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Electricity-cost calculators for United States

Use US dollars, your own tariff, and device-specific operating models—without pretending one national average fits every household.

Billing context

Use the rate that changes with consumption.

Retail electricity prices vary substantially by state, utility, customer class, and tariff. Average revenue per kWh is useful context, but your bill's energy rate is the right calculator input.

How to enter your rate

Enter the per-kWh energy charge from your utility bill. For time-of-use service, run separate peak and off-peak scenarios.

Check U.S. Energy Information Administration electricity prices ↗

USD calculator

Start with any appliance.

The energy calculation works without a tariff. Enter your bill's per-kWh rate to convert energy into local cost.

01

Your scenario

Change any value. Results update instantly.

Active runtime accounts for cycling. Use 100% for devices that draw the rated power continuously.

02

Your reading

Planning estimate · based on your inputs
Estimated monthly costEnter your rate

Use the per-kWh energy charge from your latest electricity bill.

Per day—
Per active hour—
Per year—
Energy / month14.6 kWh

FormulakW × runtime × tariff

Month52 weeks ÷ 12

Data qualitySelf-entered estimate

Local high-intent tools

Built for United States

These pages combine the device model with local billing structure, a current source, and market-specific checks.

Local calculator

Air conditioner

Cooling cost changes sharply with climate zone, equipment efficiency, thermostat setting, and the utility rate that applies in your state.

Calculate local cost ↗Local calculator

EV charging

Home-charging economics vary by utility territory, charging schedule, battery size, and whether an EV or overnight time-of-use rate is available.

Calculate local cost ↗Local calculator

Pool pump

Long filtration schedules make pool pumps a material seasonal load, especially in warm states with high summer electricity prices.

Calculate local cost ↗

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Calculation standards

Visible inputs. Reproducible results.

WhoPowerCost Lab's research desk maintains the formulas, market notes, and worked examples.

HowEnergy, tariff, and behavioural assumptions stay separate so readers can replace one input without hiding the others.

WhyThe page exists to answer an operating-cost decision. Advertising never changes a formula, default, or recommendation.