Atmospheres to Pascals Converter
Convert standard atmospheres to pascals instantly. Type a value, change either unit, or press swap to go the other way. 1 standard atmosphere = 101,325 pascals.
1 standard atmosphere = 101,325 pascals
How to convert standard atmospheres to pascals
pascals = standard atmospheres × 101,325
To convert standard atmospheres to pascals, multiply the value by 101,325. To go back from pascals to standard atmospheres, divide by the same number (or multiply by 9.869232667 × 10-6).
Worked examples
- 1 atm: 1 × 101,325 = 101,325 Pa
- 2 atm: 2 × 101,325 = 202,650 Pa
- 3 atm: 3 × 101,325 = 303,975 Pa
One atmosphere is 101,325 pascals, or about 101.3 kilopascals, which is near 1 bar. Multiply by 101.3 to get kilopascals.
Atmospheres to Pascals conversion table
Standard Atmospheres to Pascals
| atm | Pa |
|---|---|
| 0.1 | 10,132.5 |
| 0.5 | 50,662.5 |
| 1 | 101,325 |
| 2 | 202,650 |
| 3 | 303,975 |
| 5 | 506,625 |
| 10 | 1,013,250 |
| 50 | 5,066,250 |
| 100 | 10,132,500 |
| 200 | 20,265,000 |
Pascals to Standard Atmospheres
| Pa | atm |
|---|---|
| 0.1 | 9.8692327 × 10-7 |
| 0.5 | 4.9346163 × 10-6 |
| 1 | 9.8692327 × 10-6 |
| 2 | 0.0000197385 |
| 3 | 0.0000296077 |
| 5 | 0.0000493462 |
| 10 | 0.0000986923 |
| 50 | 0.0004934616 |
| 100 | 0.0009869233 |
| 200 | 0.0019738465 |
Pressure equivalents
See how one standard atmosphere and one pascal compare with every other pressure unit on the site.
1 standard atmosphere equals
| Unit | Value |
|---|---|
| pascals (Pa) | 101,325 |
| kilopascals (kPa) | 101.325 |
| bars (bar) | 1.01325 |
| pounds per square inch (psi) | 14.69595 |
| millimeters of mercury (mmHg) | 759.9999 |
1 pascal equals
| Unit | Value |
|---|---|
| kilopascals (kPa) | 0.001 |
| bars (bar) | 0.00001 |
| pounds per square inch (psi) | 0.0001450377 |
| standard atmospheres (atm) | 9.869233 × 10-6 |
| millimeters of mercury (mmHg) | 0.007500616 |
When you need to convert standard atmospheres to pascals
The standard atmosphere is a handy reference in chemistry, diving and aerospace, where it represents sea-level air pressure. Converting to pascals puts it in the SI unit used in gas-law calculations, engineering specifications and weather science.
About the units
Standard atmosphere (atm)
One atmosphere is exactly 101,325 pascals, the average air pressure at sea level.
Pascal (Pa)
The pascal is the SI unit of pressure: one newton per square meter. It is a very small unit, so kilopascals are more common.
Frequently asked questions
How do I convert standard atmospheres to pascals?
Multiply the number of standard atmospheres by 101,325. For example, 10 standard atmospheres × 101,325 = 1,013,250 pascals.
How many pascals are in one standard atmosphere?
There are 101,325 pascals in one standard atmosphere.
How many standard atmospheres are in one pascal?
There are 9.869232667 × 10-6 standard atmospheres in one pascal.
Is atmospheric pressure always exactly 1 atm?
No. The standard atmosphere (1 atm = 101,325 Pa) is a fixed reference value, but real air pressure changes with weather and altitude. At 5,500 m above sea level, for example, it falls to roughly half an atmosphere.
Can I convert other pressure units with this tool?
Yes. Use the From and To drop-downs in the converter to choose any pressure unit, or press the swap button to reverse the conversion. All calculations use internationally defined conversion factors.