Calculate your cost
Start with the example below, then replace the wattage, daily runtime, and rate with the numbers for your rice cooker.
This setup uses about 18 kWh in a 30-day month.
Please enter valid values within the ranges shown.
| Schedule | Hours/day | Cost/month |
|---|---|---|
| Half runtime | 0.5 | $1.69 |
| Page example | 1 | $3.39 |
| Longer runtime | 1.5 | $5.08 |
Same 600-watt input and 18.83¢/kWh rate; only runtime changes.
Formula for the page example
0.6 kW × 1 hr × $0.1883 = $0.11 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
Cooking uses high wattage for less than an hour, while the 'Keep Warm' setting draws a low but steady wattage over many hours.
Use this as a baseline until you can check the label or measure the rice cooker directly. Model, settings, condition, climate, and household routine can all change the result.
What changes the cost?
- 01
Cook time
- 02
Hours left on 'Keep Warm'
- 03
Size of the cooker
Ways to spend less
- Unplug it once the rice is done instead of using 'Keep Warm'.
- Soak rice before cooking to speed up the process.
- Cook larger batches and refrigerate leftovers.