Quick answer: 1 Atmosphere (atm) in PSI (lbf/in²)
1 atm equals 14.695949 psi. To convert Atmosphere (atm) to PSI (lbf/in²), multiply by 14.695949 using the free calculator above — no signup needed.
Pressure units
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About Pressure Converter
The Pressure Converter converts between 6 different units, including Pascal, Kilopascal, Bar, PSI (lbf/in²), Atmosphere (atm). The base unit is the Pascal, and every other unit on this page is defined as an exact multiple of it. Type any value into the calculator above to convert instantly — free, unlimited, no signup and nothing to install.
Common equivalents: 1 Pascal = 0.001 Kilopascal, 0.00001 Bar, 0.000145038 PSI (lbf/in²).
Scale of this category: the smallest unit is the Pascal (Pa) and the largest is the Atmosphere (atm) (atm).
Last updated: 2026-09-15
Pressure conversion factors
| Unit | Symbol | Value in Pascal |
|---|---|---|
| Pascal | Pa | 1 Pa = 1 Pa |
| Kilopascal | kPa | 1 kPa = 1000 Pa |
| Bar | bar | 1 bar = 100000 Pa |
| PSI (lbf/in²) | psi | 1 psi = 6894.76 Pa |
| Atmosphere (atm) | atm | 1 atm = 101325 Pa |
| Torr / mmHg | Torr | 1 Torr = 133.322368 Pa |
Worked Examples
See exactly how the conversion works with real numbers, step by step.
How much is 1 Atmosphere (atm) in PSI (lbf/in²)?
- Multiply 1 by the conversion factor 14.695949
- 1 Atmosphere (atm) = 14.695949 PSI (lbf/in²)
How much is 5 Atmosphere (atm) in PSI (lbf/in²)?
- Multiply 5 by the conversion factor 14.695949
- 5 Atmosphere (atm) = 73.479744 PSI (lbf/in²)
How much is 25 Atmosphere (atm) in PSI (lbf/in²)?
- Multiply 25 by the conversion factor 14.695949
- 25 Atmosphere (atm) = 367.398719 PSI (lbf/in²)
Quick Conversion Reference Table
| Atmosphere (atm) (atm) | PSI (lbf/in²) (psi) |
|---|---|
| 1 atm (Atmosphere (atm)) | 14.695949 psi (PSI (lbf/in²)) |
| 2 atm (Atmosphere (atm)) | 29.391898 psi (PSI (lbf/in²)) |
| 5 atm (Atmosphere (atm)) | 73.479744 psi (PSI (lbf/in²)) |
| 10 atm (Atmosphere (atm)) | 146.959488 psi (PSI (lbf/in²)) |
| 20 atm (Atmosphere (atm)) | 293.918976 psi (PSI (lbf/in²)) |
| 50 atm (Atmosphere (atm)) | 734.797439 psi (PSI (lbf/in²)) |
| 100 atm (Atmosphere (atm)) | 1469.59 psi (PSI (lbf/in²)) |
| 500 atm (Atmosphere (atm)) | 7347.97 psi (PSI (lbf/in²)) |
| 1000 atm (Atmosphere (atm)) | 14695.95 psi (PSI (lbf/in²)) |
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How to Use This Converter
- Enter your value
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FAQ
How much is 1 Atmosphere (atm) in PSI (lbf/in²)?
1 Atmosphere (atm) = 14.695949 PSI (lbf/in²).
How do I convert Atmosphere (atm) to PSI (lbf/in²)?
Enter your value in Atmosphere (atm) into the converter above and the result in PSI (lbf/in²) appears instantly. 1 atm equals 14.695949 psi — just multiply your value by 14.695949.
What is the formula for Atmosphere (atm) to PSI (lbf/in²)?
The formula is: value in PSI (lbf/in²) = value in Atmosphere (atm) × 14.695949. For example, 5 atm × 14.695949 = 73.479744 psi.
Is this Atmosphere (atm) to PSI (lbf/in²) converter free and accurate?
Yes. This Atmosphere (atm) to PSI (lbf/in²) converter is 100% free, uses the exact international conversion factor (14.695949), and works on any device with no signup.
How do I convert PSI (lbf/in²) back to Atmosphere (atm)?
To convert back, divide by 14.695949 (or multiply by 0.068046). You can also use our dedicated How Many Atmosphere (atm) in 1 PSI (lbf/in²)? page for instant results.
Do I need to download an app or sign up?
No. The converter runs entirely in your browser — nothing to install, no account, no fees. It even keeps working offline once the page has loaded.
Which Pressure units are supported?
This converter supports 6 units: Pascal, Kilopascal, Bar, PSI (lbf/in²), Atmosphere (atm), Torr / mmHg.