How many PSI is 1 Torr?

1 Torr equals approximately 0.0193368 pounds per square inch (psi). A Torr is defined as exactly 1/760 of a standard atmosphere, and since 1 atm = 14.6959 psi, dividing gives 0.019337 psi per Torr.

How do I convert Torr to PSI manually?

Multiply the Torr value by 0.0193368. For example, 760 Torr × 0.0193368 = 14.696 psi. To convert PSI back to Torr, divide by 0.0193368 (or multiply by 51.715).

What is the difference between Torr and PSI?

Torr is a pressure unit equal to 1/760 of a standard atmosphere, named after Evangelista Torricelli. It is numerically identical to mmHg (millimeters of mercury) and is common in vacuum science and medicine. PSI (pounds per square inch) is the customary unit in the United States for engineering applications. 1 Torr = 0.019337 psi.

Is Torr the same as mmHg?

Torr and mmHg are nearly identical — 1 mmHg = 0.999999857 Torr. For most practical purposes, they are interchangeable. The Torr is defined by the standard atmosphere (101325 Pa / 760), while mmHg is defined by the density of mercury at 0 °C under standard gravity, giving a tiny difference.

What is 760 Torr in PSI?

760 Torr equals 14.6959 psi, which is standard atmospheric pressure (1 atm) at sea level. This is the most common reference point for the Torr unit, since 1 atm was historically defined as the pressure supporting a 760 mm column of mercury.

When would I use Torr versus PSI?

Torr is common in vacuum science, medicine (blood pressure), and laboratory settings worldwide. PSI is the standard in the United States for everyday engineering, tire pressure, and compressed air tools. Use this converter when specifications mix the two units.

Torr to PSI Converter

Name: Torr to PSI Converter
Availability: InStock
Author: Nham Vu

Enter a pressure in Torr and get the PSI equivalent instantly, with reverse PSI-to-Torr conversion and a reference table.

Converter

Pressure in Torr

Result in PSI

Reverse: PSI to Torr

Pressure in PSI

Result in Torr

Reference Table

Torr PSI

1 Torr 0.019337

10 Torr 0.19337

25 Torr 0.48342

50 Torr 0.96684

100 Torr 1.9337

200 Torr 3.8674

400 Torr 7.7348

760 Torr 14.696

1000 Torr 19.337

1520 Torr 29.392

2280 Torr 44.088

7600 Torr 146.96

Summary

Enter a pressure in Torr and get the PSI equivalent instantly, with reverse PSI-to-Torr conversion and a reference table.

How it works

Enter the pressure value in Torr in the top input field.
The PSI result appears instantly with no button press needed.
Use the reverse field to convert PSI back to Torr.
Click "Copy" next to any result to copy the value to your clipboard.
Check the reference table for common Torr-to-PSI values at a glance.

Use cases

Convert vacuum chamber pressure readings from Torr to PSI for US equipment specs.
Translate blood pressure measurements expressed in Torr (mmHg) to PSI.
Convert laboratory gas pressure from Torr to PSI when ordering US-standard regulators.
Check weather station pressure data given in Torr against PSI-based instruments.
Convert industrial vacuum pump specs from Torr to PSI for American suppliers.
Verify HVAC system pressures when switching between Torr and PSI gauges.
Convert altitude pressure readings from Torr to PSI in aerospace calculations.
Translate semiconductor fabrication chamber pressures from Torr to PSI.

Frequently Asked Questions

Last updated: 2026-07-23 · Reviewed by Nham Vu