Cost to Run a 5-watt electric shaver for 20 hours in California
Running a 5-watt electric shaver for 20 hours uses 0.1 kWh and costs $0.032 at $0.32/kWh in California. Do that every day and it adds up to $0.96 a month.
Calculate your own cost
- Per hour
- $0.0020.01 kWh
- Per day
- $0.0320.1 kWh
- Per week
- $0.2240.7 kWh
- Per month (30 days)
- $0.963 kWh
- Per year
- $11.6836.5 kWh
Formula: watts ÷ 1,000 × hours × rate. Edit any box and every number updates instantly.
People also ask
How much does a 5-watt electric shaver cost per hour?
At $0.32/kWh, it costs $0.002 per hour. The maths: 5 W ÷ 1,000 = 0.01 kWh per hour, × $0.32 = $0.002.
How much does it cost per month?
Used 20 hours a day for 30 days, it costs about $0.96 per month and uses 3 kWh. Change the hours in the calculator above to match how you use it.
How many kWh does it use?
0.1 kWh per day, 3 kWh per month and 36.5 kWh per year at 20 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?
Charge as needed and use the model’s rated input for a rough 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 $0.30 and at 30¢ it is $0.90. Find your rate on your bill (total cost ÷ kWh used) and type it into the calculator.
Cost by hours of use in California
| Used per day | Energy per day | Cost per day | Cost per month | Cost per year |
|---|---|---|---|---|
| 1 hour | 0.01 kWh | $0.002 | $0.048 | $0.584 |
| 2 hours | 0.01 kWh | $0.003 | $0.096 | $1.17 |
| 3 hours | 0.02 kWh | $0.005 | $0.144 | $1.75 |
| 4 hours | 0.02 kWh | $0.006 | $0.192 | $2.34 |
| 5 hours | 0.03 kWh | $0.008 | $0.24 | $2.92 |
| 6 hours | 0.03 kWh | $0.01 | $0.288 | $3.50 |
| 7 hours | 0.04 kWh | $0.011 | $0.336 | $4.09 |
| 8 hours | 0.04 kWh | $0.013 | $0.384 | $4.67 |
| 9 hours | 0.05 kWh | $0.014 | $0.432 | $5.26 |
| 10 hours | 0.05 kWh | $0.016 | $0.48 | $5.84 |
| 11 hours | 0.06 kWh | $0.018 | $0.528 | $6.42 |
| 12 hours | 0.06 kWh | $0.019 | $0.576 | $7.01 |
| 13 hours | 0.07 kWh | $0.021 | $0.624 | $7.59 |
| 14 hours | 0.07 kWh | $0.022 | $0.672 | $8.18 |
| 15 hours | 0.08 kWh | $0.024 | $0.72 | $8.76 |
| 16 hours | 0.08 kWh | $0.026 | $0.768 | $9.34 |
| 17 hours | 0.09 kWh | $0.027 | $0.816 | $9.93 |
| 18 hours | 0.09 kWh | $0.029 | $0.864 | $10.51 |
| 19 hours | 0.1 kWh | $0.03 | $0.912 | $11.10 |
| 20 hours | 0.1 kWh | $0.032 | $0.96 | $11.68 |
| 21 hours | 0.11 kWh | $0.034 | $1.01 | $12.26 |
| 22 hours | 0.11 kWh | $0.035 | $1.06 | $12.85 |
| 23 hours | 0.12 kWh | $0.037 | $1.10 | $13.43 |
| 24 hours | 0.12 kWh | $0.038 | $1.15 | $14.02 |
How we worked it out
- Energy per hour: 5 W ÷ 1,000 = 0.01 kWh
- Cost per hour: 0.01 kWh × $0.32 = $0.002
- Cost per day: × 20 hours = $0.032
- Month and year: × 30 days = $0.96, × 365 days = $11.68
California electricity prices
California pays about $0.32 per kWh, which is 83% higher than the US average of $0.175. The same electric shaver would cost $0.525 a month at the national average.
What it costs in different places
Same 5-watt electric shaver, 20 hours a day. Only the local electricity rate changes.
| Place | Rate per kWh | Cost per month |
|---|---|---|
| United States | $0.175 | $0.525 |
| California | $0.32 | $0.96 |
| Texas | $0.155 | $0.465 |
| New York | $0.25 | $0.75 |
| Florida | $0.155 | $0.465 |
| Illinois | $0.17 | $0.51 |
| Pennsylvania | $0.18 | $0.54 |
| Ohio | $0.17 | $0.51 |
| Washington | $0.115 | $0.345 |
About electric shaver running costs
Electric shavers use modest power for short periods or while charging. Battery capacity can help estimate energy per full charge.
Typical sizes: 5 W, 10 W, 20 W, 30 W.
How to spend less: Charge as needed and use the model’s rated input for a rough 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 in California. 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.