How Much Electricity Does An Electric Toothbrush Charger Use?
An electric toothbrush charger typically uses about 2 watts while running. At 2 hours a day that is 0 kWh per day, 0.12 kWh per month and 1.46 kWh per year.
Calculate your own cost
- Per hour
- $0.00040 kWh
- Per day
- $0.00070 kWh
- Per week
- $0.0050.03 kWh
- Per month (30 days)
- $0.0210.12 kWh
- Per year
- $0.2561.46 kWh
Formula: watts ÷ 1,000 × hours × rate. Edit any box and every number updates instantly.
People also ask
How much does a 2-watt electric toothbrush charger cost per hour?
At $0.175/kWh, it costs $0.0004 per hour. The maths: 2 W ÷ 1,000 = 0 kWh per hour, × $0.175 = $0.0004.
How much does it cost per month?
Used 2 hours a day for 30 days, it costs about $0.021 per month and uses 0.12 kWh. Change the hours in the calculator above to match how you use it.
How many kWh does it use?
0 kWh per day, 0.12 kWh per month and 1.46 kWh per year at 2 hours a day. A kWh is one kilowatt (1,000 W) used for one hour. It is the unit on your electricity bill.
How can I lower the cost?
Follow the manufacturer’s charging guidance rather than leaving it on charge unnecessarily. Check your bill for the exact rate and enter it above.
Does my electricity rate change the answer?
Yes, a lot. At 10¢ per kWh the monthly cost is $0.012 and at 30¢ it is $0.036. Find your rate on your bill (total cost ÷ kWh used) and type it into the calculator.
Cost by hours of use
| Used per day | Energy per day | Cost per day | Cost per month | Cost per year |
|---|---|---|---|---|
| 1 hour | 0 kWh | $0.0004 | $0.011 | $0.128 |
| 2 hours | 0 kWh | $0.0007 | $0.021 | $0.256 |
| 3 hours | 0.01 kWh | $0.001 | $0.032 | $0.383 |
| 4 hours | 0.01 kWh | $0.001 | $0.042 | $0.511 |
| 5 hours | 0.01 kWh | $0.002 | $0.053 | $0.639 |
| 6 hours | 0.01 kWh | $0.002 | $0.063 | $0.767 |
| 7 hours | 0.01 kWh | $0.002 | $0.074 | $0.894 |
| 8 hours | 0.02 kWh | $0.003 | $0.084 | $1.02 |
| 9 hours | 0.02 kWh | $0.003 | $0.095 | $1.15 |
| 10 hours | 0.02 kWh | $0.004 | $0.105 | $1.28 |
| 11 hours | 0.02 kWh | $0.004 | $0.116 | $1.41 |
| 12 hours | 0.02 kWh | $0.004 | $0.126 | $1.53 |
| 13 hours | 0.03 kWh | $0.005 | $0.137 | $1.66 |
| 14 hours | 0.03 kWh | $0.005 | $0.147 | $1.79 |
| 15 hours | 0.03 kWh | $0.005 | $0.158 | $1.92 |
| 16 hours | 0.03 kWh | $0.006 | $0.168 | $2.04 |
| 17 hours | 0.03 kWh | $0.006 | $0.179 | $2.17 |
| 18 hours | 0.04 kWh | $0.006 | $0.189 | $2.30 |
| 19 hours | 0.04 kWh | $0.007 | $0.20 | $2.43 |
| 20 hours | 0.04 kWh | $0.007 | $0.21 | $2.56 |
| 21 hours | 0.04 kWh | $0.007 | $0.221 | $2.68 |
| 22 hours | 0.04 kWh | $0.008 | $0.231 | $2.81 |
| 23 hours | 0.05 kWh | $0.008 | $0.242 | $2.94 |
| 24 hours | 0.05 kWh | $0.008 | $0.252 | $3.07 |
How we worked it out
- Energy per hour: 2 W ÷ 1,000 = 0 kWh
- Cost per hour: 0 kWh × $0.175 = $0.0004
- Cost per day: × 2 hours = $0.0007
- Month and year: × 30 days = $0.021, × 365 days = $0.256
About electric toothbrush charger running costs
Electric toothbrush chargers draw little power. Inductive charging and standby behavior vary by model, so annual cost is usually small.
Typical sizes: 1 W, 2 W, 5 W, 10 W.
How to spend less: Follow the manufacturer’s charging guidance rather than leaving it on charge unnecessarily.
What this estimate assumes
- The appliance draws its full stated wattage the whole time it is on. Real units with a thermostat cycle off and cost less.
- Wattage is the typical label value, not a measured value. Check the label on your own appliance.
- The rate is an approximate residential average. Your bill may include fixed fees, tiers or time-of-use pricing. Edit the rate above.
- A month is 30 days and a year is 365 days.