Electricity Bill Calculator
Estimate your power bill from kWh usage and unit rate.
Frequently Asked Questions
How is an electricity bill calculated?
Multiply the kilowatt-hours used by the per-unit rate, add any fixed service charge, then apply taxes or levies. Tiered tariffs charge different rates for different usage bands, which this flat-rate estimate simplifies.
What is a kWh?
A kilowatt-hour is one kilowatt of power used for one hour. A 100-watt bulb running for 10 hours uses exactly 1 kWh. Your meter counts these units over the billing period.
How can I lower my bill?
The biggest wins are usually heating and cooling, water heating and old appliances. Compare your daily kWh before and after changes to see which habits actually move the meter.
Is the Electricity Bill Calculator free, and is my data private?
Yes. It is completely free and every calculation runs locally in your browser, so the numbers and dates you enter are never uploaded, stored, or shared with anyone.
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