Electricity Cost Calculator
Estimate electricity energy use and cost from device watts, hours/day, days, and price per kWh.
How to use
- Enter power W, daily hours, days, and price/kWh.
Capabilities and scope
The special runner converts watts to kilowatts and derives period kWh and cost, with supporting projections.
How it works
energyKWh=powerW/1000×hoursPerDay×days; cost=energyKWh×rate.
Example
1000 W for 2 h/day over 30 days at 200/kWh is 60 kWh and 12,000.
Useful for
- Compare appliance electricity costs
Before you use it
- Tiered tariffs, fixed charges, tax, standby load, and duty cycle are excluded.
Frequently asked questions
Will it exactly match my utility bill?
No. It applies one entered per-kWh price to estimated energy use.