Appliance Wattage & Running Cost
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How much does it cost to run a laptop? ($1.53/mo)

Running a laptop costs about $1.53 / month
($0.05/day at 6 h/day, $0.17/kWh).

Running cost calculator

Per hour
Per day
Per month
Per year
Energy/mo

A laptop is far more efficient than a desktop, drawing only what its battery charger needs plus a little for the screen.

Cost at different electricity rates

Electricity ratePer dayPer monthPer year
$0.10/kWh$0.03$0.90$10.95
$0.15/kWh$0.05$1.35$16.43
$0.20/kWh$0.06$1.80$21.90
$0.25/kWh$0.08$2.25$27.38
$0.30/kWh$0.09$2.70$32.85
$0.40/kWh$0.12$3.60$43.80

Cost over time

Per hour of use$0.01
Per day (6 h)$0.05
Per month$1.53
Per year$18.62

How to spend less

Want the raw figure? See how many watts a laptop uses.

FAQ

How many watts does a laptop use?

About 20-100 watts while charging and in use; less once the battery is full.

Is a laptop cheaper to run than a desktop?

Much cheaper - laptops are built around battery efficiency.