Convert atmospheres to pascals
Converting atmospheres to pascals is a common pressure task, whether you are checking a recipe, a spec sheet, a travel distance or a homework problem. Since 1 atm equals 101,325 Pa, the math is a single multiplication — and this page does it for you instantly, with the formula, a table of common values and answers to the questions people ask most.
Exact factor
How to convert atmospheres to pascals
To convert atmospheres to pascals, multiply the number of atmospheres by 101,325. For example, 10 atm × 101,325 = 1,013,250 Pa.
Pa = atm × 101,325
- Write down the value in atmospheres you want to convert.
- Multiply it by 101,325 (the exact atm→Pa factor).
- The result is your value in pascals. Check it below with the converter or the table.
Conversion table
Common values of atmospheres and their equivalents in pascals:
| atm | Pa |
|---|---|
| 1 | 101,325 |
| 2 | 202,650 |
| 3 | 303,975 |
| 4 | 405,300 |
| 5 | 506,625 |
| 10 | 1,013,250 |
| 20 | 2,026,500 |
| 25 | 2,533,130 |
| 50 | 5,066,250 |
| 100 | 10,132,500 |
| 250 | 25,331,300 |
| 500 | 50,662,500 |
About these units
Atmosphere (atm). One standard atmosphere is defined as exactly 101,325 pascals, the reference average pressure of Earth's atmosphere at sea level. It anchors chemistry and gas-law calculations.
Pascal (Pa). The pascal is the SI unit of pressure, one newton per square meter. Because it is small, practical values are often quoted in kilopascals, bar or atmospheres.
Frequently asked questions
How do I convert atmospheres to pascals?
To convert atmospheres to pascals, multiply the number of atmospheres by 101,325. For example, 10 atm × 101,325 = 1,013,250 Pa. Or skip the math: type the value into the converter at the top of this page and the result updates instantly.
How many pascals are in 1 atmosphere?
1 atm = 101,325 Pa. That is the fixed relationship used by this converter and by international standards.
How many atmospheres are in 1 pascal?
1 Pa = 0.00000986923 atm. If you are converting in the opposite direction, use our Pascal to Atmosphere converter for the dedicated table and FAQ.
Is the atmospheres to pascals conversion exact?
Yes. Both units are defined by international agreement, so the factor of 101,325 is exact. Displayed results are rounded to 6 significant digits only for readability.
What is atmosphere used for?
One standard atmosphere is defined as exactly 101,325 pascals, the reference average pressure of Earth's atmosphere at sea level. It anchors chemistry and gas-law calculations.