Calculate your expected electricity cost per day, month, and year from your kWh usage and price per kWh, with an optional weekday/weekend breakdown.
📂 Energy & Home CalculatorsEnter your average daily electricity usage in kilowatt-hours (kWh) and your price per kWh, then press Calculate. If your usage differs noticeably between weekdays and weekends, tick the advanced option and enter both figures instead — the calculator will build a weighted daily average from five weekdays and two weekend days. No sign-up required, and nothing is sent anywhere — everything runs in your browser.
This tool converts your electricity usage into a clear daily, monthly, and yearly cost. The core calculation is simple — usage in kilowatt-hours multiplied by your price per kWh gives the cost for that period — but most people only know one of the two numbers well. The optional advanced mode lets you separate weekday usage (when people are often out at work or school) from weekend usage (when appliances like air conditioning, cooking, and entertainment devices tend to run longer), producing a more realistic average than a single flat daily figure.
A kilowatt-hour (kWh) is the standard unit utilities bill you for: it's the energy used by a 1,000-watt appliance running for one hour, or equivalently a 100-watt bulb running for ten hours. Your monthly electricity bill is essentially your meter's total kWh reading multiplied by your utility's price per kWh, plus any fixed fees, taxes, or tiered-rate adjustments the utility applies on top.
Averaging a single “daily usage” figure works well for a rough estimate, but real households rarely use exactly the same amount of electricity every day. Weekday usage often drops because people are away from home during work or school hours, while weekend usage tends to rise from more time spent cooking, doing laundry, running air conditioning, or using entertainment devices. The weekday/weekend split in the advanced mode captures that pattern with just two numbers instead of requiring a full day-by-day log.
This calculator intentionally keeps things simple and transparent: it does not guess your specific utility's tiered pricing, time-of-use rates, or fixed monthly charges, because those vary enormously by country, provider, and even season. For a bill that must match your utility's invoice exactly, treat this tool's output as a close estimate and confirm the final tiered or time-of-use pricing details directly from your provider's own rate schedule.
It's printed on your electricity bill, usually labeled as the rate or tariff per kWh. If your utility uses tiered pricing, use the rate that applies to your typical usage level for the closest estimate.
Many households use noticeably more electricity on weekends, when people spend more time at home cooking, doing laundry, or running air conditioning. Splitting the two figures produces a more accurate weekly average than a single flat daily number.
No — it calculates the pure energy cost from your usage and rate. Most utility bills add fixed service charges, taxes, or tiered-rate adjustments on top of the base energy cost, so your actual bill will likely be somewhat higher.