# Torr conversions

pressure conversions » torr conversionsThe online converter calculator on this page allows you to select the pressure/stress measurement unit you want to convert to starting from torr (Torr). To make a conversion starting from a unit of pressure other than torr, simply click on the "Reset" button.

## What is torr?

### Definition:

The torr is a non-SI unit of pressure equal to 133.3224 pascals (1 Torr = 133.3224 Pa), the SI derived unit of pressure. It is also equal to 1.333224 hectopascals (hPa), or 0.1333224 kilopascals (kPa), or about 0.00131578947 atmospheres (atm), or 0.00133322368 bars (bar), or 1.0 millimeter of mercury at 0 °C (mmHg), or 0.53524 inches of water at 4 °C (inH2O), or 0.0193368 pounds per square inch (psi) or 2.78449556 pounds per square foot (psf).

The torr unit is named after the Italian physicist and mathematician Evangelista Torricelli who lived between 1608 and 1647. The torr is used in engineering and physics.

*Note:*

The SI is an abbreviation for the International System of Units.

### Symbol:

Torr

### Plural:

torr

Below you can find a comprehensive list with conversions from torr to other (metric, imperial, or customary) pressure and stress measurement units.