Electricity Cost Calculator — Free Online Tool
Use Electricity Cost Calculator free online — runs entirely in your browser, no data sent to servers. No sign-up required.
Electricity Rate
EU average ≈ €0.28–0.35/kWh
Quick add appliance
Appliances
NameWattsHours/day
Daily Cost
0.12
Monthly Cost
3.60
12.00 kWh
Annual Cost
43.80
Formula: kWh = Watts ÷ 1000 × Hours
Cost = kWh × price per kWh · Find your tariff on your electricity bill.
Frequently Asked Questions about Electricity Cost Calculator
- Is Electricity Cost Calculator completely free to use?
- Yes, Electricity Cost Calculator is 100% free with no sign-up, no watermarks, and no usage limits.
- Is my data private?
- Electricity Cost Calculator runs entirely in your browser — no data is ever sent to our servers. Your content stays on your device.
- Does it work offline?
- Once the page has loaded, Electricity Cost Calculator works fully offline in your browser — no internet connection is required.
- How accurate are the results?
- All calculations use standard, well-established formulas and are accurate to at least 4 decimal places. Results are for guidance.
- Does Electricity Cost Calculator work on mobile and tablet?
- Yes, Electricity Cost Calculator is fully responsive and works in all modern browsers on desktop, tablet, and mobile.
This tool runs entirely in your browser. No data is ever sent to our servers.