Pressure / atm → Pa
Convert Standard atmospheres to Pascals
Convert pressure differences or absolute pressures between consistent units. Convert Standard atmospheres (atm) to Pascals (Pa). Find the formula, worked examples, unit definitions, and practical guidance below.
Reverse: Pascals to Standard atmospheres →
How to convert standard atmospheres to pascals
This changes units only. Gauge and absolute pressures need a known ambient pressure to relate them; the converter does not add atmospheric pressure.
Use x for the value in atm, b for the intermediate value in Pa, and y for the result in Pa.
Pa = atm × 101325
Worked examples
10 atm ≈ 1013250 Pa
Step 1: (10 × 101325) ≈ 1013250 Pa.
Step 2: 1013250 ÷ 1 ≈ 1013250 Pa.20 atm ≈ 2026500 Pa
Step 1: (20 × 101325) ≈ 2026500 Pa.
Step 2: 2026500 ÷ 1 ≈ 2026500 Pa.
Results are rounded to 12 significant digits. Converting units does not increase the precision of the original measurement. Very large or small values outside JavaScript’s finite numeric range are rejected.
About Standard atmospheres
Standard atmospheres (atm) measures pressure under the conventions above. The base value in Pa is (x × 101325), where x is the numerical value in atm. Factors shown here are rounded for display; calculations use the stored factor.
About Pascals
Pascals (Pa) measures pressure under the conventions above. The base value in Pa is (x × 1), where x is the numerical value in Pa. Factors shown here are rounded for display; calculations use the stored factor.
Definitions and sources
Carry the same physical assumptions into subsequent physics calculations.
Standard atmospheres to pascals reference table
| Standard atmospheres (atm) | Pascals (Pa) |
|---|---|
| 1 | 101325 |
| 5 | 506625 |
| 10 | 1013250 |
| 25 | 2533125 |
| 50 | 5066250 |
| 100 | 10132500 |
| 1000 | 101325000 |
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