Quick answer: 1 Atmosphere (atm) in Pascal
1 atm equals 101325 Pa. To convert Atmosphere (atm) to Pascal, multiply by 101325 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 Pascal?
- Multiply 1 by the conversion factor 101325
- 1 Atmosphere (atm) = 101325 Pascal
How much is 5 Atmosphere (atm) in Pascal?
- Multiply 5 by the conversion factor 101325
- 5 Atmosphere (atm) = 506625 Pascal
How much is 25 Atmosphere (atm) in Pascal?
- Multiply 25 by the conversion factor 101325
- 25 Atmosphere (atm) = 2533125 Pascal
Quick Conversion Reference Table
| Atmosphere (atm) (atm) | Pascal (Pa) |
|---|---|
| 1 atm (Atmosphere (atm)) | 101325 Pa (Pascal) |
| 2 atm (Atmosphere (atm)) | 202650 Pa (Pascal) |
| 5 atm (Atmosphere (atm)) | 506625 Pa (Pascal) |
| 10 atm (Atmosphere (atm)) | 1013250 Pa (Pascal) |
| 20 atm (Atmosphere (atm)) | 2026500 Pa (Pascal) |
| 50 atm (Atmosphere (atm)) | 5066250 Pa (Pascal) |
| 100 atm (Atmosphere (atm)) | 10132500 Pa (Pascal) |
| 500 atm (Atmosphere (atm)) | 50662500 Pa (Pascal) |
| 1000 atm (Atmosphere (atm)) | 101325000 Pa (Pascal) |
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How to Use This Converter
- Enter your value
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FAQ
How much is 1 Atmosphere (atm) in Pascal?
1 Atmosphere (atm) = 101325 Pascal.
How do I convert Atmosphere (atm) to Pascal?
Enter your value in Atmosphere (atm) into the converter above and the result in Pascal appears instantly. 1 atm equals 101325 Pa — just multiply your value by 101325.
What is the formula for Atmosphere (atm) to Pascal?
The formula is: value in Pascal = value in Atmosphere (atm) × 101325. For example, 5 atm × 101325 = 506625 Pa.
Is this Atmosphere (atm) to Pascal converter free and accurate?
Yes. This Atmosphere (atm) to Pascal converter is 100% free, uses the exact international conversion factor (101325), and works on any device with no signup.
How do I convert Pascal back to Atmosphere (atm)?
To convert back, divide by 101325 (or multiply by 0.000009869230000000001). You can also use our dedicated How Many Atmosphere (atm) in 1 Pascal? 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.