Pa to atm Converter - Pascal to Standard Atmosphere
Pascal (Pa) to Standard Atmosphere (atm)
Direct answer
1 Pa = 0.000009869233 atm
atm = Pa × 0.000009869233
Converter
Conversion formula
atm = Pa × 0.000009869233
Pa = atm × 101,325
Example: 10 Pa = 10 × 0.000009869233 = 0.000098692327 atm.
Common conversion table
| Pa | atm |
|---|---|
| 1 Pa | 0.000009869233 atm |
| 2 Pa | 0.000019738465 atm |
| 5 Pa | 0.000049346163 atm |
| 10 Pa | 0.000098692327 atm |
| 20 Pa | 0.000197384653 atm |
| 50 Pa | 0.000493461633 atm |
| 100 Pa | 0.000986923267 atm |
| 1,000 Pa | 0.009869232667 atm |
Conversion derivation
Express both Pa and atm in the same base unit Pa (pascal), then cancel the shared base unit.
- 1
Rewrite Pa in the base unit
- 2
Rewrite atm in the base unit
- 3
Forward conversion
- 4
Reverse conversion
AI explanation for this conversion
This pre-generated explanation is schema-checked. Numeric results still come from the page formula and calculator.
Pa to Atm Conversion
The conversion between pascal (Pa) and standard atmosphere (atm) is based on the defined relationship that 1 atm equals exactly 101,325 Pa. Therefore, converting Pa to atm involves dividing by this number.
Definition
The pascal (Pa) is the SI unit of pressure, defined as one newton per square meter. The standard atmosphere (atm) is a unit of pressure defined as exactly 101,325 Pa, historically based on the average atmospheric pressure at sea level.
Principle
The conversion uses the exact definition: 1 atm = 101,325 Pa. To find how many atm are in 1 Pa, you compute the reciprocal: 1 Pa = 1/101,325 atm, which equals approximately 0.000009869233 atm.
Assumptions
- The conversion uses the exact defined value of 1 standard atmosphere as 101,325 Pa.
Cautions
- Standard atmosphere is a defined unit, but actual atmospheric pressure varies. This conversion is for the defined unit, not variable environmental conditions.
- The reverse conversion factor is exact (101,325 Pa per atm). The forward factor is the reciprocal and may be rounded in the formula.
FAQ
How many atm are in 1 Pa?
1 Pa = 0.000009869233 atm.
How many atm are in 10 Pa?
10 Pa = 0.000098692327 atm.
How many atm are in 100 Pa?
100 Pa = 0.000986923267 atm.
What is the formula to convert Pa to atm?
Use atm = Pa × 0.000009869233.
How many Pa are in 1 atm?
1 atm = 101,325 Pa.
What should I check when converting Pa to atm?
Use the conversion factor and round the result to the precision required by your calculation.