Calculate your cost
Start with a representative input, then edit all three numbers.
This setup uses about 24 kWh in a 30-day month.
Please enter valid values within the ranges shown.
| Schedule | Hours/day | Cost/month |
|---|---|---|
| Half runtime | 4 | $2.26 |
| Starting point | 8 | $4.52 |
| Longer runtime | 12 | $6.78 |
Same 100-watt input and 18.83¢/kWh rate; only runtime changes.
The quick formula
0.1 kW × 8 hours × $0.1883 = $0.15 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 chest freezer cycles throughout the day and generally holds cold air well when opened. Garage temperature, frost buildup, and an aging seal can make its compressor run much longer than the default assumption.
The starting values keep this page useful before you have a label or meter reading. They do not describe every model, climate, operating mode, or household.
What changes the cost?
- 01
Freezer size, age, and compressor efficiency
- 02
Ambient temperature in a garage, basement, or utility room
- 03
Frost accumulation, lid seal, and thermostat setting
Ways to spend less
- Defrost when ice buildup becomes substantial.
- Keep the lid gasket clean and confirm it seals evenly.
- Place the freezer away from heat sources with room for ventilation.