Pressure Converter
Result
0.001 Kilopascal
How these units are defined
The pascal is one newton per square metre. The bar is exactly 100,000 Pa, the standard atmosphere exactly 101,325 Pa, the torr exactly 1/760 atm, and psi is one pound-force per square inch (6,894.757 Pa).
| Unit | Equals |
|---|---|
| 1 Kilopascal | 1,000 Pascal |
| 1 Bar | 100,000 Pascal |
| 1 PSI | 6,894.757293 Pascal |
| 1 Atmosphere | 101,325 Pascal |
| 1 Torr | 133.3223684 Pascal |
Worked examples
- 14.7 PSI = 1.0135293 Bar
- 30 PSI = 2.0684272 Bar
- 32 PSI = 2.2063223 Bar
- 100 PSI = 6.8947573 Bar
Common mistakes
- Tyre and compressor gauges read gauge pressure — pressure above the surrounding air. Absolute pressure is about 1 atm (14.7 psi, 1.013 bar) higher.
- Weather maps use hectopascals (1 hPa = 100 Pa = 1 millibar); standard sea-level pressure is 1,013.25 hPa.
- Torr and mmHg differ by less than one part per million and are interchangeable for practical purposes.
Pressure conversions
Frequently asked questions
How do I convert PSI to bar?
To convert PSI to bar, multiply by 0.0689476. For example, 30 PSI = 2.07 bar. This is commonly needed for tire pressure conversions.
What is atmospheric pressure in different units?
Standard atmospheric pressure is 1 atm = 101,325 Pa = 14.696 PSI = 1.01325 bar = 760 mmHg.
What is a Pascal?
A Pascal (Pa) is the SI unit of pressure equal to one newton per square meter. It is commonly used in scientific and engineering applications.
Sources for these factors
- The International System of Units (SI Brochure), 9th edition — BIPM
- Guide for the Use of the International System of Units (SP 811), Appendix B: conversion factors — NIST
Last reviewed against these sources. An automated check recomputes every factor from its definition on each build. How we check accuracy