Pressure
psitoatm
Convert pounds-force per square inch (psi) to standard atmospheres (atm).
Factor1 psi = 0.06804596 atm
Converter
psi
Accepts numbers or expressions, e.g. 150 + 14.7
Result
atm
Rendered to 6 significant figures.
Formula
Formula
atm = psi × 0.06804596
Multiply any value in pounds-force per square inch by 0.06804596 to obtain the value in standard atmospheres.
Worked example
Convert 14.6959 psi to atm.
- 01Start with 14.6959 psi.
- 02Multiply by the conversion factor: 14.6959 × 0.06804596 = 0.999997 atm.
Result14.6959 psi = 0.999997 atm
Conversion table
| psi | atm |
|---|---|
| 1 | 0.068046 |
| 2 | 0.13609 |
| 5 | 0.34023 |
| 10 | 0.68046 |
| 20 | 1.3609 |
| 50 | 3.4023 |
| 100 | 6.8046 |
| 200 | 13.609 |
| 500 | 34.023 |
| 1000 | 68.046 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from psi to atm?
1 psi equals 0.06804596 atm. To convert, multiply the value in pounds-force per square inch by 0.06804596.
How do I convert 1 psi to atm?
1 psi = 0.068046 atm. For any value, multiply by 0.06804596.
How do I convert atm back to psi?
Divide by the same factor — or equivalently, multiply by 14.69595. So 1 atm = 14.6959 psi.
When would I need to convert pound-force per square inch to standard atmosphere?
Pressure conversions between psi and atm are common when working with mixed-vendor instrumentation, when piping codes use different units to process datasheets, or when converting field readings into SI for hydraulic calculations.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).