Cost to Run a Phone Charger Calculator

Estimate how much it costs to run a phone charger based on wattage, daily usage, and your electricity rate. A simple baseline is 8 watts for 3 hours per day across typical daily charging.

Fast estimate No signup Updated for 2026 rates

Typical electricity cost

How much does a Phone Charger cost to run?

Based on typical usage

A Phone Charger typically uses about 8 watts, costing around $0.00 per hour at $0.15 per kWh.

At typical use (3 hours per day), that's about $0.11 per month and $1.31 per year.

Per hour $0.00
Daily $0.00
Monthly $0.11
Yearly $1.31

Based on

  • 8 watts
  • 3 hours per day
  • $0.15 per kWh

What affects cost most

  • Average hours used per day
  • Electricity rate in dollars per kWh
  • Performance mode, accessories, and idle time between tasks

How it works: Daily cost uses wattage, hours per day, and electricity rate. Monthly uses daily × 30; yearly uses daily × 365.

Use the calculator below to estimate cost based on your own wattage, usage time, and electricity rate.

Calculator

1. Device

2. Usage

Quick presets

3. Rate

Enter your values and click Calculate Cost.

How Much Electricity Does a Phone Charger Use?

These example monthly costs show how daily runtime changes the bill at a typical electricity rate.

Example monthly costs

  • Light Use 1.8 hours per day
    $0.06/month
  • Typical Use 3 hours per day
    $0.11/month
  • Heavy Use 4.2 hours per day
    $0.15/month

Get a better estimate and keep costs down

Defaults are a starting point. Real cost changes most when runtime, wattage, and your electricity rate differ from the benchmark assumptions.

What changes cost most

  • Average hours used per day
  • Electricity rate in dollars per kWh
  • Performance mode, accessories, and idle time between tasks

How to get a better estimate and lower cost

  • Replace the default electricity rate with the actual rate from your latest power bill.
  • Adjust daily runtime to match how long you actually use the equipment.
  • Unplug chargers from power strips when they are not needed.
  • Avoid using higher-watt chargers for longer than necessary.
  • Charge multiple devices efficiently instead of scattering chargers everywhere.
  • Replace damaged cables that waste time and power during charging.

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