Inputs
Results
Dew Point
9.3°C
If a surface falls to or below this temperature, condensation becomes possible.
Condensation Risk (at Surface Temp)
Medium
Medium
\u0394T (Surface - Dew Point)
+2.0°C
Smaller \u0394T means higher condensation risk. \u0394T \u2264 0\u00B0 indicates likely condensation.
Safe RH Ceiling (for this Surface Temp)
45% RH
Targeting at or below this RH helps reduce condensation risk on the selected surface.
How This Calculator Works
- This calculator uses a common dew point approximation (Magnus formula) suitable for typical indoor ranges.
- If you enter °F, calculations are performed in °C internally and converted back for display.
- Surface presets are only typical examples. If you can measure surface temperature, use that for best accuracy.
- For persistent condensation, also address ventilation, air leakage, and cold bridging.