Atmospheres to Kilopascals
Convert atmospheres to kilopascals instantly. 1 atm = 101.325 kPa. Includes the exact factor, a conversion table of common values and the definition of both units.
How to convert atmospheres to kilopascals
To convert atmospheres to kilopascals, multiply by 101.325. The relationship is fixed, so the same factor works for any quantity — there is nothing to look up and nothing that changes with temperature, location or context.
kPa = atm × 101.325
Atmospheres to Kilopascals conversion table
The values people look up most often, rounded for reading. Use the calculator above for anything in between.
| Atmospheres | Kilopascals |
|---|---|
| 1 atm | 101.325 kPa |
| 2 atm | 202.65 kPa |
| 3 atm | 303.975 kPa |
| 5 atm | 506.625 kPa |
| 10 atm | 1,013.25 kPa |
| 20 atm | 2,026.5 kPa |
| 25 atm | 2,533.12 kPa |
| 50 atm | 5,066.25 kPa |
| 100 atm | 10,132.5 kPa |
| 500 atm | 50,662.5 kPa |
| 1,000 atm | 101,325 kPa |
What is a atmosphere?
The standard atmosphere, defined as exactly 101,325 Pa.
What is a kilopascal?
A thousand pascals. The metric working unit for tyre and system pressures.
The formula
kPa = atm × 101.325
Every result on this page comes from this formula. Nothing is rounded until the final display, so figures match a spreadsheet to the cent.
How to use the Atmospheres to Kilopascals
- Type the number of atmospheres you want to convert.
- Read the result in kilopascals straight away — there is no button to press.
- Check the table below for the values that come up most often, or reverse the conversion with the linked kilopascals to atmospheres page.
Atmospheres to Kilopascals — frequently asked questions
How many kilopascals are in a atmosphere?
One atmosphere equals 101.325 kPa. kPa = atm × 101.325
What is the formula to convert atmospheres to kilopascals?
The formula is kPa = atm × 101.325. It is an exact definition rather than an approximation, so the conversion never drifts no matter how large the number.
How do I convert kilopascals back to atmospheres?
Divide instead of multiplying: one kilopascal is 0.0098692327 atm. The reverse converter is linked in the related tools list.
Is this conversion exact?
Yes. Both units are defined against the same base unit by international agreement, so the factor is exact — any rounding you see is only in the display, which you can widen by entering more decimal places.
Is this atmospheres to kilopascals free to use?
Yes. Every calculator on the site is free, needs no sign-up, and runs entirely in your browser, so your figures never leave your device.
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About this calculator
Written and reviewed by The Samsung Calculator editorial team. Every calculator is written against a published formula, reviewed against at least one independent reference implementation, and dated when it changes.
Last reviewed August 19, 2026 · Calculation runs client-side · No data collected · Report an error