PSI to Atmospheres Converter

ConversionEdited by Hemant Kumar and Anjita Rai, founders · How we checkUpdated Free · No sign-up

Quick answer: To convert PSI to atmospheres, multiply by 0.06804596. For example, 10 psi is 0.6804596 atm. One pound per square inch equals 0.06804596 atm.

Use the PSI to Atmospheres Converter

PSI to Atmospheres formula and what each symbol means

atm = psi × 0.06804596

Symbols used in the formula
SymbolMeaning
psiPound per square inch
atmStandard atmosphere

PSI to Atmospheres examples

1 psi

1 psi × 0.06804596 = 0.06804596 atm.

10 psi

10 psi × 0.06804596 = 0.6804596 atm.

100 psi

100 psi × 0.06804596 = 6.804596 atm.

PSI compared with Atmospheres

One atm is 14.7 times as large as one psi, so your number gets smaller when you convert PSI to atmospheres and bigger when you convert back. If the answer is not smaller than what you typed, you multiplied instead of dividing.

About PSI and atmospheres

Pound per square inch (psi): One pound-force per square inch, about 6,894.757 pascals. Standard atmosphere (atm): Standard atmosphere, exactly 101,325 pascals.

Where PSI to atmospheres conversions are used

Hydraulics, boilers and pneumatic tools list their limits in bar, psi or MPa. Tyre pressure is shown in psi, bar or kPa, depending on the vehicle and country.

How to calculate PSI to Atmospheres step by step

  1. Enter the value in psi (the starting unit).
  2. Multiply by 0.06804596, because 1 psi = 0.06804596 atm.
  3. The product is the value in atm. To go back, divide by 0.06804596 or multiply by 14.69595.

Popular pressure conversions

How to read your PSI to Atmospheres result

Quick estimate: multiply by about 0.068 to get atmospheres from PSI; this is within 0.1% of the exact factor. One standard atmosphere is exactly 101,325 Pa, and one bar is exactly 100,000 Pa.

PSIATMOSPHERES
10.06804596
20.1360919
50.3402298
100.6804596
201.360919
503.402298
1006.804596
1,00068.04596

Atmospheres to PSI: quick table

ATMOSPHERESPSI
114.69595
573.47974
10146.9595
25367.3987
50734.7974
1001,469.595
2503,673.987
5007,347.974

Common mistakes when calculating PSI to Atmospheres

  • Reading mmHg and Torr as clearly different units: they differ by only about one part in seven million.
  • Dividing when you should multiply: from psi to atm multiply by 0.06804596; from atm to psi divide by 0.06804596.

PSI to Atmospheres FAQ

How many atm are in 1 psi?

1 psi equals 0.06804596 atm.

How many psi are in 1 atm?

1 atm equals 14.69595 psi.

Is 1 psi = 0.06804596 atm an exact conversion?

The factor is shown rounded to 7 significant figures (0.06804596). The calculator above uses more digits.

What is a standard atmosphere (atm)?

Standard atmosphere, exactly 101,325 pascals.

How can I estimate PSI to atmospheres in my head?

Quick estimate: multiply by about 0.068 to get atmospheres from PSI; this is within 0.1% of the exact factor.

What is 25 psi in atmospheres?

25 psi = 1.701149 atm (since 25 × 0.06804596).

What is 80 psi in atmospheres?

80 psi = 5.443677 atm (since 80 × 0.06804596).

What is 500 psi in atmospheres?

500 psi = 34.02298 atm (since 500 × 0.06804596).

How many decimals should I keep when converting psi to atm?

Match the precision of your original measurement. For example, 0.6804596 atm rounds to 0.68 atm at 3 significant figures; keep more digits only for engineering or scientific work.

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Method, review and disclaimer

Edited by: Hemant Kumar and Anjita Rai, founders of ToolsVault (SEO and content professional, not a licensed adviser). Method: this tool runs in your browser using the formula shown on this page; the numbers you enter are not sent to our servers. Sources: NIST SP 811, Appendix B.8: conversion factors, BIPM: the SI derived units