Smart Device Energy Consumption Calculator
Provide device wattage, daily hours of use, and total days to estimate electricity consumption in kilowatt-hours.
Approximate energy usage; actual consumption may vary.
Examples
- 5 W for 24 h over 365 days ⇒ 43.8 kWh
- 10 W for 8 h over 30 days ⇒ 2.4 kWh
FAQ
How can I estimate cost?
Multiply the kWh result by your electricity rate.
Does standby power count?
Yes, include standby wattage if the device is always on.
Can I use decimals?
Yes, input fractional values for precise estimates.
Additional Information
- 1 kWh equals 1000 watt-hours.
- Useful for calculating the impact of smart speakers, routers, and other small devices.