Dew Point Calculator
Compute the dew point using the Magnus formula from air temperature and relative humidity.
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Result
Formula
Td = b·γ ÷ (a − γ), γ = ln(RH/100) + a·T/(b+T), a = 17.62, b = 243.12
About this calculator
The UTIQO Dew Point Calculator computes the dew point temperature from air temperature and relative humidity using the Magnus formula. It helps users understand moisture in the air, which is important for comfort, condensation risk, and weather forecasting.
How to use
- 1
Enter the air temperature in °C in the Temperature field.
- 2
Enter the relative humidity as a percentage (0–100) in the Relative humidity field.
- 3
Click Calculate to see the dew point and comfort level.
Frequently asked questions
What is dew point?
Dew point is the temperature to which air must be cooled (at constant pressure and moisture content) for water vapor to condense into liquid dew. It is a direct measure of atmospheric moisture.
How is dew point different from relative humidity?
Relative humidity is the ratio of current moisture to the maximum moisture air can hold at a given temperature, expressed as a percentage. Dew point is an absolute measure of moisture; it does not change with temperature unless moisture is added or removed.
Why is dew point important?
Dew point affects human comfort, formation of dew and frost, condensation on surfaces, and the likelihood of precipitation. High dew points indicate humid conditions that can feel uncomfortable and increase the risk of mold and corrosion.
Please note: Results are estimates for general information only and are not professional or medical/financial advice.