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How much does it cost to run a phone charger? ($0.08/mo)
Running a phone charger costs about $0.08 / month
($0.00/day at 3 h/day, $0.17/kWh).
($0.00/day at 3 h/day, $0.17/kWh).
Running cost calculator
Per hour—
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Energy/mo—
A phone charger draws power only while topping up the battery, then trickles to almost nothing once full.
Cost at different electricity rates
| Electricity rate | Per day | Per month | Per year |
|---|---|---|---|
| $0.10/kWh | $0.00 | $0.05 | $0.55 |
| $0.15/kWh | $0.00 | $0.07 | $0.82 |
| $0.20/kWh | $0.00 | $0.09 | $1.10 |
| $0.25/kWh | $0.00 | $0.11 | $1.37 |
| $0.30/kWh | $0.00 | $0.13 | $1.64 |
| $0.40/kWh | $0.01 | $0.18 | $2.19 |
Cost over time
| Per hour of use | $0.00 |
| Per day (3 h) | $0.00 |
| Per month | $0.08 |
| Per year | $0.93 |
How to spend less
- Run it fewer hours or on an eco / lower setting.
- Upgrade to a more efficient model (check the energy label).
- Use a smart plug or timer to kill standby and idle draw.
Want the raw figure? See how many watts a phone charger uses.
FAQ
How many watts does a phone charger use?
About 2-20 watts while charging, depending on fast-charge support.
Does leaving a charger plugged in waste power?
Modern chargers draw almost nothing with no phone attached.
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