UK running cost calculators
Work out what an appliance actually costs you, with your own wattage, hours and tariff. Every calculator is pre-filled with the Ofgem Energy Price Cap unit rate of 26.32p per kWh for 1 October – 31 December 2026, and shows the assumptions behind the number.
Rates correct as of 5 October 2026.
Dehumidifier Running Cost Calculator
Work out what your dehumidifier costs to run in the UK — per hour, day, week, month and winter — at the current Ofgem price cap rate of 26.32p/kWh.
Open the calculatorHot Tub Running Cost Calculator
How much does your hot tub cost to run? Enter your heater power, hours and tariff for a daily, weekly, monthly and yearly figure at 26.32p/kWh.
Open the calculatorAir Fryer vs Oven Cost Calculator
Compare what an air fryer and an electric oven cost to cook the same meal in the UK, and see what you would save over a week and a year at 26.32p/kWh.
Open the calculatorHeated Airer Running Cost Calculator
Work out what a heated clothes airer costs to run per load, week, month and winter in the UK at the current 26.32p/kWh price cap rate.
Open the calculatorPizza Oven Cost Per Pizza Calculator
Work out what each pizza costs you in fuel — gas bottle or electric — including the preheat, and compare it with a takeaway.
Open the calculatorRobot Vacuum Annual Cost Calculator
Add up what a robot vacuum really costs a year in the UK — charging, dock standby and replacement filters, brushes and bags — at 26.32p/kWh.
Open the calculatorDehumidifier Size Calculator
Answer four quick questions about your home, damp and washing to see what size dehumidifier you need (12L, 16L, 20L or desiccant), which models to shortlist and what it costs to run.
Open the calculatorEvery calculator estimates energy use from the figures you enter. Appliances cycle on and off in real use, so treat the results as a well-informed estimate rather than a meter reading. More on how I work these out is in how we review, and there are more questions answered in the FAQ.