Calculate your cost
Start with the example below, then replace the wattage, daily runtime, and rate with the numbers for your electric kettle.
This setup uses about 9 kWh in a 30-day month.
Please enter valid values within the ranges shown.
| Schedule | Hours/day | Cost/month |
|---|---|---|
| Half runtime | 0.1 | $0.85 |
| Page example | 0.2 | $1.69 |
| Longer runtime | 0.3 | $2.54 |
Same 1,500-watt input and 18.83¢/kWh rate; only runtime changes.
Formula for the page example
1.5 kW × 0.2 hr × $0.1883 = $0.06 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
Boiling water takes a lot of power but happens very fast. An electric kettle works much quicker than a stovetop, making its overall running cost small.
Use this as a baseline until you can check the label or measure the electric kettle directly. Model, settings, condition, climate, and household routine can all change the result.
What changes the cost?
- 01
How much water you boil at once
- 02
The wattage rating of the kettle element
- 03
Starting water temperature
Ways to spend less
- Only fill the kettle with the exact amount of water you need.
- Descale the heating element regularly so it works efficiently.
- Do not leave boiled water sitting just to boil it again later.