MeasureCalc

Convert Pounds per square inch (psi) to Standard atmosphere (atm)

Category: Pressure

0.068046 atm

1 psi = 0.068046 atm

Precision: 6 decimals; very small non-zero results use significant digits.

How to convert pounds per square inch (psi) to standard atmosphere (atm)

Pressure is force per unit area. Pascals (and kPa, hPa) are SI, while bar and psi are widely used in engineering and scuba. Conversions must respect absolute vs gauge references when comparing values.

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Quick conversion table

Handy values for Pounds per square inch (psi) to Standard atmosphere (atm). Click a value to calculate that result.

Pounds per square inch (psi) Standard atmosphere (atm)
0.068046
0.034023
0.170115
0.68046

Conversion formula

Use the following formula:

Standard atmosphere (atm) ≈ Pounds per square inch (psi) × 0.06804596391

Convert pressure from Pounds per square inch (psi) to Standard atmosphere (atm) using a fixed unit ratio. Round only the final result.

Common mistakes

  • Comparing gauge pressure (psig) with absolute pressure (psia/hPa) without converting reference.
  • Mixing bar with atm (1 atm = 1.01325 bar).

Unit facts

  • Pounds per square inch (psi): Pounds per square inch (psi) is common for tires, hydraulics, and scuba tanks (1 psi ≈ 6,894.76 Pa).
  • Standard atmosphere (atm): Standard atmosphere is exactly 101,325 Pa; reference pressure in chemistry and physics.

About Pounds per square inch (psi)

Pounds per square inch (psi)

Imperial/US pressure unit. Common for tires, hydraulics, and compressors; often shown with gauge (psig) vs absolute (psia).

History: Industrial adoption in North America entrenched psi as a practical non-SI unit.

About Standard atmosphere (atm)

Standard atmosphere (atm)

Exactly 101,325 Pa. Reference pressure for chemistry and gas laws; useful for normalizing conditions.

History: A conventional unit set for convenience in calculations and comparative tables.

Frequently asked questions

How many Standard atmosphere (atm) are in one Pounds per square inch (psi)?
1 Pounds per square inch (psi) equals 0.068046 Standard atmosphere (atm).
Is Pounds per square inch (psi) to Standard atmosphere (atm) conversion exact?
Many unit conversions are exact by definition, while others use standardized conversion constants.
What is the fastest way to convert Pounds per square inch (psi) to Standard atmosphere (atm)?
Enter a value in Pounds per square inch (psi), choose Standard atmosphere (atm) as the target unit, and the calculator will instantly return the result.

Convert Pounds per square inch (psi) to other units

Convert other units to Standard atmosphere (atm)