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Electricity Bill Calculator

W
$
Monthly cost
$30.60
Per day
$1.02
Per year
$372.30

HI data benchmark

The estimate above is personalized to your inputs. These are HI's independent market reference figures from its data layer — each shown with its source and confidence.

WhereMeasureValueConfidence
US national · Residential electricityAvg (USD/kWh)$0.18/kWhVerified
AL · Residential electricityAvg (USD/kWh)$0.16/kWhVerified
AK · Residential electricityAvg (USD/kWh)$0.26/kWhVerified
AZ · Residential electricityAvg (USD/kWh)$0.16/kWhVerified
AR · Residential electricityAvg (USD/kWh)$0.13/kWhVerified
CA · Residential electricityAvg (USD/kWh)$0.32/kWhVerified
CO · Residential electricityAvg (USD/kWh)$0.17/kWhVerified
CT · Residential electricityAvg (USD/kWh)$0.30/kWhVerified

Showing 8 of 52 rows — see the full dataset.

Dataset: US Electricity Price by State — see data products

v0 values are modeled estimates pending verified collection. Educational use, not financial advice.

Estimate what an appliance costs to run from its wattage, hours of use, and your rate.

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How to use this calculator

  1. Find the appliance's wattage on its label or nameplate.
  2. Enter how many hours a day it runs.
  3. Enter your electricity price per kWh from a recent bill.
  4. Read the daily, monthly, and yearly running cost.

Formula

Cost = (Watts ÷ 1000) × hours × rate
  • Watts ÷ 1000 — power in kilowatts
  • hours — hours of use per day
  • rate — price per kWh

Worked example

A 1,500 W space heater running 4 hours a day at $0.17/kWh costs about $1.02 a day — roughly $31 a month, or $372 over a year.

Frequently asked questions

Where do I find an appliance's wattage?

On its label or nameplate, often near the power cord or on the back.

What's a typical price per kWh?

U.S. residential averages roughly $0.16–0.18 per kWh, but it varies by state and plan.

Does standby power count?

Devices on standby draw a few watts continuously; for accuracy, add their idle hours separately.

What is a kWh?

A kilowatt-hour is 1,000 watts used for one hour — the unit utilities bill by.

How can I cut the cost?

Reduce run time, use efficient models, and shift use to off-peak hours if your plan varies.

Related calculators

JP
Jordan P. · Author
Reviewed by Cara M., Licensed Contractor · Updated 2026-06-03
Sources
Embed this calculator
Includes a “Powered by hiinformation” link.
View answer.json (AI feed)
{
  "tool": "electricity-bill",
  "question": "How does the Electricity Bill Calculator work?",
  "answer": "Estimate what an appliance costs to run from its wattage, hours of use, and your rate.",
  "formula": "Cost = (Watts ÷ 1000) × hours × rate",
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      "unit": null
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    {
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  "updated": "2026-06-03",
  "methodology": null,
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