Pounds per Square Inch to Atmospheres (psi to atm) Converter
1 pounds per square inch (psi) = 0.068046 atmospheres (atm). To convert pounds per square inch to atmospheres, multiply by 0.068046: 32 psi × 0.068046 = 2.17747 atm.
Quick facts
- 1 psi = 0.068046 atm
- 1 atm = 14.6959 psi
- Formula: atm = psi × 0.068046
- Quick estimate: multiply by about 0.068
How to convert pounds per square inch to atmospheres
- Take the value in pounds per square inch.
- Multiply it by 0.068046 (the number of atmospheres in one pounds per square inch).
- Round the result to the precision you need.
Worked example (car tyre pressure): 32 psi × 0.068046 = 2.17747 atm.
To convert atmospheres back to pounds per square inch, multiply by 14.6959, or divide by 0.068046.
Source: NIST SP 811 (2008), Appendix B.
Pounds per Square Inch to Atmospheres conversion table
| Pounds per Square Inch [psi] | Atmospheres [atm] |
|---|---|
| 0.01 psi | 0.0006804596 atm |
| 0.1 psi | 0.0068045964 atm |
| 1 psi | 0.0680459639 atm |
| 2 psi | 0.1360919278 atm |
| 3 psi | 0.2041378917 atm |
| 5 psi | 0.3402298195 atm |
| 10 psi | 0.6804596391 atm |
| 20 psi | 1.3609192782 atm |
| 50 psi | 3.4022981955 atm |
| 100 psi | 6.804596391 atm |
| 1000 psi | 68.0459639099 atm |
psi to atm chart from 1 to 100
- 1 psi 0.068046 atm
- 2 psi 0.136092 atm
- 3 psi 0.204138 atm
- 4 psi 0.272184 atm
- 5 psi 0.34023 atm
- 6 psi 0.408276 atm
- 7 psi 0.476322 atm
- 8 psi 0.544368 atm
- 9 psi 0.612414 atm
- 10 psi 0.68046 atm
- 11 psi 0.748506 atm
- 12 psi 0.816552 atm
- 13 psi 0.884598 atm
- 14 psi 0.952643 atm
- 15 psi 1.02069 atm
- 16 psi 1.08874 atm
- 17 psi 1.15678 atm
- 18 psi 1.22483 atm
- 19 psi 1.29287 atm
- 20 psi 1.36092 atm
- 25 psi 1.70115 atm
- 30 psi 2.04138 atm
- 35 psi 2.38161 atm
- 40 psi 2.72184 atm
- 45 psi 3.06207 atm
- 50 psi 3.4023 atm
- 55 psi 3.74253 atm
- 60 psi 4.08276 atm
- 65 psi 4.42299 atm
- 70 psi 4.76322 atm
- 75 psi 5.10345 atm
- 80 psi 5.44368 atm
- 85 psi 5.78391 atm
- 90 psi 6.12414 atm
- 95 psi 6.46437 atm
- 100 psi 6.8046 atm
Atmospheres to Pounds per Square Inch conversion table
| Atmospheres [atm] | Pounds per Square Inch [psi] |
|---|---|
| 0.01 atm | 0.1469594878 psi |
| 0.1 atm | 1.4695948776 psi |
| 1 atm | 14.6959487755 psi |
| 2 atm | 29.391897551 psi |
| 3 atm | 44.0878463265 psi |
| 5 atm | 73.4797438776 psi |
| 10 atm | 146.9594877551 psi |
| 20 atm | 293.9189755103 psi |
| 50 atm | 734.7974387757 psi |
| 100 atm | 1469.5948775513 psi |
| 1000 atm | 14695.9487755135 psi |
Pounds per Square Inch vs Atmospheres
| Pounds per Square Inch | Atmosphere | |
|---|---|---|
| Symbol | psi | atm |
| Equals | 1 psi = 0.068046 atm | 1 atm = 14.6959 psi |
What is a pounds per square inch?
Force in pounds applied over one square inch. Used in the US for tire pressure and hydraulic systems.
What is an atmosphere?
Defined as standard atmospheric pressure at sea level. Used as a reference pressure in science and diving.
Frequently asked questions
How many atmospheres are in a pounds per square inch?
There are 0.068046 atmospheres in 1 pounds per square inch (1 psi = 0.0680459639 atm).
How many pounds per square inch are in an atmosphere?
There are 14.6959 pounds per square inch in 1 atmosphere (1 atm = 14.6959487755 psi).
How do I convert pounds per square inch to atmospheres?
Multiply the number of pounds per square inch by 0.068046. For example, 10 psi × 0.068046 = 0.68046 atm. To convert back, multiply by 14.6959.
What is 10 psi in atmospheres?
10 psi = 0.68046 atm.
What is 100 psi in atmospheres?
100 psi = 6.8046 atm.
Is the conversion exact?
Yes. The factor comes from the official definitions of both units (NIST SP 811 (2008), Appendix B). Results are shown to up to 10 decimal places; round them to suit your purpose.
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