Calculators

Estimate indoor dew point from room temperature and relative humidity.

Check indoor relative humidity, estimate dew point and compare it with a window or wall surface temperature.

Estimate the electricity cost of running a dehumidifier in the UK using its wattage, runtime and your electricity unit rate.

Calculate the estimated cost per session, week, month and year for a heated clothes airer.

Compare editable electricity-cost estimates for a dehumidifier, heated airer and tumble dryer.

Compare weekly, monthly and annual drying costs across dehumidifier, heated airer, combined, heat-pump and condenser dryer methods.

Estimate tumble-dryer electricity cost from rated power and cycle duration.

Estimate the electricity cost of running a heat-pump tumble dryer from its wattage, cycle time and your tariff.

Estimate the cost of running a portable electric heater by wattage and time.

Calculate electricity cost for almost any household appliance from watts, hours and your tariff.