Utilities & Bills
Appliance Energy Cost
Calculate yearly cost of running any appliance.
Find out how much each appliance adds to your electric bill based on wattage, daily usage, and your local rate.
Annual Cost
$328.50/year
- daily
- $0.900/day
- monthly
- $27.38/month
- kwh
- 6.00 kWh/day
Formula and method
Cost = (Watts × Hours / 1000) × 365 × Rate
Watts converted to kWh; multiplied by usage and electricity rate.
Worked examples
Space heater 1500W
- Wattage:
- 1500
- Hours Used Per Day:
- 4
- Rate ($/kWh):
- 0.15
Annual Cost: $328.50/year
Assumptions and limits
- Constant daily usage
This tool provides an educational estimate. Rules, rates and personal circumstances can change the answer. Review the assumptions before relying on a result. Report a correction.
Common mistakes to avoid
- Using nameplate watts vs actual draw — many devices run below max.
Frequently asked questions
Standby power?
Add 1-5W standby for always-plugged devices.