Pressure
atmtopsf
Convert standard atmospheres (atm) to pounds-force per square foot (psf).
Factor1 atm = 2116.217 psf
Converter
atm
Accepts numbers or expressions, e.g. 150 + 14.7
Result
psf
Rendered to 6 significant figures.
Formula
Formula
psf = atm × 2116.217
Multiply any value in standard atmospheres by 2116.217 to obtain the value in pounds-force per square foot.
Worked example
Convert 1 atm to psf.
- 01Start with 1 atm.
- 02Multiply by the conversion factor: 1 × 2116.217 = 2116.22 psf.
Result1 atm = 2116.22 psf
Conversion table
| atm | psf |
|---|---|
| 1 | 2116.2 |
| 2 | 4232.4 |
| 5 | 10581 |
| 10 | 21162 |
| 20 | 42324 |
| 50 | 1.0581e+5 |
| 100 | 2.1162e+5 |
| 200 | 4.2324e+5 |
| 500 | 1.0581e+6 |
| 1000 | 2.1162e+6 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from atm to psf?
1 atm equals 2116.217 psf. To convert, multiply the value in standard atmospheres by 2116.217.
How do I convert 1 atm to psf?
1 atm = 2116.22 psf. For any value, multiply by 2116.217.
How do I convert psf back to atm?
Divide by the same factor — or equivalently, multiply by 0.0004725414. So 1 psf = 0.000472541 atm.
When would I need to convert standard atmosphere to pound-force per square foot?
Pressure conversions between atm and psf 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).