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Electricity Bill Calculator

Use this electricity bill calculator to turn monthly kWh and your utility rate into a simple bill estimate.

Live calculator

Electricity bill

Estimated monthly bill$174.72

$153.00 energy charge before fees and taxes.

Effective rate20.56 cents/kWh

Total bill divided by monthly kWh.

12 month total$2,096.64

Monthly bill multiplied by the selected months.

Electric bill breakdown

Energy charge plus fixed fees and taxes.

PartEstimate
Energy charge$153.00
Fixed fee$15.00
Taxes and surcharges$6.72
Monthly bill$174.72

Utility estimates depend on local rates, fixed fees, taxes, runtime, billing period, and household usage. Compare against the actual bill before settling up.

Formula

Electricity bill formula

Bill = monthly kWh x rate per kWh + fixed fees + taxes and surcharges

Some utilities also use delivery charges, tiered rates, demand charges, or time-of-use pricing.

How to use

Steps

  1. Enter monthly kWh from your electric bill or meter estimate.
  2. Enter the energy rate in cents per kWh.
  3. Add fixed monthly fees and estimated taxes or surcharges.
  4. Review the monthly estimate, effective rate, and multi-month cost.

Example

Sample calculation

Monthly usage850 kWh
Energy rate18 cents/kWh
Fixed fee and taxes$21.72
Estimated bill$174.72

Calculator use

Best for

  • Estimating home utility cost, shared bills, appliance usage, or service charges before splitting or budgeting.
  • Testing usage changes such as shorter showers, different appliance cycles, rate changes, or roommate shares.

Before relying on it

Check first

  • Leaving out fixed service fees, tiered rates, taxes, delivery charges, minimum bills, seasonal rates, or billing-period length.
  • Using appliance labels, averages, or old bills without checking actual runtime, local rates, and household usage.
  • Splitting a bill without agreeing whether fixed fees, shared rooms, guests, or unequal usage should be weighted.

Details

What to know before using the result

Usage inputKilowatt-hours

Electric bills usually charge for energy in kilowatt-hours, not watts. Use monthly kWh from your bill when possible.

Effective rateTotal bill / kWh

Fixed fees and taxes can make your effective cents per kWh higher than the advertised energy rate.

Rate limitsSimple model

The calculator does not model tiered pricing, demand charges, seasonal rates, or time-of-use schedules.

Source notes

References used for this calculator

U.S. Energy Information AdministrationExplains watts, watthours, and kilowatt-hours as common electricity measurement units.U.S. Energy Information AdministrationExplains that electricity prices vary by generation, transmission, distribution, fuel cost, weather, and regulations.

Benchmarks

How to read the result

500 kWh/mo: Lower usage.

Smaller homes, mild weather, and efficient appliances may land near or below this planning range.

800 - 1,200 kWh/mo: Moderate usage.

A useful scenario range for many household budgets, depending heavily on climate and heating or cooling.

Fixed fees: Can matter.

A low-usage home may still have a meaningful bill because of fixed monthly charges.

Calculator accuracy

Methodology and assumptions

Formula, inputs, limitations and review record
Formula

Bill = monthly kWh x rate per kWh + fixed fees + taxes and surcharges

Inputs used

Monthly kWh, Cents per kWh, Fixed fee, Taxes, Months

Limitations

Utility pages use visible usage and rate assumptions. Actual bills may include tiers, service fees, delivery charges, taxes, minimums, seasonal rates, and provider-specific rules.

Review record

Catalog QA baseline on June 6, 2026. This date marks the catalog-wide automated and editorial QA baseline, not a tool-specific expert review.

Cite this page

Toolkit Shelf. Electricity Bill Calculator. https://toolkitshelf.com/tools/electricity-bill-calculator

FAQ

Common questions

How do I calculate my electricity bill?

Multiply monthly kWh by your rate per kWh, then add fixed fees, taxes, and surcharges.

What is kWh on an electric bill?

A kilowatt-hour is 1,000 watts used for one hour. Electric bills commonly charge for energy in kWh.

Why does my bill differ from this estimate?

Utilities may use tiered rates, delivery charges, taxes, demand charges, time-of-use pricing, or seasonal rates that this simple calculator does not model.