Electricity Bill Calculator
Quickly estimate your electricity bill using units (kWh) multiplied by your tariff. Toggle advanced mode to add fixed charges and tax/VAT.
If your bill covers a period other than 30 days, enter it here to scale results to a standard monthly amount.
How the Electricity Bill Calculator Works
This electricity bill calculator multiplies the number of energy units you consumed (kWh) by your tariff (price per kWh) to produce a base energy cost. In advanced mode you can add fixed monthly charges such as meter rent or service fees, and a tax or VAT percentage that will apply to the subtotal. The tool also scales values to a standard 30-day month to provide monthly and annual comparisons.
Simple formula: Cost = Units × Tariff. For many households and businesses this simple approach gives a quick estimate of the bill. In some regions electricity providers use tiered or slab pricing where the per-unit tariff changes with consumption; this tool does not model slab pricing by default but can be extended to do so.
Advanced options: add fixed monthly charges and tax/VAT percentage to mimic the structure shown on most utility bills. If your billing period is not 30 days enter the actual number of days to get accurate daily and monthly equivalents.
How to find your tariff: check your last electricity bill or your provider's website for the price per kWh. Tariff units vary by currency and region. If your bill shows tiered rates you can either calculate the cost per slab and sum them externally or extend this tool to accept multiple slabs.
Interpreting results: The calculator shows:
- Energy cost for the billing period (units × tariff).
- Optional fixed charges and tax amount.
- Monthly equivalent scaled to 30 days and an annual estimate.
- Average cost per day for budgeting.
This tool is ideal for households, renters, and small businesses to quickly estimate bills, compare tariffs, and plan energy budgets. For detailed billing analysis including slab pricing, time-of-use rates, or demand charges consider using an advanced billing model.
Frequently Asked Questions
What is a unit (kWh)?
A unit, or kilowatt-hour (kWh), is the energy used when consuming one kilowatt of power for one hour.
Where do I find my tariff?
Check your last electricity bill or your provider's website for the price per kWh. Tariff names and structures vary by region.
Does this handle slab or tiered pricing?
Not by default. This calculator uses a flat tariff. If you need slab pricing you can calculate each slab separately or I can add slab support.
Is my data stored?
No. All calculations occur locally in your browser and nothing is transmitted or saved.