Cost to Run a 400-watt appliance for 5 hours in West Virginia
Running a 400-watt appliance for 5 hours uses 2 kWh and costs $0.30 at $0.15/kWh in West Virginia. Do that every day and it adds up to $9.00 a month.
Calculate your own cost
- Per hour
- $0.060.4 kWh
- Per day
- $0.302 kWh
- Per week
- $2.1014 kWh
- Per month (30 days)
- $9.0060 kWh
- Per year
- $109.50730 kWh
Formula: watts ÷ 1,000 × hours × rate. Edit any box and every number updates instantly.
People also ask
How much does a 400-watt appliance cost per hour?
At $0.15/kWh, it costs $0.06 per hour. The maths: 400 W ÷ 1,000 = 0.4 kWh per hour, × $0.15 = $0.06.
How much does it cost per month?
Used 5 hours a day for 30 days, it costs about $9.00 per month and uses 60 kWh. Change the hours in the calculator above to match how you use it.
How many kWh does it use?
2 kWh per day, 60 kWh per month and 730 kWh per year at 5 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 it for fewer hours, switch to a lower-wattage model, and check whether your utility offers cheaper off-peak rates. Enter your own rate above to see the effect.
Does my electricity rate change the answer?
Yes, a lot. At 10¢ per kWh the monthly cost is $6.00 and at 30¢ it is $18.00. Find your rate on your bill (total cost ÷ kWh used) and type it into the calculator.
Cost by hours of use in West Virginia
| Used per day | Energy per day | Cost per day | Cost per month | Cost per year |
|---|---|---|---|---|
| 1 hour | 0.4 kWh | $0.06 | $1.80 | $21.90 |
| 2 hours | 0.8 kWh | $0.12 | $3.60 | $43.80 |
| 3 hours | 1.2 kWh | $0.18 | $5.40 | $65.70 |
| 4 hours | 1.6 kWh | $0.24 | $7.20 | $87.60 |
| 5 hours | 2 kWh | $0.30 | $9.00 | $109.50 |
| 6 hours | 2.4 kWh | $0.36 | $10.80 | $131.40 |
| 7 hours | 2.8 kWh | $0.42 | $12.60 | $153.30 |
| 8 hours | 3.2 kWh | $0.48 | $14.40 | $175.20 |
| 9 hours | 3.6 kWh | $0.54 | $16.20 | $197.10 |
| 10 hours | 4 kWh | $0.60 | $18.00 | $219.00 |
| 11 hours | 4.4 kWh | $0.66 | $19.80 | $240.90 |
| 12 hours | 4.8 kWh | $0.72 | $21.60 | $262.80 |
| 13 hours | 5.2 kWh | $0.78 | $23.40 | $284.70 |
| 14 hours | 5.6 kWh | $0.84 | $25.20 | $306.60 |
| 15 hours | 6 kWh | $0.90 | $27.00 | $328.50 |
| 16 hours | 6.4 kWh | $0.96 | $28.80 | $350.40 |
| 17 hours | 6.8 kWh | $1.02 | $30.60 | $372.30 |
| 18 hours | 7.2 kWh | $1.08 | $32.40 | $394.20 |
| 19 hours | 7.6 kWh | $1.14 | $34.20 | $416.10 |
| 20 hours | 8 kWh | $1.20 | $36.00 | $438.00 |
| 21 hours | 8.4 kWh | $1.26 | $37.80 | $459.90 |
| 22 hours | 8.8 kWh | $1.32 | $39.60 | $481.80 |
| 23 hours | 9.2 kWh | $1.38 | $41.40 | $503.70 |
| 24 hours | 9.6 kWh | $1.44 | $43.20 | $525.60 |
How we worked it out
- Energy per hour: 400 W ÷ 1,000 = 0.4 kWh
- Cost per hour: 0.4 kWh × $0.15 = $0.06
- Cost per day: × 5 hours = $0.30
- Month and year: × 30 days = $9.00, × 365 days = $109.50
West Virginia electricity prices
West Virginia pays about $0.15 per kWh, which is 14% lower than the US average of $0.175. The same appliance would cost $10.50 a month at the national average.
What it costs in different places
Same 400-watt appliance, 5 hours a day. Only the local electricity rate changes.
| Place | Rate per kWh | Cost per month |
|---|---|---|
| United States | $0.175 | $10.50 |
| California | $0.32 | $19.20 |
| Texas | $0.155 | $9.30 |
| New York | $0.25 | $15.00 |
| Florida | $0.155 | $9.30 |
| Illinois | $0.17 | $10.20 |
| Pennsylvania | $0.18 | $10.80 |
| Ohio | $0.17 | $10.20 |
| Washington | $0.115 | $6.90 |
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 West Virginia. 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.