Atmospheres to Pounds per Square Inch (atm to psi) Converter
1 atmosphere (atm) = 14.6959 pounds per square inch (psi). To convert atmospheres to pounds per square inch, multiply by 14.6959: 25 atm × 14.6959 = 367.399 psi.
Quick facts
- 1 atm = 14.6959 psi
- 1 psi = 0.068046 atm
- Formula: psi = atm × 14.6959
- Quick estimate: multiply by about 15
How to convert atmospheres to pounds per square inch
- Take the value in atmospheres.
- Multiply it by 14.6959 (the number of pounds per square inch in one atmosphere).
- Round the result to the precision you need.
Worked example: 25 atm × 14.6959 = 367.399 psi.
To convert pounds per square inch back to atmospheres, multiply by 0.068046, or divide by 14.6959.
Source: NIST SP 811 (2008), Appendix B.
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 |
atm to psi chart from 1 to 100
- 1 atm 14.6959 psi
- 2 atm 29.3919 psi
- 3 atm 44.0878 psi
- 4 atm 58.7838 psi
- 5 atm 73.4797 psi
- 6 atm 88.1757 psi
- 7 atm 102.872 psi
- 8 atm 117.568 psi
- 9 atm 132.264 psi
- 10 atm 146.959 psi
- 11 atm 161.655 psi
- 12 atm 176.351 psi
- 13 atm 191.047 psi
- 14 atm 205.743 psi
- 15 atm 220.439 psi
- 16 atm 235.135 psi
- 17 atm 249.831 psi
- 18 atm 264.527 psi
- 19 atm 279.223 psi
- 20 atm 293.919 psi
- 25 atm 367.399 psi
- 30 atm 440.878 psi
- 35 atm 514.358 psi
- 40 atm 587.838 psi
- 45 atm 661.318 psi
- 50 atm 734.797 psi
- 55 atm 808.277 psi
- 60 atm 881.757 psi
- 65 atm 955.237 psi
- 70 atm 1028.72 psi
- 75 atm 1102.2 psi
- 80 atm 1175.68 psi
- 85 atm 1249.16 psi
- 90 atm 1322.64 psi
- 95 atm 1396.12 psi
- 100 atm 1469.59 psi
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 |
Atmospheres vs Pounds per Square Inch
| Atmosphere | Pounds per Square Inch | |
|---|---|---|
| Symbol | atm | psi |
| Equals | 1 atm = 14.6959 psi | 1 psi = 0.068046 atm |
What is an atmosphere?
Defined as standard atmospheric pressure at sea level. Used as a reference pressure in science and diving.
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.
Frequently asked questions
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 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 do I convert atmospheres to pounds per square inch?
Multiply the number of atmospheres by 14.6959. For example, 10 atm × 14.6959 = 146.959 psi. To convert back, multiply by 0.068046.
What is 10 atm in pounds per square inch?
10 atm = 146.959 psi.
What is 100 atm in pounds per square inch?
100 atm = 1,469.59 psi.
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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