Atmosphere to Pascal Converter
One Atmosphere equals 101325 Pascal (1 atm = 101325 Pa). Multiply a Atmosphere value by 101325 to get the equivalent in Pascal. Use the calculator above for instant results, or follow the formula, worked examples, and reference table below.
Formula
Pa = atm × 101325
Multiply the Atmosphere value by 101325 to get the equivalent value in Pascal.
Example Conversions
1 Atmosphere (atm)
101325 Pascal (Pa)
5 Atmosphere (atm)
506625 Pascal (Pa)
10 Atmosphere (atm)
1013250 Pascal (Pa)
25 Atmosphere (atm)
2533125 Pascal (Pa)
100 Atmosphere (atm)
10132500 Pascal (Pa)
Conversion Table
| Atmosphere (atm) | Pascal (Pa) |
|---|---|
| 0.1 | 10132.5 |
| 0.5 | 50662.5 |
| 1 | 101325 |
| 2 | 202650 |
| 5 | 506625 |
| 10 | 1013250 |
| 25 | 2533125 |
| 50 | 5066250 |
| 100 | 10132500 |
| 250 | 25331250 |
| 500 | 50662500 |
| 1000 | 101325000 |
How to Convert Manually
Use these steps to convert Atmosphere values to Pascal without the calculator.
- Write down the value in Atmosphere (atm) that you want to convert.
- Multiply that value by 101325.
- For example, 10 Atmosphere × 101325 = 1013250 Pascal.
- Label the result as Pascal (Pa).
Relative Size Comparison
This chart shows the visual difference in size between exactly one Atmosphere and one Pascal.
About Atmosphere and Pascal
The standard atmosphere is defined as exactly 101,325 pascals — mean sea-level air pressure. Chemistry reference conditions and diving depth calculations use atmospheres. The pascal is the SI derived unit of pressure — one newton per square meter. It is small for everyday pressures, so kilopascals and hectopascals appear more often in practice. One Atmosphere equals 101325 Pascal (1 atm = 101325 Pa). Atmosphere to Pascal conversion comes up most often in chemistry reference conditions and in diving depth pressure, typically when figures need restating for physics and engineering calculations.
Precision and Rounding: Several pressure factors are exact by definition (1 atm = 101,325 Pa; 1 bar = 100,000 Pa) while others, like psi and mmHg, are derived and carry long decimals. Tire and weather readings tolerate whole-number rounding; calibration, medicine, and process engineering need the full factor before rounding.
Conversion factors per NIST Special Publication 811 and the BIPM SI Brochure (9th edition) (reference).
Worked Example
15 Atmosphere equals 1519875 Pascal.
15 atm × 101325 = 1519875 Pa
FAQ
How do I convert Atmosphere to Pascal?
Multiply the Atmosphere value by 101325 to get the equivalent value in Pascal.
What is the formula for Atmosphere to Pascal?
The formula is Pa = atm × 101325.
How many Pascal are in 1 Atmosphere?
1 Atmosphere equals 101325 Pascal.
Can I convert Pascal back to Atmosphere?
Yes. 1 Pascal equals 0.000009869232667 Atmosphere, and the related converter can reverse the calculation.
What are common names for Atmosphere and Pascal?
Atmosphere is shown as atm and may also be searched as atmospheres, standard atmosphere. Pascal is shown as Pa and may also be searched as pascals, pa.
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