About ElectricityCost

ElectricityCost is a small, free calculator for a question every electricity bill raises and few answer: which of my appliances is actually costing me money, and how much?

Everything runs in your browser. There are no accounts, nothing you type is sent anywhere, and the same formula powers every page: kWh = watts × hours ÷ 1,000, multiplied by a rate you control.

How the numbers are chosen

Wattages are typical values for common models, labelled as typical on every page, with the range of common models shown beside them. Your appliance's nameplate overrides anything here. The default rate of $0.17/kWh is an editable example in the region of US residential averages published by the EIA; it is not your rate, and the site says so wherever the default appears. For appliances that cycle — fridges, air conditioners, water heaters — figures are averages across the cycle, and the pages explain that convention rather than burying it.

What this site is not

It is not a meter, an audit or a promise about your next bill. Fixed charges, tiered tariffs, taxes and your actual habits all move the real number; these estimates exist to rank appliances and size up changes before you make them. If a figure here ever drives a purchase decision, it is worth confirming the wattage with a plug-in energy monitor first — a day of measuring beats any table, this one included.

ElectricityCost is part of a small family of free single-purpose tools. The Pro tier mentioned in the footer is a plan, not a product: nothing is sold or charged anywhere on this site today.