitorr and microns.

History: Named after Torricelli; bridges historical millimeters of mercury (mmHg) with SI pascals.

Frequently asked questions

How many Torr are in one Pounds per square inch (psi)?

1 Pounds per square inch (psi) equals 51.714933 Torr.

Is Pounds per square inch (psi) to Torr conversion exact?

Many unit conversions are exact by definition, while others use standardized conversion constants.

What is the fastest way to convert Pounds per square inch (psi) to Torr?

Enter a value in Pounds per square inch (psi), choose Torr as the target unit, and the calculator will instantly return the result.

Convert Pounds per square inch (psi) to other units

psi → bar Bar
psi → pa Pascal (Pa)
psi → atm Standard atmosphere (atm)

Convert other units to Torr

bar → torr Bar
pa → torr Pascal (Pa)
atm → torr Standard atmosphere (atm)