Age calculator
Your exact age on any date, from your DOB.
Open toolElectricity cost calculator
Estimate an appliance’s energy cost.
Your input stays in this browser. No account needed.
THE QUICK GUIDE
How to use electricity cost calculator
Enter the labelled values, then process it. Copy or download the result.
How it works
Energy = watts ÷ 1000 × hours × days; cost = energy × price per kWh.
A useful example
Power (watts): 100; Hours used per day: 8; Number of days: 30; Price per kWh: 50 → Energy: 24 kWh Cost: 1,200
Good to know
Use consistent units and currency. These are general calculations; verify important results.