Updated August 24, 2026
Electric Blanket Running Cost Calculator
Find out how much an electric blanket costs to run per night, month, and winter.
Live calculator
Calculate your actual running cost
Running this electric blanket for 8 hours a day, 7 days a week uses about 24.3 kWh each month.
Quick answer
How much does an electric blanket cost to run?
A 100 W electric blanket used for 8 hours a day, 7 days a week, consumes about 24.3 kWh per month. At £0.2611 per kWh (Ofgem GB illustration for Jul–Sep 2026), that is approximately £6.34 per month. Replace these example figures with the wattage and electricity rate from your appliance and bill.
What changes the real running cost?
Electric blankets use much less power than room heaters because they warm a small area directly. Thermostatic controls may reduce average consumption further.
Use the wattage printed on the controller or product label. For dual-control blankets, include both sides if both are used.
Assumptions used in this example
This page starts with 100 watts, 8 hours of use per day, and 7 days per week. Those defaults are only a practical starting point. Replace them with the number on your product label, energy label, smart plug, or electricity bill.
Example electric blanket costs
These examples use 100 W for 8 hours a day and 7 days per week.
| Electricity rate | Per hour | Per month | Per year |
|---|---|---|---|
| £0.20 / kWh | £0.02 | £4.85 | £58.24 |
| £0.26 / kWh | £0.03 | £6.34 | £76.03 |
| £0.35 / kWh | £0.03 | £8.49 | £101.92 |
Ways to reduce the cost
Start with changes that reduce active runtime without compromising safety or the job the appliance needs to do.
- Preheat the bed and reduce the setting later.
- Only heat the occupied side on dual-control models.
- Follow the manufacturer's care and safety instructions.
Estimate only. Actual consumption varies by model, setting, condition, temperature, duty cycle, and tariff. Use a plug-in meter or energy-label figure when accuracy matters.
FAQ
Electric blanket running cost questions
How do I calculate electric blanket running cost?
Divide the watts by 1,000 to get kilowatts, multiply by the hours used, then multiply by your electricity price per kWh. This page pre-fills 100 W, 8 hours per day, and 7 days per week as a starting example.
How much does an electric blanket cost per hour?
At 100 W and £0.2611 per kWh (an Ofgem GB cap illustration), the example cost is about £0.03 per hour while it is actively using that power. Change the rate field to match your own bill.
Why might my real electric blanket cost be different?
Use the wattage printed on the controller or product label. For dual-control blankets, include both sides if both are used.
Should I use rated watts or measured watts?
Rated watts are useful for a quick estimate, but measured wall power or an energy-label kWh figure is usually more accurate because many appliances cycle on and off or change power during use.
Does the calculator include standing charges, taxes, or demand charges?
No. The calculator estimates usage cost from kWh only. If your bill includes standing charges, taxes, delivery fees, or demand charges, add those separately.
Can I share my result?
Yes. Use the share or copy button after entering your wattage, hours, days, rate, and currency. The page stores those inputs in the URL so you can revisit the same estimate.