Energy reference
How many watts does a refrigerator use?
A small mini fridge draws about 55–120 watts while its compressor is running, and a full-size refrigerator about 100–400 watts. But a fridge compressor cycles on and off, so it only pulls that wattage part of the time — which is why a mini fridge actually uses roughly 200–400 kWh a year and a full-size one 400–800 kWh. The calculator below turns any wattage into a yearly running cost at your own electricity rate.
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Running-cost calculator
Typical category wattages, not a spec for any one model. Override below with your own.
On the nameplate or spec sheet (amps × 120 if only amps are listed).
From your electric bill. US average is about $0.17.
How much of the time it actually runs. ~33% is typical; warm rooms and frequent openings push it higher.
Estimate = watts × 8,760 hours × 33% duty cycle ÷ 1,000 × $0.17/kWh. If your fridge’s EnergyGuide label lists a kWh-per-year figure, that number × your rate is more accurate than any wattage estimate.
Typical wattage by type
These are typical published ranges for each category — a starting point, not a spec for any one model. Your fridge’s nameplate and EnergyGuide label have its real figures.
| Type | Running watts | Energy / year |
|---|---|---|
| Small mini / skincare fridge | 55–90 W | 150–300 kWh |
| Compact mini fridge | 70–110 W | 200–350 kWh |
| Mini fridge with freezer | 90–130 W | 250–450 kWh |
| Beverage / wine cooler | 80–120 W | 200–400 kWh |
| Full-size refrigerator | 100–400 W | 400–800 kWh |
How to find your fridge’s real wattage
- Read the nameplate sticker (inside the door or on the back). If it lists watts, use that number.
- If it lists only amps, multiply amps × 120 volts. A 1.5-amp fridge is about 180 running watts.
- For the most accurate running cost, use the EnergyGuide label’s kWh-per-year figure and multiply by your electricity rate — it already accounts for cycling.
- A plug-in power meter measures actual draw over a day or week if you want to skip the estimating entirely.
Why rated watts overstate the real cost
A refrigerator does not run its compressor continuously — it kicks on to pull the temperature down, then coasts. Over a full day the compressor might run only a third of the time, so a fridge rated at 90 running watts averages closer to 30 watts. That is why the honest unit of comparison is kWh per year, and why the calculator above uses a duty-cycle input rather than assuming the fridge runs flat out. Warm rooms, poor ventilation, and frequent door openings all push the duty cycle — and the bill — up.
Want the mini-fridge-specific electrical detail — amps, breaker sizing, and whether it can share an outlet? See Mini fridge wattage & amps. For the dollar breakdown of running a mini fridge specifically, see What does a mini fridge cost to run?
Frequently asked questions
How many watts does a refrigerator use?
A small mini fridge draws roughly 55–120 watts while its compressor is running; a mini fridge with a freezer sits at the higher end; a full-size refrigerator runs about 100–400 watts. But the compressor only runs part of the time — roughly a third — so a mini fridge uses about 200–400 kWh a year and a full-size one about 400–800 kWh, far less than the rated wattage running continuously would suggest.
How do I find my refrigerator’s wattage?
Look at the nameplate sticker inside the door or on the back. If it lists watts, use that. If it lists only amps, multiply amps × 120 volts to get watts (for example, 1.5 A × 120 V = 180 W). For running cost, the yellow EnergyGuide label’s kWh-per-year figure is the most accurate input of all.
Does a refrigerator use rated watts all the time?
No. A fridge compressor cycles on and off to hold temperature, so over a day it draws its rated wattage only a fraction of the time — commonly around a third, more in a warm room or with frequent door openings. That duty cycle is why annual kWh, not peak watts, is what actually shows up on your bill.
How much does it cost to run a refrigerator per year?
At the US average of about $0.17 per kWh, a mini fridge typically costs roughly $30–$70 a year and a full-size refrigerator roughly $70–$140. Use the calculator on this page with your own wattage and electricity rate for a personalized estimate.
