Find your beard & moustache trimmer power consumption by entering your wattage, the hours a day your beard & moustache trimmer runs and your electricity rate. Click Calculate and you get your cost per day, month and year along with the kWh it uses. Those same results also cover beard & moustache trimmer electricity consumption.
Wondering what your grooming routine adds to the power bill? This Beard & Moustache Trimmer Electricity Consumption guide shows you how to turn a few numbers from the trimmer's label into kilowatt-hours per month, so you can see that a small device barely registers on your meter.
An electricity usage calculator multiplies how much power a device draws by how long it runs, then converts the result into units your utility bills you for. For a trimmer you only need three inputs: the watts printed on the motor or charger, the time spent running or charging, and your electric rate. Our energy usage calculator approach follows the same steps the utility tools use for every household appliance, from a microwave to a computer.
This is how it works in practice: enter the rating, enter the minutes you use the trimmer each day, and the result is your device's energy consumption for the month. Every electricity consumption calculator you meet online relies on the same arithmetic, which is why you can also do it by hand.
The conversion from watts to kilowatt-hours is a single line:
$$\text{kWh} = \frac{\text{watts} \times \text{hours used}}{1000}$$
Multiply the result by your price per unit to get the monthly cost:
$$\text{cost} = \text{kWh} \times \text{rate}$$
Take a cordless trimmer that draws 11 W while the motor runs and charges from a 4.8 W adapter. You trim for 4 minutes a day, so it runs 120 minutes (2 hours) over 30 days, and you plug it in for 2.2 hours three times a month. Your average electric rate in this example is $0.1584 per kWh.
Running: \(11 \times 2 \div 1000 = 0.022\) kWh. Charging: \(4.8 \times 2.2 \times 3 \div 1000 = 0.03168\) kWh. Added together, your monthly kWh usage is 0.05368 kWh, and that is your whole power consumption for the month.
At $0.1584 per kWh, 0.05368 kWh costs about $0.0085 per month, which is under one cent. Over twelve months your trimmer uses roughly 0.644 kWh, an annual electric bill contribution of around $0.10.
| Item | Watts | Hours per month | kWh per month | Cost per month |
|---|---|---|---|---|
| Trimmer motor running | 11 | 2 | 0.022 | $0.0035 |
| Trimmer charging | 4.8 | 6.6 | 0.03168 | $0.0050 |
| Hair dryer | 1,500 | 5 | 7.5 | $1.19 |
| Microwave | 1,100 | 5 | 5.5 | $0.87 |
| Coffee maker | 900 | 7.5 | 6.75 | $1.07 |
| Computer | 120 | 60 | 7.2 | $1.14 |
A household electricity consumption calculator adds up every device in the home, and the table above shows why a trimmer sits at the very bottom of that list. Your hair dryer alone uses about 140 times the energy of the trimmer, because its heating element pulls hundreds of times more power.
Heat is what makes appliances expensive. Motors and chargers in small devices draw only a few watts, while anything that produces heat, such as a hair dryer or coffee maker, draws 900 to 1,800 W. A flat-screen TV or game system falls in between, so a trimmer is closer to a phone charger than a kitchen appliance.
If you want to save energy, the trimmer's roughly $0.10 a year is not where the savings are. A utility's energy usage breakdown names heating, cooling and water heating as the largest sources of electricity use, and your energy costs from those loads dwarf anything your trimmer adds.
An electric usage calculator is most useful when it shows you which habits matter. These tips lower your trimmer's consumption without giving up the grooming routine. Also see how much energy does a usb desk fan use.
A newer trimmer saves almost nothing, so any energy-saving budget belongs elsewhere: LED bulbs use about 75% less power than incandescent lighting, a computer in sleep mode idles lower, and a thermostat set to 68 degrees Fahrenheit in winter and 78 in summer cuts far more than a trimmer ever could. Compare the yearly efficiency rating of an old and new unit, then multiply the difference by your rate.
When several people in your home groom with their own devices, the number of appliances multiplies the result, but the total stays tiny. Three trimmers like the one in our example add up to 0.161 kWh per month, or about $0.026, so a barbershop-style setup in your bathroom still barely changes your energy use.
Most appliances with a charger keep drawing a trickle of power after the battery is full. Treat that trickle as part of your home's baseline energy use: a charger left plugged in around the clock at 0.5 W adds 0.36 kWh each month, which is more than the trimmer's own 0.05368 kWh. Charging only when needed removes that waste.
Tomás is deciding whether a second cordless trimmer for the travel bag is worth worrying about on the bill. The label on his first one says 9.2 W under load, and a plug-in meter on the bathroom outlet reads 6.3 W while the charger works. His last statement lists $0.1427 per kWh. Compare with fish tank electricity consumption.
He enters those figures into the energy usage calculator: 3.5 minutes of trimming a day over 31 days, and two full charges of 3.4 hours each. The motor line returns 16.64 Wh, the charger line returns 42.84 Wh, and the monthly total lands at 0.0595 kWh, or $0.0085 at his rate.
To judge that number, he sets it beside the U.S. Energy Information Administration's figure of roughly 900 kWh for an average household each month. The trimmer works out to 0.0066% of it, so the purchase passes without further thought.
The charger is the part that catches his attention. Tomás has been leaving it plugged in all month, and the meter still shows 0.4 W with the battery full. Over 720 hours that is 0.288 kWh, nearly five times the trimmer's own 0.0595 kWh. He reruns the calculator with the charger idle for 720 hours and sees $0.041 added to the month.
His decision is specific: the second trimmer is fine, and both chargers move to a switched power strip that goes off once the indicator light turns green.
These estimates use averages, so treat them as a starting point and customize the figures for your own trimmer. Your utility shows the exact rate per kWh on every statement, and you can compare two models by entering each one's wattage and charging time. Compare with water softener power consumption.
To estimate per month usage, count minutes of use, convert to hours, and apply the formula above. Add charging time separately, since a charger can consume power even after the battery is full. A kWh is simply 1,000 watts running for one hour, so a 5 W charger needs 200 hours to use a single unit.
Your electric rate may differ from the $0.1584 used here, and time-of-use plans can change it by the hour. Multiply the appliance usage in kWh by the rate on your bill, and the answer is specific to your household. The monthly energy usage number never changes; only the price attached to it does.
Your statement lists total kwh usage for the billing period. Your trimmer should account for well under 0.1 kWh of that total, so compare the figure against the sum of your device estimates to see how much of your power is unexplained, then use a plug-in meter to measure it directly.