Electric Blanket Running Cost Calculator
Instantly estimate the daily, weekly, and monthly electricity cost of using an electric blanket based on wattage, usage hours, and your specific energy tariff.
Calculate Your Electric Blanket Costs
Enter your electric blanket’s wattage, how long you use it, and your electricity rate to see a tailored estimate of your heating expenses.
Running Cost Estimator
Customise your usage details to see the breakdown
Check the label on your blanket for the exact wattage.
Check your latest energy bill. UK average is currently around 24p–28p.
Estimated Running Cost
Based on your usage and energy tariff
Typical Electric Blanket Running Costs
Estimated costs for running common electric blanket sizes for 8 hours, based on an average UK electricity rate of 28p per kWh.
| Blanket Size | Average Wattage | Cost Per Night (8 hrs) | Cost Per Month (30 nights) |
|---|---|---|---|
| Single | 60W | ~13p | ~£4.03 |
| Double | 100W | ~22p | ~£6.72 |
| King | 120W | ~27p | ~£8.06 |
| Super King | 140W | ~31p | ~£9.41 |
Electric Blanket Costs FAQ
Everything you need to know about the electricity expenses and efficiency of using an electric blanket.
On average, running a double electric blanket (100W) for 8 hours costs around 22p to 25p per night, assuming an electricity rate of 28p per kWh. Single blankets cost even less, typically around 13p to 15p per night.
Yes, significantly. Heating a single bed with an electric blanket for 8 hours costs roughly 15p–25p. Heating an entire bedroom with central heating for the same duration can cost £1.50 to £3.00 or more, making electric blankets a highly efficient “zone-heating” alternative.
Electric blanket wattage varies by size. A single blanket typically uses 60W, a double uses 100W, a king uses 120W, and a super king uses around 140W. Modern blankets also feature thermostats that cycle the power on and off, meaning they rarely draw their maximum wattage continuously.
Modern electric blankets with thermostatic controls will automatically reduce power once the desired temperature is reached, keeping running costs low even if left on all night. However, using a timer to turn it off after you fall asleep is the most cost-effective and safest approach.