Table Of Contents
Pounds-force per square inch to atmospheres Conversion
1 pounds-force per square inch (psi) is equal to 0.06804596391 atmospheres (atm).
1 psi = 0.06804596391 atm
or
1 atm = 14.69594878 psi
Formula
To convert a pressure from pounds-force per square inch (psi) to atmospheres (atm), divide the pressure in pounds-force per square inch by 14.69594878
p(atm) = p(psi) / 14.69594878
Examples:
Convert 1 pounds-force per square inch to atmospheres:
p(atm) = 1psi / 14.69594878 = 0.06804596391 atm
Conversion table
| Pounds-force per square inch (psi) | Atmospheres (atm) |
|---|---|
| 1 psi | 0.068045964 atm |
| 2 psi | 0.136091928 atm |
| 3 psi | 0.204137892 atm |
| 5 psi | 0.34022982 atm |
| 10 psi | 0.680459639 atm |
| 20 psi | 1.360919278 atm |
| 25 psi | 1.701149098 atm |
| 50 psi | 3.402298195 atm |
| 100 psi | 6.804596391 atm |
| 250 psi | 17.011490977 atm |
| 500 psi | 34.022981955 atm |
| 1000 psi | 68.04596391 atm |
| Atmospheres (atm) | Pounds-force per square inch (psi) |
|---|---|
| 1 atm | 14.695948776 psi |
| 2 atm | 29.391897551 psi |
| 3 atm | 44.087846327 psi |
| 5 atm | 73.479743878 psi |
| 10 atm | 146.959487755 psi |
| 20 atm | 293.91897551 psi |
| 25 atm | 367.398719388 psi |
| 50 atm | 734.797438776 psi |
| 100 atm | 1469.594877551 psi |
| 250 atm | 3673.987193879 psi |
| 500 atm | 7347.974387757 psi |
| 1000 atm | 14695.948775514 psi |
Frequently asked questions
How do I convert pounds-force per square inch to atmospheres?
Divide the value in pounds-force per square inch by 14.69594878 to get the result in atmospheres. For example, 5 psi ÷ 14.69594878 = 0.34022982 atm.
How many atmospheres are in 1 pounds-force per square inch?
1 pounds-force per square inch (psi) is equal to 0.068045964 atmospheres (atm).
How do I convert atmospheres back to pounds-force per square inch?
Use the inverse operation: multiply the value in atmospheres by 14.69594878 to get the result in pounds-force per square inch.
How accurate is the pounds-force per square inch to atmospheres conversion?
The converter multiplies by the conversion factor 14.69594878 and rounds the result to 9 decimal places by default. You can increase or reduce the precision with the digits option on this page.
Sources
Conversion factors are based on internationally recognised standards:
- BIPM — The International System of Units (SI Brochure, 9th edition)
- ISO 80000-4:2019 — Quantities and units — Part 4: Mechanics
- NIST Guide to the SI, Appendix B.8: Factors for Units Listed Alphabetically (NIST SP 811, 2008 edition)
- Resolution 4 of the 10th CGPM (1954): Definition of the standard atmosphere
