Atmospheres to Kilopascals Converter
atm → kPa · 🔬 Pressure
1 Atmospheres = 101.325 Kilopascals
How to convert Atmospheres to Kilopascals
To convert Atmospheres to Kilopascals, multiply the value in Atmospheres by 101.325. For example, 5 atm = 506.625 kPa.
Converting Atmospheres (atm) to Kilopascals (kPa) is a frequent need, and the exact relationship is 1 atm = 101.325 kPa. Whether you're working on a project, checking a specification, or just curious, the calculator above gives you the answer instantly for any value you enter.
Pressure conversions are used in weather forecasting, engineering, diving, automotive maintenance, and industrial processes. Different fields favor different units, making conversion a regular necessity.
Understanding Atmospheres and Kilopascals
The pascal is the SI unit, but it's small, so kilopascals and bars are more practical for everyday use. PSI (pounds per square inch) dominates in US engineering and tire pressures, while atmospheres provide an intuitive reference point — 1 atm is roughly the air pressure at sea level. Weather reports use hectopascals or millibars, which are numerically identical.
How accurate is this conversion?
Pressure conversions are based on fixed physical definitions. One standard atmosphere equals exactly 101,325 pascals, and 1 bar equals exactly 100,000 pascals, so all conversions here are precise.
All conversion factors on ClearUnits are based on internationally recognised standards (the International System of Units, SI, and official definitions). Factors are reviewed for accuracy and the calculator uses full-precision values, rounding only the displayed result.
Quick reference: common Atmospheres to Kilopascals values
The most frequently searched conversions are 1 Atmospheres = 101.325 Kilopascals, 5 Atmospheres = 506.625 Kilopascals, 10 Atmospheres = 1,013.25 Kilopascals, and 100 Atmospheres = 10,132.5 Kilopascals. The full table further down covers every common value, and the calculator handles any number you need in between.
Pro tip: For tire pressure, most vehicles specify PSI in the US and bar or kPa elsewhere. As a rule of thumb, 1 bar ≈ 14.5 PSI, so a typical 2.2 bar tire pressure is about 32 PSI.
Atmospheres to Kilopascals — Conversion Table
| Atmospheres (atm) | Kilopascals (kPa) |
|---|---|
| 0.1 atm | 10.1325 kPa |
| 0.25 atm | 25.33125 kPa |
| 0.5 atm | 50.6625 kPa |
| 1 atm | 101.325 kPa |
| 2 atm | 202.65 kPa |
| 5 atm | 506.625 kPa |
| 10 atm | 1,013.25 kPa |
| 25 atm | 2,533.125 kPa |
| 50 atm | 5,066.25 kPa |
| 100 atm | 10,132.5 kPa |
| 250 atm | 25,331.25 kPa |
| 500 atm | 50,662.5 kPa |
| 1000 atm | 101,325 kPa |