WattCostCalc

Cost to Run an 80-watt aquarium filter for 24 hours

Running an 80-watt aquarium filter for 24 hours uses 1.92 kWh and costs $0.336 at $0.175/kWh. Do that every day and it adds up to $10.08 a month.

$0.336 for 24 hoursat $0.175/kWh

Calculate your own cost

Hours per day:
$0.336per day
Per hour
$0.0140.08 kWh
Per day
$0.3361.92 kWh
Per week
$2.3513.4 kWh
Per month (30 days)
$10.0857.6 kWh
Per year
$122.64701 kWh

Formula: watts ÷ 1,000 × hours × rate. Edit any box and every number updates instantly.

People also ask

How much does an 80-watt aquarium filter cost per hour?

At $0.175/kWh, it costs $0.014 per hour. The maths: 80 W ÷ 1,000 = 0.08 kWh per hour, × $0.175 = $0.014.

How much does it cost per month?

Used 24 hours a day for 30 days, it costs about $10.08 per month and uses 57.6 kWh. Change the hours in the calculator above to match how you use it.

How many kWh does it use?

1.92 kWh per day, 57.6 kWh per month and 701 kWh per year at 24 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?

Clean the filter according to its instructions without disrupting the biological cycle. 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 $5.76 and at 30¢ it is $17.28. Find your rate on your bill (total cost ÷ kWh used) and type it into the calculator.

Cost by hours of use

Used per dayEnergy per dayCost per dayCost per monthCost per year
1 hour0.08 kWh$0.014$0.42$5.11
2 hours0.16 kWh$0.028$0.84$10.22
3 hours0.24 kWh$0.042$1.26$15.33
4 hours0.32 kWh$0.056$1.68$20.44
5 hours0.4 kWh$0.07$2.10$25.55
6 hours0.48 kWh$0.084$2.52$30.66
7 hours0.56 kWh$0.098$2.94$35.77
8 hours0.64 kWh$0.112$3.36$40.88
9 hours0.72 kWh$0.126$3.78$45.99
10 hours0.8 kWh$0.14$4.20$51.10
11 hours0.88 kWh$0.154$4.62$56.21
12 hours0.96 kWh$0.168$5.04$61.32
13 hours1.04 kWh$0.182$5.46$66.43
14 hours1.12 kWh$0.196$5.88$71.54
15 hours1.2 kWh$0.21$6.30$76.65
16 hours1.28 kWh$0.224$6.72$81.76
17 hours1.36 kWh$0.238$7.14$86.87
18 hours1.44 kWh$0.252$7.56$91.98
19 hours1.52 kWh$0.266$7.98$97.09
20 hours1.6 kWh$0.28$8.40$102.20
21 hours1.68 kWh$0.294$8.82$107.31
22 hours1.76 kWh$0.308$9.24$112.42
23 hours1.84 kWh$0.322$9.66$117.53
24 hours1.92 kWh$0.336$10.08$122.64

How we worked it out

  1. Energy per hour: 80 W ÷ 1,000 = 0.08 kWh
  2. Cost per hour: 0.08 kWh × $0.175 = $0.014
  3. Cost per day: × 24 hours = $0.336
  4. Month and year: × 30 days = $10.08, × 365 days = $122.64

What it costs in different places

Same 80-watt aquarium filter, 24 hours a day. Only the local electricity rate changes.

PlaceRate per kWhCost per month
United States$0.175$10.08
California$0.32$18.43
Texas$0.155$8.93
New York$0.25$14.40
Florida$0.155$8.93
Illinois$0.17$9.79
Pennsylvania$0.18$10.37
Ohio$0.17$9.79
Washington$0.115$6.62

About aquarium filter running costs

Aquarium filters generally run continuously, so daily energy is based on all-day operation rather than a short session.

Typical sizes: 5 W, 20 W, 40 W, 80 W.

How to spend less: Clean the filter according to its instructions without disrupting the biological cycle.

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.

Read the full calculation methodology

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