Calculate your cost
Start with the example below, then replace the wattage, daily runtime, and rate with the numbers for your refrigerator.
This setup uses about 36 kWh in a 30-day month.
Please enter valid values within the ranges shown.
| Schedule | Hours/day | Cost/month |
|---|---|---|
| Half runtime | 4 | $3.39 |
| Page example | 8 | $6.78 |
| Longer runtime | 12 | $10.17 |
Same 150-watt input and 18.83¢/kWh rate; only runtime changes.
Formula for the page example
0.15 kW × 8 hr × $0.1883 = $0.23 per day
Convert watts to kilowatts, multiply by the active hours used each day, then multiply by the electricity price in dollars per kWh. Multiply the daily result by 30 for the monthly estimate shown above.
How to read this estimate
A refrigerator stays plugged in all day, but the compressor switches on and off. The default runtime allows for that cycling; multiplying rated watts by 24 hours will usually overstate normal use.
Use this as a baseline until you can check the label or measure the refrigerator directly. Model, settings, condition, climate, and household routine can all change the result.
What changes the cost?
- 01
Compressor duty cycle, age, and efficiency
- 02
Kitchen temperature and clearance around the coils
- 03
Door openings, seal condition, and temperature setting
Ways to spend less
- Check that the door gasket seals along its full edge.
- Leave ventilation space and clean accessible condenser coils.
- Let hot food cool safely before placing it inside.