How much does it cost to run a electric pencil sharpener?
A typical electric pencil sharpener draws about 60 watts. Used 0.2 hours a day, that works out to roughly $0.00 per day, $0.03 per month, and $0.41 per year on an average electricity rate of 17¢ per kWh. Electric pencil sharpeners draw 40–80 watts and use energy only during active sharpening cycles.
Electric Pencil Sharpener running cost calculator
- Per day
- $0.00
- Per month
- $0.03
- Per year
- $0.41
- CO₂ / year
- 1 kg
Based on 2.4 kWh per year. Adjust the price per kWh to match your latest electricity bill for an exact figure.
The number that matters most is your own electricity rate. Rates range from under 11¢ per kWh in some regions to over 30¢ in others, so the same electric pencil sharpener can cost two or three times as much depending on where you live. Enter your exact rate in the calculator above to get a figure tailored to your bill.
As a home office device, the electric pencil sharpener sits in the middle of most household energy budgets. The number that moves your bill is total run time, so the usage hours in the calculator above matter as much as the wattage.
At 60 watts, the electric pencil sharpener is a low-power device, so its cost per hour is small. The annual total only becomes meaningful if it runs for many hours a day — which is exactly why long-running low-wattage devices are easy to overlook on a bill.
Over a full year this electric pencil sharpener uses about 2.4 kWh of electricity and is responsible for roughly 1 kg of CO₂ emissions on an average grid. Since it is used only part of the year, your real footprint scales with the season — the annual figure assumes a typical usage pattern.
To put the draw in everyday terms, one hour of running this electric pencil sharpener uses about as much electricity as charging a smartphone 5 times. It is a rough comparison, but it makes an abstract wattage figure easier to picture.
If this electric pencil sharpener is one you use daily, even small efficiency gains compound. Cutting its usage or wattage by 20% would save around $0.08 every year — money that an efficient replacement can recover over its lifetime.
Frequently asked questions
- How much does it cost to run a electric pencil sharpener per hour?
- At 60 watts and a 17¢/kWh rate, a electric pencil sharpener costs about $0.01 per hour to run.
- How much electricity does a electric pencil sharpener use per month?
- Running 0.2 hours a day, a electric pencil sharpener uses roughly 0.2 kWh per month, costing about $0.03.
- How many kWh does a electric pencil sharpener use per year?
- Used 0.2 hours a day for 200 days a year, a electric pencil sharpener consumes about 2.4 kWh annually — that is the figure your electricity rate is multiplied by to get the $0.41 yearly cost.
- Is a electric pencil sharpener expensive to run?
- Not particularly — at around $0.41 per year, a electric pencil sharpener is a relatively minor part of most electricity bills.
- How much CO₂ does a electric pencil sharpener produce?
- On an average grid, a electric pencil sharpener used this much is responsible for roughly 1 kg of CO₂ per year. The exact figure depends on how clean your local electricity supply is.
- How can I reduce my electric pencil sharpener running costs?
- Use it during off-peak hours if your utility offers time-of-use pricing, reduce daily run time, and consider an ENERGY STAR rated electric pencil sharpener, which uses less power for the same job.