---
title: "Pressure converter — every unit"
description: "Convert between every pressure unit: pascal, kilopascal, bar, standard atmosphere, pound per square inch and more. Tables, exact formulas and a calculator."
url: https://atoneplace.net/convert/pressure/
site: "At One Place"
---

# Pressure conversions

Every pressure unit on the site, and every conversion between them. Each page shows a full table, the exact formula and a live calculator.

## All pressure units

*Every pressure unit and its size relative to the base unit.*

| Unit | Symbol | In pascal |
| --- | --- | --- |
| pascal | Pa | 1 |
| kilopascal | kPa | 1,000 |
| bar | bar | 100,000 |
| millibar | mbar | 100 |
| standard atmosphere | atm | 101,325 |
| pound per square inch | psi | 6,894.757293 |
| torr | Torr | 133.3223684 |
| inch of mercury | inHg | 3,386.389 |

## Common conversions

- [Pascals to Kilopascals](https://atoneplace.net/convert/pascals-to-kilopascals/)
- [Pascals to Bars](https://atoneplace.net/convert/pascals-to-bar/)
- [Pascals to Standard atmospheres](https://atoneplace.net/convert/pascals-to-atmospheres/)
- [Pascals to Pounds per square inch](https://atoneplace.net/convert/pascals-to-psi/)
- [Pascals to Torrs](https://atoneplace.net/convert/pascals-to-torr/)
- [Kilopascals to Pascals](https://atoneplace.net/convert/kilopascals-to-pascals/)
- [Kilopascals to Bars](https://atoneplace.net/convert/kilopascals-to-bar/)
- [Kilopascals to Standard atmospheres](https://atoneplace.net/convert/kilopascals-to-atmospheres/)
- [Kilopascals to Pounds per square inch](https://atoneplace.net/convert/kilopascals-to-psi/)
- [Kilopascals to Torrs](https://atoneplace.net/convert/kilopascals-to-torr/)
- [Bars to Pascals](https://atoneplace.net/convert/bar-to-pascals/)
- [Bars to Kilopascals](https://atoneplace.net/convert/bar-to-kilopascals/)
- [Bars to Standard atmospheres](https://atoneplace.net/convert/bar-to-atmospheres/)
- [Bars to Pounds per square inch](https://atoneplace.net/convert/bar-to-psi/)
- [Bars to Torrs](https://atoneplace.net/convert/bar-to-torr/)
- [Standard atmospheres to Pascals](https://atoneplace.net/convert/atmospheres-to-pascals/)
- [Standard atmospheres to Kilopascals](https://atoneplace.net/convert/atmospheres-to-kilopascals/)
- [Standard atmospheres to Bars](https://atoneplace.net/convert/atmospheres-to-bar/)
- [Standard atmospheres to Pounds per square inch](https://atoneplace.net/convert/atmospheres-to-psi/)
- [Standard atmospheres to Torrs](https://atoneplace.net/convert/atmospheres-to-torr/)
- [Pounds per square inch to Pascals](https://atoneplace.net/convert/psi-to-pascals/)
- [Pounds per square inch to Kilopascals](https://atoneplace.net/convert/psi-to-kilopascals/)
- [Pounds per square inch to Bars](https://atoneplace.net/convert/psi-to-bar/)
- [Pounds per square inch to Standard atmospheres](https://atoneplace.net/convert/psi-to-atmospheres/)
- [Pounds per square inch to Torrs](https://atoneplace.net/convert/psi-to-torr/)
- [Torrs to Pascals](https://atoneplace.net/convert/torr-to-pascals/)
- [Torrs to Kilopascals](https://atoneplace.net/convert/torr-to-kilopascals/)
- [Torrs to Bars](https://atoneplace.net/convert/torr-to-bar/)
- [Torrs to Standard atmospheres](https://atoneplace.net/convert/torr-to-atmospheres/)
- [Torrs to Pounds per square inch](https://atoneplace.net/convert/torr-to-psi/)

## Sources

- Guide for the Use of the International System of Units (SP 811) — NIST (https://www.nist.gov/pml/special-publication-811) [Public domain (US Government)]
- The International System of Units (SI Brochure) — Bureau International des Poids et Mesures (https://www.bipm.org/en/publications/si-brochure)