Tools
Dew point calculator
Estimate indoor dew point with the Magnus formula. Use it to see whether cold glass or walls will run with condensation.
Surface mould-risk estimate
Compare estimated surface relative humidity with the conventional 80% threshold in EN ISO 13788.
Dehumidifier sizing estimate
Estimate litres/day from volume, how damp the space feels, and indoor laundry. Not a laboratory rating.
Dehumidifier running cost
kWh and euros from watts, hours and the unit price on your own bill. No invented tariffs.
Guided damp diagnosis
A short question path on where the problem appears, when, and whether it climbs from the floor. A working hypothesis, not a survey.
Home humidity log
Record temperature and relative humidity for two weeks. Dew point is calculated each day. Data stays on your device.