Home energy & efficiency

Appliance Energy Usage Calculator

Pick a common household appliance and see what it's actually costing you per month, based on typical wattage and usage patterns.

1. Appliance & Usage

Appliance

Power Draw (W — auto-filled, edit if you know the real number)

Hours Used Per Day

Your Electricity Rate ($/kWh)

2. Estimated Cost

kWh × rate

MONTHLY COST

$—

YEARLY COST

$—

Note: Typical wattage varies by make, model, and age — check your appliance's nameplate for its exact rating.

Tips for a more accurate number

A plug-in power meter gives you the real wattage for any specific appliance, rather than a typical estimate.
Appliances with compressors or heating elements (fridges, A/C, dryers) cycle on and off — "hours used" should reflect actual running time, not just time plugged in.
Standby/phantom power from electronics left plugged in adds up — check our Whole-Home Energy Load Calculator for the bigger picture.

Cost per hour at typical rates

Ontario-style rate of ≈ 13.3¢/kWh — adjust for your actual bill rate.

Appliance	Power	¢ per hour	$ per hour
Portable space heater	1,500 W	20.0¢	$0.20
Window air conditioner	900 W	12.0¢	$0.12
Dehumidifier	500 W	6.7¢	$0.07
Refrigerator (average draw)	150 W	2.0¢	$0.02
LED bulb	10 W	0.13¢	$0.0013
Electric dryer	3,000 W	40.0¢	$0.40
Level 2 EV charger	7,200 W	96.0¢	$0.96

kWh = watts × hours ÷ 1,000. Check your utility bill for your exact rate (TOU rates vary by time of day).

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