Atmospheres to PSI Converter
atm → psi · 🔬 Pressure
1 Atmospheres = 14.695943 PSI
How to convert Atmospheres to PSI
To convert Atmospheres to PSI, multiply the value in Atmospheres by 14.695943. For example, 5 atm = 73.479715 psi.
If you need to convert from Atmospheres to PSI, the key figure to remember is that one Atmospheres equals 14.695943 PSI. This page gives you a live calculator, a full reference table, and the underlying formula so you can convert atm to psi with complete confidence.
Pressure conversions are used in weather forecasting, engineering, diving, automotive maintenance, and industrial processes. Different fields favor different units, making conversion a regular necessity.
Understanding Atmospheres and PSI
The pascal is the SI unit, but it's small, so kilopascals and bars are more practical for everyday use. PSI (pounds per square inch) dominates in US engineering and tire pressures, while atmospheres provide an intuitive reference point — 1 atm is roughly the air pressure at sea level. Weather reports use hectopascals or millibars, which are numerically identical.
How accurate is this conversion?
Pressure conversions are based on fixed physical definitions. One standard atmosphere equals exactly 101,325 pascals, and 1 bar equals exactly 100,000 pascals, so all conversions here are precise.
All conversion factors on ClearUnits are based on internationally recognised standards (the International System of Units, SI, and official definitions). Factors are reviewed for accuracy and the calculator uses full-precision values, rounding only the displayed result.
Quick reference: common Atmospheres to PSI values
The most frequently searched conversions are 1 Atmospheres = 14.695943 PSI, 5 Atmospheres = 73.479715 PSI, 10 Atmospheres = 146.95943 PSI, and 100 Atmospheres = 1,469.594 PSI. The full table further down covers every common value, and the calculator handles any number you need in between.
Pro tip: For tire pressure, most vehicles specify PSI in the US and bar or kPa elsewhere. As a rule of thumb, 1 bar ≈ 14.5 PSI, so a typical 2.2 bar tire pressure is about 32 PSI.
Atmospheres to PSI — Conversion Table
| Atmospheres (atm) | PSI (psi) |
|---|---|
| 0.1 atm | 1.4695943 psi |
| 0.25 atm | 3.6739858 psi |
| 0.5 atm | 7.3479715 psi |
| 1 atm | 14.695943 psi |
| 2 atm | 29.391886 psi |
| 5 atm | 73.479715 psi |
| 10 atm | 146.95943 psi |
| 25 atm | 367.39858 psi |
| 50 atm | 734.79715 psi |
| 100 atm | 1,469.594 psi |
| 250 atm | 3,673.986 psi |
| 500 atm | 7,347.972 psi |
| 1000 atm | 14,695.943 psi |