Work out how much your appliances cost to run. Enter the wattage, how many hours a day you use them, and your electricity rate to see monthly and yearly costs. Good for spotting which appliances are costing you the most.
UK average is around £0.24-£0.34/kWh. Check your bill for your exact rate.
| Appliance | Qty | Hours/Day | Wattage | Monthly Cost | Annual Cost | Action |
|---|---|---|---|---|---|---|
| No appliances added yet. Start by adding one above. | ||||||
| Total | £0.00 | £0.00 | ||||
The cost is calculated using: Cost per day = (wattage / 1000) × hours per day × unit cost (£/kWh). Monthly cost = daily cost × 30, and annual cost = daily cost × 365.
As of 2026, it's around £0.24-£0.34 per kWh, but this varies by supplier, tariff, location, and payment method. Check your bill for your exact rate.
Check the label on the back or bottom of the appliance. It'll show watts (W) or amps (A). If it shows amps, multiply by 230V (UK voltage). So 5A = 1,150W. The calculator has typical wattages for common appliances.
Yes, it saves to your browser's local storage automatically. Your data stays on your device and isn't sent anywhere.
High-wattage heating items like electric ovens, tumble dryers, heaters, and kettles. But fridges and freezers running 24/7 add up too, even with lower wattage.
It uses the standard formula energy companies use, so estimates are pretty close. Actual costs can vary with appliance efficiency and usage patterns. Use exact wattages and your real electricity rate for best accuracy.