UnitConvConvert
Pressure

Convert atmospheres to psi

1 atm=14.6959psi

Use the converter below to change any atmospheres value into psi instantly — with formula, conversion table, and real-world examples.

14.69595

Conversion formula

Forward
psi = atmospheres × 14.6959
Reverse
atmospheres = psi × 0.06805

Example: 10 atm × 14.6959 = 146.959 psi.

About both units

From

Atmosphere

atm

The standard atmosphere equals 101,325 pascals exactly — defined by CGPM in 1954. Represents average sea-level atmospheric pressure. Used in chemistry, aviation and engineering as a reference pressure.

Real-world: Sea-level pressure: 1 atm. Mount Everest summit: ~0.33 atm. Submarine at 100 m: ~11 atm.
Read full atmosphere reference →
To

Pound per Square Inch

psi

Pounds per square inch equals approximately 6895 Pa. It is the dominant pressure unit in the US — tyre pressures, plumbing, compressed air. Standard US tyre pressure: 32–35 psi.

Real-world: US tyre: 32–35 psi. Water supply: 40–60 psi. SCUBA tank: 3000 psi. Car AC system: 30–200 psi.
Read full pound per square inch reference →

Atmosphere to Pound per Square Inch conversion table

Common atmospheres to psi values for quick reference.

Atmosphere (atm)Pound per Square Inch (psi)
1 atm14.6959 psi
5 atm73.4797 psi
10 atm146.959 psi
25 atm367.399 psi
50 atm734.797 psi
100 atm1,469.59 psi
200 atm2,939.19 psi
500 atm7,347.97 psi
1,000 atm14,695.95 psi
5,000 atm73,479.74 psi

Tips & common mistakes

Quick tips

  • 1 atm = 101,325 Pa = 1.01325 bar = 14.696 psi.
  • Note: atm ≠ bar. Close but not identical.
  • Modern SI prefers pascals; atm is a legacy reference.

Avoid these

  • Using 1 atm = 1 bar exactly — off by 1.3%.
  • Confusing standard atm with technical atmosphere (98,066.5 Pa) or atmosphere-absolute in diving.
  • Applying 1 atm outside sea level without correction.

Frequently asked questions

How many psi in a atmosphere?
One atmosphere equals 14.6959 psi.
How do I convert atmospheres to psi?
Multiply the atmosphere value by 14.6959 to get the equivalent in psi.
What is 100 atmospheres in psi?
100 atmospheres equals 1,469.59 psi.
Is a atmosphere bigger than a pound per square inch?
Yes. 1 atmosphere equals 14.6959 psi, so one atmosphere is larger.
How to convert atmospheres to psi without a calculator?
Multiply by 14.7 for a quick estimate; use a calculator for precise results.

Related pressure conversions

📊 See full comparison matrix →

More from Atmosphere

atm → Pa
1 = 101,325 Pa
atm → kPa
1 = 101.325 kPa
atm → MPa
1 = 0.1013 MPa
atm → bar
1 = 1.01325 bar
atm → mbar
1 = 1,013.25 mbar
atm → mmHg
1 = 760 mmHg
atm → Torr
1 = 760 Torr
atm → inHg
1 = 29.9213 inHg

More to Pound per Square Inch

Pa → psi
1 = 0.000145 psi
kPa → psi
1 = 0.145 psi
MPa → psi
1 = 145.038 psi
bar → psi
1 = 14.5038 psi
mbar → psi
1 = 0.0145 psi
mmHg → psi
1 = 0.01934 psi
Torr → psi
1 = 0.01934 psi
inHg → psi
1 = 0.4912 psi

Conversions in other categories

WeightKilogram → PoundLengthKilometer → MileTemperatureCelsius → FahrenheitVolumeLiter → US GallonAreaSquare Meter → Square FootSpeedKilometer per Hour → Mile per HourEnergyKilojoule → KilocaloriePowerKilowatt → Mechanical Horsepower