Electricity Cost Calculator
Work out what your electricity costs — energy used times your tariff, plus the standing charge — in total and per day.
An electricity bill is two numbers: the energy you used times your tariff, plus the fixed standing charge. This calculator is that arithmetic, from your own figures.
Enter the kWh and your tariff; the bill follows.
Your results
Enter your measurements and press Calculate.
Quantities are rounded up to whole tiles, planks, boxes or bags, after the wastage allowance. Cost appears only when you enter a price.
Formula
All lengths are converted to a single unit before the calculation: 1 ft = 0.3048 m, 1 in = 25.4 mm, 1 ft² = 0.09290304 m², 1 yd² = 9 ft². Material quantities are rounded up — you cannot buy part of a tile, plank or bag.
How to use this calculator
- Enter the kWh used for the period.
- Enter your tariff per kWh.
- Enter the days and the daily standing charge.
- Read the energy cost, the total and the average per day.
Worked example
| Energy used | 350 kWh |
|---|---|
| Tariff | $0.15 per kWh |
| Energy cost | 350 × $0.15 = $52.50 |
| Standing charge | $0.50 × 30 days = $15.00 |
| Total | $52.50 + $15.00 = $67.50 |
| Average per day | $67.50 ÷ 30 = $2.25 |
Check it by hand: every step above uses the formula in the box. If your numbers match the example inputs but the calculator gives a different answer, please report it via the contact page.
Frequently asked questions
How do I find my kWh usage?
From your electricity bill or meter: the difference between two readings is the kWh used. Smart meters show it directly.
What is a standing charge?
A fixed daily charge for being connected, charged whether you use electricity or not. It is separate from the per-kWh tariff — this calculator adds both.
Why is my bill higher than this?
Because the tariff may vary by time of day, and taxes or levies may apply on top. This calculator is the energy + standing charge; check your bill for the rest.
Is this a quote?
No. It is an estimate from your own kWh and your own tariff — not a guaranteed bill. Your supplier's rates and charges decide the real bill.
Related calculators
Estimates only. Results are for planning. Measure twice, confirm box coverage and tile sizes on the packaging you buy, and follow the manufacturer's instructions. See the disclaimer.