Enter total energy consumption in kWh for the period you care about (e.g. a month from your meter) and the effective price per kWh from your utility bill or plan summary. The tool returns a simple product. Many real bills add flat fees, tiered rates, and taxes, so treat this as a baseline estimate.
Only kWh × price per kWh. Standing charges, time‑of‑use blocks, taxes, and rounding on the bill are not modeled; kWh may be zero (cost 0).
This calculator uses plain decimal numbers. If a result looks wrong, check whether you used a comma instead of a dot (or vice versa) where the field expects one.