💷 Heating Cost Calculator
Enter a heater's power, how long you run it, and your energy rate to estimate the running cost — compare appliances and plan what heating will cost you this winter.
🧮 Estimate Your Running Cost
What is a Heating Cost Calculator?
It turns a heater's power and your usage into money. Enter the kilowatts it draws, the hours per day, the number of days, and your per-kWh rate, and it multiplies them into the total running cost — the figure that actually lands on your energy bill.
Use it to compare a plug-in space heater against central heating, decide whether that old fan heater is worth running, or budget for a cold snap. Change any input to see instantly how usage, rate, or a more efficient appliance changes the cost.
❓ Frequently Asked Questions
How does the heating cost calculator work?
It multiplies the heater's power in kilowatts by the hours you run it each day, the number of days, and your energy rate per kilowatt-hour. The result is the total running cost over that period, in whatever currency your rate is in.
Where do I find a heater's power rating?
It's on the appliance label or in the manual, usually in watts or kilowatts — divide watts by 1,000 to get kilowatts (a 2,000 W heater is 2 kW). Many electric heaters have switchable settings, so use the setting you actually run at.
Why is a heat pump so much cheaper to run?
A resistive electric heater turns one unit of electricity into one unit of heat. A heat pump moves heat rather than generating it, delivering three to four units of heat per unit of electricity, so its running cost is roughly a third to a quarter of what this calculator shows for the same heat output. Divide the figure by the pump's coefficient of performance to compare.
Are these figures exact?
They're an estimate based on steady running at the values you enter. Real bills vary with thermostat cycling, standing charges, tariff changes, and how cold it gets, so use the result to compare options and budget rather than as a guaranteed bill.