How do I convert psi to atm?

Use the formula shown above or enter a value to see psi converted to atm instantly.

What is the formula for psi to atm?

The converter calculates atm by applying the category-specific conversion factor for Pressure.

When should I use psi vs atm?

psi and atm are both part of the Pressure category; pick the unit that matches your measurement context (e.g., scale, region, or industry standard).

Pressure Conversion Cheat Sheet

Convert psi to atm

Use the live converter below to translate between Pound per square inch (psi) and Atmosphere (atm). Scroll further for quick examples, formula tips, and related units.

Formula insight: Most unit conversions use a simple multiplication or division by a conversion factor. The calculator shows the exact formula used.

Convert

psi → atm

Pound per square inch

psi

Atmosphere

0.068

atm

Rounded result (4 decimals max)

Formula

1 psi = 0.068 atm

Conversion sourcesTap or click to view references

The International System of Units (SI) — NIST Special Publication 330
National Institute of Standards and Technology (NIST). The SI Brochure (SP 330) is the definitive English edition of the BIPM SI tables. NIST’s edition lists the official constants and conversion factors tying inch-pound units to SI, which SwapUnits applies for length, mass, temperature, pressure, volume, and related conversions. See /standards/nist-si-tenfold for the complete decimal multiple/submultiple table. View source · View SI table

Results update as you type. Swap the direction to convert back from atm to psi.

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psi to atm quick table

Multiply any row by the same factor to scale results. Use the converter above to enter exact values with your own units.

Pound per square inch (psi)	Atmosphere (atm)
0.25 psi	0.017 atm
0.5 psi	0.034 atm
1 psi	0.068 atm
2 psi	0.1361 atm
5 psi	0.3402 atm
10 psi	0.6805 atm
25 psi	1.7011 atm
100 psi	6.8046 atm

atm back to psi

Keep the reciprocal handy when double-checking calculations or undoing a conversion.

Atmosphere (atm)	Pound per square inch (psi)
0.25 atm	3.674 psi
0.5 atm	7.348 psi
1 atm	14.6959 psi
2 atm	29.3919 psi
5 atm	73.4797 psi
10 atm	146.9595 psi
25 atm	367.3987 psi
100 atm	1,469.5949 psi

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