Free Dew Point Calculator
Dew point temperature from air temperature and humidity.
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Inputs
Result
Dew point
13.9°C
56.9°F
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Short answer
Dew point temperature from air temperature and humidity.
What is the Dew Point Calculator?
Dew point temperature from air temperature and humidity.
How does the Dew Point Calculator work?
Enter the inputs above and read the result.
Formula
Variables
a,b17.625, 243.04 (Magnus constants)
Explanation
Dew point is the temperature at which air becomes saturated and condensation begins.
Examples
Applications
Advantages
Limitations
Common mistakes
Tips
Related concepts
The Dew Point Calculator sits inside the Everyday & Utility Calculators hub, in the weather & environment cluster. Perceived conditions and environmental readings. Understanding the terms below makes the output easier to interpret and easier to compare against neighbouring measures.
Practical use cases and industry applications
Understanding Dew Point
Dew point temperature from air temperature and humidity. Within everyday & utility calculators, dew point belongs to the weather & environment cluster, where it shares terminology and assumptions with closely related tools.
Learning how dew point is calculated
Dew point is the temperature at which air becomes saturated and condensation begins. Working through the variables one at a time — a,b — makes the result reproducible by hand and easier to sanity-check.
Using dew point to make a decision
Because outputs depend on the assumptions you enter, run more than one scenario before committing to a figure.
How dew point compares with related measures
apparent temperature, humidity, exposure all describe adjacent aspects of weather & environment. Comparing this calculator's output against those measures — using the related tools listed on this page — prevents a single metric from being read in isolation.
Frequently asked questions
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