Standard Atmospheres to Pounds per Square Inch Converter
1 standard atmosphere ≈ 14.6959488 pounds per square inch
1 standard atmosphere equals 14.6959 pounds per square inch
How to convert standard atmospheres to pounds per square inch
Unit conversion preserves the pressure reference. Gauge pressure and absolute pressure are different readings; changing between them also needs the ambient pressure. Mercury and water-column units use the conventions stated in their unit notes.
psi = atm × 14.69594878One standard atmosphere is 14.69594878 pounds per square inch, so a single multiplication converts any value.
146.959 psi ≈ 10 × 14.69594878Standard atmospheres to pounds per square inch conversion table
Common values in standard atmospheres, converted to pounds per square inch.
| Standard atmospheres (atm) | Pounds per square inch (psi) |
|---|---|
| 1 | 14.695949 |
| 2 | 29.391898 |
| 3 | 44.087846 |
| 4 | 58.783795 |
| 5 | 73.479744 |
| 10 | 146.95949 |
| 20 | 293.91898 |
| 25 | 367.39872 |
| 50 | 734.79744 |
| 100 | 1,469.5949 |
| 250 | 3,673.9872 |
| 500 | 7,347.9744 |
| 1,000 | 14,695.949 |
About these units
standard atmosphereatm
Exactly 101,325 pascals, the defined standard sea-level pressure.
Reference: CGPM 1954.
pound per square inchpsi
One pound-force per square inch. The US standard for tyre and fluid pressure.
Sources and precision
Table results are rounded to 8 significant digits; formula constants may be rounded to 10. Worked example answers use 6 significant digits. The converter starts at 6 significant digits and lets you change display precision. Calculations use the stored factors without intermediate rounding. Exact unit definitions do not make an input measurement more precise; conventional and measured factors follow the assumptions stated here.