Conversion Formula
$$psi = atm \times 14.6959$$
Multiply the value in Standard Atmosphere by 14.6959 to get Pound per Square Inch.
atm to psi Conversion Table
| Standard Atmosphere (atm) | Pound per Square Inch (psi) |
|---|---|
| 0.1 | 1.46959 |
| 0.5 | 7.34797 |
| 1 | 14.6959 |
| 2 | 29.3919 |
| 5 | 73.4797 |
| 10 | 146.959 |
| 25 | 367.399 |
| 50 | 734.797 |
| 100 | 1,469.59 |
| 250 | 3,673.99 |
| 500 | 7,347.97 |
| 1,000 | 14,695.9 |
atm to psi in Engineering
Pressure conversions are essential across all engineering disciplines — from structural loads (PSI, ksi) to fluid systems (feet of water, mmHg) to atmospheric science (atm, mbar). Accurate pressure conversion is critical for piping design, HVAC, and geotechnical analysis.
Standard Atmosphere: Defined as exactly 101,325 Pa. Reference pressure for many engineering calculations and chemical processes.
Pound per Square Inch: Primary US customary pressure unit. Used extensively in mechanical, civil, and petroleum engineering in the United States.