Standard Atmospheres to Pascals Converter
1 standard atmosphere = 101,325 pascals
1 standard atmosphere equals 101,325 pascals
How to convert standard atmospheres to pascals
Unit conversion preserves the pressure reference. Gauge pressure and absolute pressure are different readings; changing between them also needs the ambient pressure. Mercury and water-column units use the conventions stated in their unit notes.
Pa = atm × 101325One standard atmosphere is 101325 pascals, so a single multiplication converts any value.
1,013,250 Pa = 10 × 101325Standard atmospheres to pascals conversion table
Common values in standard atmospheres, converted to pascals.
| Standard atmospheres (atm) | Pascals (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 | 2,533,125 |
| 50 | 5,066,250 |
| 100 | 10,132,500 |
| 250 | 25,331,250 |
| 500 | 50,662,500 |
| 1,000 | 101,325,000 |
About these units
standard atmosphereatm
Exactly 101,325 pascals, the defined standard sea-level pressure.
Reference: CGPM 1954.
pascalPa
The SI derived unit of pressure: one newton per square metre.
Sources and precision
Table results are rounded to 8 significant digits; formula constants may be rounded to 10. Worked example answers use 6 significant digits. The converter starts at 6 significant digits and lets you change display precision. Calculations use the stored factors without intermediate rounding. Exact unit definitions do not make an input measurement more precise; conventional and measured factors follow the assumptions stated here.