A familiar situation
Schätzen Sie Luftfeuchte und mögliche Kondensation aus Temperatur und relativer Feuchte.
How to use this calculator
- Enter air temperature, relative humidity.
- Select Calculate to see the answer and its breakdown.
- Keep a scenario, change an input and compare the results.
Use consistent units and check the assumptions below before applying the result.
How dew point is calculated
Estimate dew point from air temperature and relative humidity with the Magnus approximation. The result represents the temperature at which air becomes saturated under the model; indoor surfaces, pressure, and measurement error can affect condensation in practice. At 20°C and 50% RH, dew point is about 9.3°C. The calculation validates each input and keeps its stated units explicit. It is a practical indicator of moisture content and condensation potential. This is an estimate for the stated assumptions; confirm measurements and any applicable professional or local standards before relying on it.
Magnus approximation: dew point = bγ ÷ (a − γ)At 20°C and 50% RH, dew point is about 9.3°C.
Assumptions & useful context
The result depends on the values you enter and the method described above. Displayed numbers may be rounded; calculations use the unrounded values. Check that this model matches your situation before relying on it.
Frequently asked questions
What does dew point tell me?
It is a practical indicator of moisture content and condensation potential.
Is it exact?
No. It uses an approximation and depends on accurate temperature and humidity readings.