Are the bands official?

No — they're approximate and need confirmation from your utility. Enter your actual rate for accuracy.

How do I find my kWh usage?

It appears on your monthly bill as a kWh or 'consumption' figure.

Use Global mode and enter the flat per-kWh rate from your bill.

Most countries use progressive bands — higher usage is priced at higher rates.

No, the calculation is entirely local.

Estimate your bill using approximate country-specific tariff bands.

Practical calculatorGeneral editable assumptionsGlobal-readyInteractive chart

Last updated: 2026-05-16

This calculator uses generic assumptions. Use advanced mode to override them for a more accurate result.

Source: default

Bill = Σ (Band kWh × Band Rate) + Fees

Are the bands official?: No — they're approximate and need confirmation from your utility. Enter your actual rate for accuracy.
How do I find my kWh usage?: It appears on your monthly bill as a kWh or 'consumption' figure.
What if my country isn't supported?: Use Global mode and enter the flat per-kWh rate from your bill.
Why does the bill rise so fast?: Most countries use progressive bands — higher usage is priced at higher rates.
Do you store my data?: No, the calculation is entirely local.

Results are estimates and not professional advice. Verify important decisions with a qualified professional.