Legal

Terms of use

CostToRun provides free educational calculators at runningcostcalculator.com. By using the site you agree to these terms.

Estimates only

Results are estimates, not a bill, tariff, or financial, engineering, or safety advice. Actual costs depend on your appliance, settings, duty cycle, taxes, standing charges, and unit rate. Enter the rate from your own bill.

Example rates

Preset wattages and any example unit rates (including an Ofgem price-cap illustration for Great Britain) are starting points. They are not a quote from an energy supplier.

Acceptable use

Do not misuse the site, attempt to disrupt it, or scrape it in a way that harms service for others. You may link to public calculator pages. You may not copy the site as your own product.

Liability

The calculators are provided as-is. We are not liable for decisions made using the estimates, including tariff switches or appliance purchases.

Contact

Questions: see the contact page.