What changes the answer
The average price reported by EIA is a revenue-per-kWh statistic, not necessarily the marginal rate on a household tariff. Fixed customer charges and demand or time-of-use rules can change the bill.
Separate the rate, fees and time-of-use periods before comparing a US electricity decision.
The average price reported by EIA is a revenue-per-kWh statistic, not necessarily the marginal rate on a household tariff. Fixed customer charges and demand or time-of-use rules can change the bill.
Home projects commonly use feet, inches, square feet, cubic yards, US gallons and pounds. Every project tool keeps the selected unit visible through the calculation.
Find an effective all-in bill rate without mistaking it for the next-kWh rate.
Compare flat and time-of-use energy charges.
Estimate EV charging, heat-pump and appliance-label costs from local inputs.
Translate project quantities without mixing US customary and metric units.
Currency symbols are presentation only; enter the current plan, label or project values that apply to you.
Estimate appliance energy and cost in your own currency from label watts, runtime and your electricity rate
Open calculator Working shownEnergy bills & appliancesEffective Electricity Bill Rate CalculatorSeparate fixed charges from energy charges and calculate both all-in and usage-only bill rates
Open calculator Working shownEnergy bills & appliancesElectricity Bill Change ExplainerExplain why an electricity bill changed by separating billing days, daily usage, effective usage rate and fixed charges
Open calculator Working shownEnergy bills & appliancesTime-of-Use Electricity Plan ComparisonCompare peak and off-peak energy charges with a flat-rate plan using the same electricity use
Open calculator Working shownEnergy bills & appliancesHome EV Charging Cost CalculatorEstimate wall energy, charging cost and cost per distance with visible charging losses
Open calculator Working shownEnergy bills & appliancesHeat Pump vs Resistance Heating CalculatorCompare electricity needed for the same useful heat using an editable heat-pump COP
Open calculator Working shownEnergy bills & appliancesAppliance Label Annual Cost CalculatorTurn the annual kWh on an official appliance label into annual and multi-year energy cost
Open calculator Working shownSolar, battery & backupSolar Self-Consumption Value CalculatorSeparate solar electricity used at home from exports and value each with its own rate
Open calculator Working shownSolar, battery & backupHome Battery Energy-Shift CalculatorEstimate deliverable shifted energy and gross rate-spread value after round-trip losses
Open calculator Working shownSolar, battery & backupGlobal Battery Backup Runtime CalculatorEstimate backup runtime from voltage, amp-hours, usable discharge, conversion efficiency and load
Open calculator Working shownHome projectsConcrete Volume Calculator — Metric & US UnitsCalculate rectangular concrete volume in cubic metres or cubic yards with explicit unit conversion and waste
Open calculator Working shownHome projectsPaint Quantity Calculator — Litres & GallonsEstimate paint from wall dimensions, openings, coats and the exact product coverage
Open calculator Working shownHome projectsFlooring & Tile Quantity CalculatorEstimate floor area, pieces and packs using metric or imperial dimensions and a visible waste allowance
Open calculator Working shownProperty & area unitsInternational Property Area TranslatorConvert standard property-area units while keeping the exact factor and both unit labels visible
Open calculatorThese links help verify tariffs, labels, schemes, measurements and rules. Their inclusion is not an endorsement.
U.S. Energy Information Administration
Explains why an average price statistic is not necessarily the rate applied to the next kWh.
Open official resourceU.S. Energy Information Administration
Official US electricity data and rate tables; calculator rates still come from the user's tariff.
Open official resourceU.S. Energy Information Administration
National household-energy research for context, not a substitute for a home's measurements.
Open official resourceU.S. Energy Information Administration
State-level electricity context and official data.
Open official resourceU.S. Environmental Protection Agency
Verify model energy information for eligible appliance categories.
Open official resourceFederal Trade Commission
Official label guidance; use the model's label value in cost scenarios.
Open official resourceNational Renewable Energy Laboratory
Estimate location-specific PV production before entering a solar-generation scenario.
Open official resourceU.S. Department of Energy
Independent home-efficiency guidance.
Open official resourceU.S. Department of Energy
Explains heat-pump operation; the calculator's COP remains user-entered.
Open official resourceU.S. Department of Energy
Current building-energy-code resources; not a structural design service.
Open official resourceNational Institute of Standards and Technology
Official SI measurement guidance used to distinguish units.
Open official resourceNational Institute of Standards and Technology
Verification reference for volume definitions and conversions.
Open official resource