How many atmospheres are in a pound per square inch?

1 psi = 0.068046 atm. To convert any amount, multiply by 0.068046.

How do you convert pounds per square inch to atmospheres?

Multiply the number of pounds per square inch by 0.068046 to get atmospheres. The formula is shown in the "How it's calculated" section above.

Where does the conversion factor come from?

It's a published international standard. Most are defined exactly by international agreement (e.g. 1 inch = 25.4 mm exactly, 1 lb = 0.45359237 kg exactly). Source citations are listed under the formula above.

Unit converter — Pressure

Pounds per square inch to atmospheres converter

Convert pounds per square inch (psi) to atmospheres (atm). Source-cited conversion factor, exact to the displayed precision.

Results are mathematically exact for the displayed precision. How we calculate.

How it's calculated

Convert pounds per square inch to atmospheres— the formula

Pounds per square inch convert to atmospheres by multiplying by the published conversion factor. The factor below is exact to the precision shown, sourced from the citation under the formula.

atm = psi × 0.068046

psi = atm × 14.6959

Pascal: SI derived. 1 bar = 100,000 Pa exactly; 1 psi = 6894.757293168 Pa; 1 atm = 101,325 Pa exactly; 1 mmHg (Torr) = 133.322387415 Pa (NIST SP 811).

Questions

Frequently asked questions

How many atmospheres are in a pound per square inch?
1 psi = 0.068046 atm. To convert any amount, multiply by 0.068046.
How do you convert pounds per square inch to atmospheres?
Multiply the number of pounds per square inch by 0.068046 to get atmospheres. The formula is shown in the "How it's calculated" section above.
Where does the conversion factor come from?
It's a published international standard. Most are defined exactly by international agreement (e.g. 1 inch = 25.4 mm exactly, 1 lb = 0.45359237 kg exactly). Source citations are listed under the formula above.