Electricity Cost Calculator

kWh and cost per day, month and year from wattage and tariff.

Input Parameters

Power (W)

Tariff per kWh

Hours per day

Days per month

Cost / months

480.0 kWh / months · 864 / years

Energy16.00 kWh/ days

Cost2.4/ days

Cost864/ years

175 available

Annuity and differentiated monthly installments, interest breakdown, and amortization schedule.

Calculate PITI (Principal, Interest, Taxes, Insurance), PMI, and accelerated payoff savings.

Visualize compound growth with recurring deposits, annual rate, and investment horizons.

Add or extract Value Added Tax (VAT) with international country presets.

Analyze profitability and percentage return on business capital and investments.

Gross to net salary with income tax, social contributions and deductions, monthly and annual.

Estimate electricity use and cost from appliance wattage, daily hours and tariff — per day, month and year.

What is the kWh formula?

kWh = watts × hours / 1000; cost = kWh × tariff.

What uses the most power?

Heating, cooling and water heating dominate; a 2 kW heater running 8 hours burns 16 kWh daily.

How to save electricity?

Lower the thermostat a degree, switch to LED, and kill standby loads.