⚡ WattWise
Appliance cost guide

How much does a laptop charger cost to run?

Laptop chargers are efficient, but a full workday plus evening browsing can still add a small recurring cost. WattWise helps you see the hourly, daily, monthly, and yearly numbers in seconds.

Start with a typical 65 watt setup, then adjust the estimate for your own charger and work habits.

Open prefilled calculator Compare against desktop PC
  • Typical starter example: 65 W charger
  • Useful for budgeting everyday work-from-home usage
  • Easy to compare against higher-power devices

Example estimate

65 W × 8 hours/day × $0.14/kWh

Hourly $0.01
Daily $0.07
Monthly $2.18

That usage pattern adds up to about $26.21 per year.

What drives cost

Laptop cost stays low, but runtime still matters

The main driver is how long the charger stays active each day. Most laptop use is far cheaper than heating or cooling, but constant charging across work and personal time can still show up on the bill.

  • Wattage: many laptop chargers sit around 45 to 65 watts.
  • Daily hours: long work sessions raise the total more than you expect.
  • Rate per kWh: your local utility price still controls the final number.
FAQ

Quick laptop questions

Do laptop chargers use much electricity?

Usually not much, but daily charging for long work sessions can still add up over a month.

What wattage should I enter?

Use the charger label if possible. If you do not have it, 65 watts is a common starting point for many laptops.

Can I compare a laptop against a desktop?

Yes. Use the main calculator's comparison mode to see how a laptop charger stacks up against a desktop or another device.

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Keep comparing high-impact home energy costs

WattWise works best when you check a few realistic options side by side. Open another calculator or comparison page below, then fine-tune the wattage and runtime for your home.

Main electricity cost calculator Start from scratch with any appliance, utility rate, or comparison setup. Portable AC vs. window AC Compare two common room-cooling setups with the same monthly usage pattern. Space heater vs. heat pump See how resistance heat stacks up against a lower-cost efficient option. Old refrigerator vs. Energy Star model Estimate the monthly savings from replacing an older inefficient fridge.
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Jump into another common estimate

These pages open practical household scenarios that people search for most often, from heating and cooling to refrigeration and laundry.

Space heater cost Open a typical 1500 W winter heating estimate. Portable AC cost See what a higher-watt room AC can add to a summer power bill. Window AC cost Check a common window-unit cooling estimate and compare it to alternatives. Washer and dryer cost Estimate how much regular laundry adds to monthly electricity use.