Atmospheres to kPa Converter
Quick answer: To convert atmospheres to kPa, multiply by 101.325. For example, 10 atm is 1,013.25 kPa. One standard atmosphere equals 101.325 kPa.
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Use the Atmospheres to kPa Converter
Atmospheres to kPa formula and what each symbol means
kPa = atm × 101.325
| Symbol | Meaning |
|---|---|
| atm | Standard atmosphere |
| kPa | Kilopascal |
Atmospheres to kPa examples
1 atm
1 atm × 101.325 = 101.325 kPa.
10 atm
10 atm × 101.325 = 1,013.25 kPa.
100 atm
100 atm × 101.325 = 10,132.5 kPa.
Atmospheres compared with kPa
One atm is 101.3 times as large as one kPa, so your number gets bigger when you convert atmospheres to kPa and smaller when you convert back. If the answer is not larger than what you typed, you divided instead of multiplying.
About atmospheres and kPa
Standard atmosphere (atm): Standard atmosphere, exactly 101,325 pascals. Kilopascal (kPa): 1,000 pascals.
Where atmospheres to kPa conversions are used
Tyre pressure is shown in psi, bar or kPa, depending on the vehicle and country. Weather maps use hectopascals or millibars, and altitude and diving use bar or atmospheres.
How to calculate Atmospheres to kPa step by step
- Enter the value in atm (the starting unit).
- Multiply by 101.325, because 1 atm = 101.325 kPa.
- The product is the value in kPa. To go back, divide by 101.325 or multiply by 0.009869233.
Popular pressure conversions
How to read your Atmospheres to kPa result
Quick estimate: multiply by about 100 to get kPa from atmospheres; this is within 1.4% of the exact factor. The pascal is the SI unit, but gauges use bar, psi, atmospheres or mmHg depending on the field.
| ATMOSPHERES | KPA |
|---|---|
| 1 | 101.325 |
| 2 | 202.65 |
| 5 | 506.625 |
| 10 | 1,013.25 |
| 20 | 2,026.5 |
| 50 | 5,066.25 |
| 100 | 10,132.5 |
| 1,000 | 101,325 |
kPa to Atmospheres: quick table
| KPA | ATMOSPHERES |
|---|---|
| 1 | 0.009869233 |
| 5 | 0.04934616 |
| 10 | 0.09869233 |
| 25 | 0.2467308 |
| 50 | 0.4934616 |
| 100 | 0.9869233 |
| 250 | 2.467308 |
| 500 | 4.934616 |
Common mistakes when calculating Atmospheres to kPa
- Treating gauge pressure and absolute pressure as the same: absolute pressure equals gauge plus atmospheric pressure.
- Dividing when you should multiply: from atm to kPa multiply by 101.325; from kPa to atm divide by 101.325.
Atmospheres to kPa FAQ
How many kPa are in 1 atm?
1 atm equals 101.325 kPa.
How many atm are in 1 kPa?
1 kPa equals 0.009869233 atm.
Is 1 atm = 101.325 kPa an exact conversion?
Yes. The standard atmosphere and the kilopascal are both defined exactly in SI terms, so the ratio has no measurement uncertainty; 101.325 is just that ratio shown to 7 significant figures.
What is a standard atmosphere (atm)?
Standard atmosphere, exactly 101,325 pascals.
How can I estimate atmospheres to kPa in my head?
Quick estimate: multiply by about 100 to get kPa from atmospheres; this is within 1.4% of the exact factor.
What is 15 atm in kPa?
15 atm = 1,519.875 kPa (since 15 × 101.325).
What is 75 atm in kPa?
75 atm = 7,599.375 kPa (since 75 × 101.325).
What is 300 atm in kPa?
300 atm = 30,397.5 kPa (since 300 × 101.325).
How many decimals should I keep when converting atm to kPa?
Match the precision of your original measurement. For example, 1,013.25 kPa rounds to 1,010 kPa at 3 significant figures; keep more digits only for engineering or scientific work.
More in Pressure converters
- Atmospheres to PSI Converter
- PSI to mmHg Converter
- Bar to Atmospheres Converter
- PSI to kPa Converter
- Bar to kPa Converter
- PSI to Bar Converter
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Method, review and disclaimer
Edited by: Hemant Kumar and Anjita Rai, founders of ToolsVault (SEO and content professional, not a licensed adviser). Method: this tool runs in your browser using the formula shown on this page; the numbers you enter are not sent to our servers. Sources: NIST SP 811, Appendix B.8: conversion factors, BIPM: the SI derived units