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Phone charger: what does it cost to run?
Calculate the cost, compare common appliances, and get one practical saving idea — instantly.
Estimated monthly cost
$0.16$0.01 / day$1.97 / year
0.9 kWh used each month02 · Appliance-specific guide
How to estimate phone charger correctly
The 10 W and 3 h/day values are an editable example, not a claim about every model. This appliance is best treated as charging-session use.
What to verify
The printed adapter wattage is a maximum and charging power tapers near full. A USB power meter gives the best session total.
Formula
Power (W) ÷ 1,000 × active hours × electricity rate. This example uses 0.03 kWh/day, 0.9 kWh/30 days and 11 kWh/year.
Accuracy limit
The calculator prices the values you enter. It cannot know thermostat cycles, power modes, losses, appliance condition or the exact tariff on your bill; verify those inputs for a decision.
L
A small change based on your numbers
Your energy coach
This appliance is already inexpensive to run. Focus on comfort and useful life, not tiny savings.
Use it one hour less each day
$0.66Possible saving per yearTry a common appliance
One tap. Real numbers.
Compare before you plug in
Compare before you plug in
Two appliances can do a similar job at very different monthly costs.
Monthly difference$4.16
Phone charger costs less