Energy Bill Math

Whole-home costs

Home Electricity Bill Estimator

Estimate monthly and annual electricity charges using your household kWh, provider rate, and fixed monthly charges.

kWh

Use the total kWh from a recent bill.

$/kWh

Use the rate for the usage you are estimating. Tiered and time-of-use plans may require separate calculations.

$/month

Include service or customer charges that do not change with kWh.

Your estimate

Estimated monthly bill

$171.00

Estimated annual bill

$2,052.00

Monthly energy charge

$153.00

Fixed-charge portion

$18.00

This estimate excludes taxes, credits, demand charges, minimum bills, and rate tiers unless you include them in the values entered.

Runs in your browser Use your own utility rate

Calculation method

How this estimate is calculated

Monthly estimate = monthly kWh × electricity rate + fixed monthly charges
U.S. Department of Energy: Estimating Home Energy Use

Important assumptions

What can change the result

  • The entered rate applies to all kWh in the estimate.
  • Fixed charges are entered separately because reducing kWh may not reduce them.
  • Taxes, credits, demand charges, minimum bills, and tiered or time-of-use pricing are not modeled automatically.

For the most useful estimate, use measurements from a plug-in energy monitor, connected charger, vehicle dashboard, or product energy label whenever available.

Improve your inputs

Related calculators