How Much Does a 1-watt electric toothbrush Cost to Run?
A 1-watt electric toothbrush uses 0 kWh per hour and costs $0.0002 per hour at $0.175/kWh. Used 0.1 hours a day, that is $0.0000 per day, $0.0005 per month and $0.006 per year.
Calculate your own cost
- Per hour
- $0.00020 kWh
- Per day
- $0.00000 kWh
- Per week
- $0.00010 kWh
- Per month (30 days)
- $0.00050 kWh
- Per year
- $0.0060.04 kWh
Formula: watts ÷ 1,000 × hours × rate. Edit any box and every number updates instantly.
People also ask
How much does a 1-watt electric toothbrush cost per hour?
At $0.175/kWh, it costs $0.0002 per hour. The maths: 1 W ÷ 1,000 = 0 kWh per hour, × $0.175 = $0.0002.
How much does it cost per month?
Used 0.1 hours a day for 30 days, it costs about $0.0005 per month and uses 0 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 kWh per month and 0.04 kWh per year at 0.1 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?
Use the manufacturer’s charger and consider standby draw only if you want a detailed annual estimate. 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 $0.0003 and at 30¢ it is $0.0009. 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 | $0.0002 | $0.005 | $0.064 |
| 2 hours | 0 kWh | $0.0004 | $0.011 | $0.128 |
| 3 hours | 0 kWh | $0.0005 | $0.016 | $0.192 |
| 4 hours | 0 kWh | $0.0007 | $0.021 | $0.256 |
| 5 hours | 0.01 kWh | $0.0009 | $0.026 | $0.319 |
| 6 hours | 0.01 kWh | $0.001 | $0.032 | $0.383 |
| 7 hours | 0.01 kWh | $0.001 | $0.037 | $0.447 |
| 8 hours | 0.01 kWh | $0.001 | $0.042 | $0.511 |
| 9 hours | 0.01 kWh | $0.002 | $0.047 | $0.575 |
| 10 hours | 0.01 kWh | $0.002 | $0.053 | $0.639 |
| 11 hours | 0.01 kWh | $0.002 | $0.058 | $0.703 |
| 12 hours | 0.01 kWh | $0.002 | $0.063 | $0.767 |
| 13 hours | 0.01 kWh | $0.002 | $0.068 | $0.83 |
| 14 hours | 0.01 kWh | $0.002 | $0.074 | $0.894 |
| 15 hours | 0.02 kWh | $0.003 | $0.079 | $0.958 |
| 16 hours | 0.02 kWh | $0.003 | $0.084 | $1.02 |
| 17 hours | 0.02 kWh | $0.003 | $0.089 | $1.09 |
| 18 hours | 0.02 kWh | $0.003 | $0.095 | $1.15 |
| 19 hours | 0.02 kWh | $0.003 | $0.10 | $1.21 |
| 20 hours | 0.02 kWh | $0.004 | $0.105 | $1.28 |
| 21 hours | 0.02 kWh | $0.004 | $0.11 | $1.34 |
| 22 hours | 0.02 kWh | $0.004 | $0.116 | $1.41 |
| 23 hours | 0.02 kWh | $0.004 | $0.121 | $1.47 |
| 24 hours | 0.02 kWh | $0.004 | $0.126 | $1.53 |
How we worked it out
- Energy per hour: 1 W ÷ 1,000 = 0 kWh
- Cost per hour: 0 kWh × $0.175 = $0.0002
- Cost per day: × 0.1 hours = $0.0000
- Month and year: × 30 days = $0.0005, × 365 days = $0.006
What it costs in different places
Same 1-watt electric toothbrush, 0.1 hours a day. Only the local electricity rate changes.
| Place | Rate per kWh | Cost per month |
|---|---|---|
| United States | $0.175 | $0.0005 |
| California | $0.32 | $0.0010 |
| Texas | $0.155 | $0.0005 |
| New York | $0.25 | $0.0008 |
| Florida | $0.155 | $0.0005 |
| Illinois | $0.17 | $0.0005 |
| Pennsylvania | $0.18 | $0.0005 |
| Ohio | $0.17 | $0.0005 |
| Washington | $0.115 | $0.0003 |
About electric toothbrush running costs
An electric toothbrush uses a small motor briefly, while the charging stand may draw a little power between uses.
Typical sizes: 1 W, 2 W, 5 W, 10 W.
How to spend less: Use the manufacturer’s charger and consider standby draw only if you want a detailed annual estimate.
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.