Electricity Cost Calculator
The meter, priced — kilowatt-hours times your rate into the bill, the day, and the year, with your rate held against the national 18¢ average.
Electricity Cost Calculator
Results recalculate instantly on every keystroke. Nothing you type is transmitted.
What this result does not account for
- Prices the meter line — fixed customer charges ride on top
- kWh 0 to 10,000; rate 1 to 100¢; days 1 to 62
In short: 900 kilowatt-hours at 18¢ — the national average rate, at the typical home's usage — bills $162.00 a month, $5.40 a day, $1,944.00 a year. The rate is the number to argue with: the same house at Hawaii's 41¢ pays $369.00, at North Dakota's 11¢ pays $99.00.
Formula
bill = kWh × rate ÷ 100; day = bill ÷ days; year = bill × 12
An electric bill is one multiplication: the meter's kilowatt-hours times the rate your utility charges, and 2026's national residential average sits near 18¢ — from about 11¢ in North Dakota to 41¢ in Hawaii. Usage is behavior and weather; the rate is geography and regulation, which is why two identical houses can bill $99 and $369 for the same kilowatt-hours. Fixed customer charges ride on top of every bill; the meter line is the part usage can move.
Worked Example
- Enter the meter's kilowatt-hours and the days they cover.
- Enter your rate — the bill's fine print has it.
- Read the bill, the rate check, and the year.
Defaults: 900 kWh over 30 days at 18¢ — a $162.00 bill, $5.40 a day, $1,944.00 a year, right at the national rate.
Strengths & Limits Of This Model
Where this engine is strong
- The bill as one honest multiplication
- The rate held to the national 18¢
- The same house priced across states
Where it stops
- One month per run — seasonal swings price month by month
Practical Use Cases
Bill checks
the meter times the rate, exactly
Moving
the same house, priced by state
Solar math
the baseline a roof must beat
Methodology & Editorial Standards
Computation runs in IEEE-754 double precision at full internal precision; rounding to two decimal places occurs strictly at the display layer, so no cumulative drift enters the result. All monetary outputs use accounting presentation — grouped thousands, two decimals, negatives in parentheses — so figures can be transcribed directly into a model or working paper. Division-by-zero and out-of-domain inputs return an em-dash rather than a misleading number.
This engine was reconciled against an independent reference implementation and hand-verified for the worked example above before release. Our full five-stage review process is published on the About Us page.
Disclaimer. This calculator is provided for informational and modelling purposes only and does not constitute financial, tax, legal, medical, or engineering advice. Verify all figures with a qualified professional before acting on them.
Electricity Cost Calculator — 8 Expert FAQs
8 analyst-written answers to the questions practitioners actually ask — optimised for voice and answer-engine retrieval.
What is the average electric bill?
The typical US home uses about 900 kilowatt-hours a month at a national average rate near 18¢ — roughly $162.00 before fixed charges, which lands most bills between $130 and $180. The page prices YOUR meter times YOUR rate.
What does electricity cost per kWh?
The 2026 national residential average runs 17.5¢ to 18¢, from about 11¢ in North Dakota and Washington to 41¢ in Hawaii. The bill's fine print states yours exactly — enter it and the bench card says where you sit.
Why do identical houses bill so differently?
Rate is geography: state grids, regulation and fuel mix set it, not the house. The same 900 kWh bills $99.00 in cheap states and $369.00 in Hawaii — usage is the lever you control, rate is the one you move away from.
Are fixed charges in this number?
No — this page prices the meter line. Utilities add a fixed customer charge (often $10-$20) that usage cannot move, which is why tiny apartments sometimes pay more per kilowatt-hour than houses.
How do I find my real rate?
Divide the bill's supply plus delivery charges by the kilowatt-hours used — or read the ¢/kWh the bill prints. Headline supply rates hide delivery; the division is the honest number to enter here.
Does seasonal use wreck the average?
It bends it: AC months run 1,500+ kWh, shoulder months 600. Price each season with its own meter reading — the year card multiplies one honest month, so feed it a typical month, not the worst one.
What is the cheapest way to cut the bill?
The meter first: heating, cooling and the water heater are most of it, and the appliance energy page prices each one. The rate second — time-of-use plans and competing suppliers move it more than any new bulb ever will.
How does solar change this math?
A roof is a rate play: it replaces 18¢ kilowatt-hours with financed ones. Price the meter line this page computes as the ceiling a solar quote has to beat — and remember the fixed charge survives every panel.