Pressure Converter
Convert between Pascals, PSI, bar, atmospheres and more — instantly.
14.5038
PSI
1 atm = 101.325 kPa = 14.696 PSI
About Pressure Conversion
Pressure is force applied per unit area. The SI unit is the Pascal (Pa) — one newton per square meter. Because a Pascal is very small, everyday measurements use kilopascals (kPa), bar, PSI, or atmospheres.
How the Formula Works
Every unit converts through the Pascal: result = value × (from-unit in Pa) ÷ (to-unit in Pa). Example: 2 bar to PSI → 2 × 100,000 ÷ 6,894.757 = 29.0075 PSI.
Quick Reference Table
| Unit | Symbol | Pascals |
|---|---|---|
| Kilopascal | kPa | 1,000 |
| Bar | bar | 100,000 |
| Pound per square inch | PSI | 6,894.757 |
| Standard atmosphere | atm | 101,325 |
| Torr (mmHg) | torr | 133.322 |
Frequently Asked Questions
How many PSI are in 1 bar?One bar equals 14.5038 PSI.
How do I convert atm to kPa?Multiply atmospheres by 101.325. Example: 2 atm = 202.65 kPa.
What is the difference between PSI and PSIA?PSI is gauge pressure (relative to atmosphere); PSIA is absolute (from vacuum). PSIA = gauge PSI + 14.7.