Kilopascals to Atmospheres
Type a value in either box to convert between kilopascals and atmospheres. The factor is 0.00986923.
| Kilopascals | Atmospheres |
|---|---|
| 1 kPa | 0.009869 atm |
| 2 kPa | 0.019738 atm |
| 3 kPa | 0.029608 atm |
| 5 kPa | 0.049346 atm |
| 10 kPa | 0.098692 atm |
| 25 kPa | 0.246731 atm |
| 50 kPa | 0.493462 atm |
| 100 kPa | 0.986923 atm |
How to use
- Enter a value in the Kilopascals field.
- The Atmospheres figure appears immediately — no button to press.
- Typing in the Atmospheres field converts back to Kilopascals the same way.
- Use the reference table for the values that come up most often.
Kilopascals to Atmospheres formula
To convert kilopascals to atmospheres, multiply by 0.00986923267.
atm = kPa × 0.00986923267
Why this factor: the kilopascal and the atmosphere are both defined against the pascal, so dividing one definition by the other gives 0.00986923267 directly. Both definitions are set out in full below.
To go the other way, divide by 0.00986923267 — or use the Atmospheres to Kilopascals converter, which is the same calculation reversed.
Worked example
Take 760 kPa and multiply by the factor 0.00986923267: the result is 7.500617 atm.
760 kPa × 0.00986923267 = 7.500617 atm
The converter above does this for any value you type, in either direction.
What is a kilopascal?
A kilopascal is 1,000 pascals, the practical metric pressure unit.
Definition: Exactly 1,000 pascals. Standard atmospheric pressure is 101.325 kPa.
Where it is used: Tyre pressures outside the US, weather reports in Canada, and structural engineering loads.
What is an atmosphere?
A standard atmosphere is a fixed reference pressure, originally average sea-level air pressure.
Definition: Defined as exactly 101,325 pascals — an exact convention, not a measurement.
Where it is used: Chemistry reference conditions, diving pressure, and high-pressure physics.
Kilopascals vs Atmospheres
The kilopascal is a metric unit while the atmosphere is a specialized unit. That is why the factor between them is not a round number: the two systems were defined independently and only later tied together by exact agreement.
Frequently asked questions
How many atmospheres are in a kilopascal?
One kilopascal equals 0.00986923267 atmospheres.
What is the formula to convert kilopascals to atmospheres?
Multiply the number of kilopascals by 0.00986923267. To reverse it, divide by 0.00986923267 instead.
How do I convert atmospheres back to kilopascals?
Divide by 0.00986923267, which is the same as multiplying by 101.325.
How many atmospheres are in 10 kilopascals?
10 kPa works out to 0.098692 atm.
How is the kilopascal defined?
Exactly 1,000 pascals. Standard atmospheric pressure is 101.325 kPa.