Kilopascals to Atmospheres Converter
Unit ConversionConvert kilopascals to standard atmospheres. 1 kilopascal is about 0.00986923 standard atmospheres, with a conversion table and the reverse conversion.
Atmospheres
Equivalent pressure in standard atmospheres
Found this calculator useful?
From Scratch To $10K/Month In 60 Days
This is a proven money making system that takes students by the hand to make at least $10,000 per month, every month. Students get 12 weeks of guided coaching in addition to the "MPS Super Funnel" and tools.
We value your privacy and promise not to sell or misuse your information. Here's our privacy policy.
Calculator Stats
Creators
Odeh Ahwal0people find this calculator helpful
Views
Helpful
Saved
Embeds
Unit Conversion calculators
Calculator Stats
Creators
Odeh Ahwal0people find this calculator helpful
Views
Helpful
Saved
Embeds
Unit Conversion calculators
Sponsored
SponsoredThis converter turns kilopascals into standard atmospheres (kPa to atm). Enter a value and the result updates as you type. 1 kilopascal is about 0.00986923 standard atmospheres.
1 kilopascal is exactly 1,000 pascals. 1 standard atmosphere is exactly 101,325 pascals, a reference value close to average sea-level air pressure. So 1 atm = 101.325 kPa, and converting kPa to atm is a single division by 101.325. Chemistry courses use both units, so this conversion comes up often in gas problems.
The result shows 0 for a negative entry, because absolute pressure, counted from a perfect vacuum, cannot be negative. The result is rounded to 6 decimal places.
How to Convert Kilopascals to Atmospheres
To convert kilopascals to standard atmospheres, divide by 101.325. For example, 200 kPa is about 1.973847 atm.
To go from standard atmospheres back to kilopascals, multiply atmospheres by 101.325.
Kilopascals to Atmospheres Conversion Table
Common kPa values converted to standard atmospheres, rounded to 6 decimal places.
| Kilopascals | Atmospheres |
|---|---|
| 10 kPa | 0.098692 atm |
| 50 kPa | 0.493462 atm |
| 80 kPa | 0.789539 atm |
| 100 kPa | 0.986923 atm |
| 101.325 kPa | 1 atm |
| 150 kPa | 1.480385 atm |
| 200 kPa | 1.973847 atm |
| 250 kPa | 2.467308 atm |
| 500 kPa | 4.934616 atm |
| 1,000 kPa | 9.869233 atm |
100 kPa or 101.325 kPa
Chemistry problems use two different standard pressures. The IUPAC Green Book recommends 1 bar (100 kPa), in use since 1982, while older texts use one atmosphere (101.325 kPa). 100 kPa is about 0.986923 atm, so the two differ by about 1.3%.
The Ideal Gas Law Calculator takes pressure in atmospheres, so convert kilopascals here first. Plant growers meet kPa in vapor pressure deficit, which the Vapor Pressure Deficit Calculator returns in kilopascals.
Frequently Asked Questions
What is 300 kPa in atm?
300 kPa is about 2.96077 atm.
How many kPa is 1 atm?
1 atm is exactly 101.325 kPa.
How do I convert atm to kPa?
Multiply atmospheres by 101.325. For example, 2 atm is 202.65 kPa.
Is the Kilopascals to Atmospheres factor exact?
The reverse direction is exact: 1 standard atmosphere equals exactly 101.325 kilopascals. In this direction the factor has no finite decimal form, so 1 kilopascal is about 0.00986923 standard atmospheres. The calculator uses the full value and rounds only the result it shows.
What happens if I enter a negative value?
It shows 0. Atmospheres here measure absolute pressure, which cannot be negative.
Spot a mistake? Tell us what's wrong.
Request a calculator. The most-requested ones get built first in our monthly batch.
Request a calculatorWant this calculator on your website?
Embed the Kilopascals to Atmospheres Converter on any site — no code needed. Customize colors, remove branding, and track usage.
SponsoredSponsored