Home
Calculator for electricity cost
Work out appliance energy use and cost from wattage, hours per day, days, quantity and the electricity rate wey you enter.
Add to workspaceYour numbers
Result dey update as you type; no Calculate button dey. All calculation dey run inside your browser.
Electricity cost for this period
—
—
How the result break down
| Value wey e get |
|---|
Cost for this period and one full year at the same daily use
The bars dey use the larger cost as their scale. The full-year bar assume say you use the appliance the same way every day. Na projection, no be forecast of your bill.
Energy and cost for different periods
| Period | Value wey e get |
|---|
Wattage, hours, rate and quantity remain the same. Na only the number of days dey change. We dey use the rate wey you enter throughout; we no model tiered or time-of-use prices.
Formula
Energy (kWh) = watts ÷ 1,000 × hours every day × days × number of devices. Cost = energy × price for each kWh.
Example wey show the calculation
Power 1,500 W, 4 hours per day, 30 days, 1 device, rate 0.80 per kWh (example rate you replace with your own): daily energy = 1,500 ÷ 1,000 × 4 = 6 kWh, so period energy = 6 × 30 = 180 kWh and cost = 180.00 × 0.80 = 144.00. Daily cost na 4.80. Rate here na only example default — your bill actual rate na wetin matter.
Where e fit work and limits
Standby power, duty cycles (appliances wey cycle on and off), tiered rates, taxes, demand charges and time-of-use pricing not modelled: single flat rate applied to all energy. If your appliance cycle, enter average power draw, not peak wattage. No rate presented as market average — default rate na example to replace.
Questions wey people dey ask often
How the electricity cost calculator dey work?
Cost = watts ÷ 1,000 × hours per day × days × device count × price per kWh. Kilowatt-hour (kWh) na 1,000 watts used for one hour.
Which rate I suppose enter?
Per-kWh price from your own bill or tariff, including only wetin you want estimate to cover. If your bill add taxes or fixed charges separately, this estimate no go match bill total.
Wetin about standby power?
Standby power no dey inside unless you add am. You fit add standby watts for the hours wey the device remain plugged in, or calculate standby use separately.
My appliance dey switch on and off — which power I enter?
Use the average power draw for the hours wey you enter, no be the highest wattage on the label. A fridge wey the label show 150 W fit average much less throughout the day.
Why my bill differ from this estimate?
Tiered rates, time-of-use prices, fixed daily charges, taxes and other appliances on the same bill no dey inside this calculation for one appliance.
CalcMintly dey store values wey I enter?
No. This calculation dey run locally inside your browser; values wey you enter no dey reach any CalcMintly database.
Other tools wey relate to dis
- Calculator for fuel cost — fuel expense for trip from distance, fuel use and price
- Calculator for renting or buying home — renting and buying cash flows during the time wey you hold home
- Cost of subscriptions wey you no use — yearly waste from subscriptions wey you no dey use well
Results na estimates; dem no replace advice from qualified professional.