Calculate your cost
Start with the example below, then replace the wattage, daily runtime, and rate with the numbers for your heating pad.
This setup uses about 2 kWh in a 30-day month.
Please enter valid values within the ranges shown.
| Schedule | Hours/day | Cost/month |
|---|---|---|
| Half runtime | 0.5 | $0.14 |
| Page example | 1 | $0.28 |
| Longer runtime | 1.5 | $0.42 |
Same 50-watt input and 18.83¢/kWh rate; only runtime changes.
Formula for the page example
0.05 kW × 1 hr × $0.1883 = $0.01 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
Heating pads offer localized warmth for sore muscles using very low wattage, making them a cheap alternative to raising the room thermostat.
Use this as a baseline until you can check the label or measure the heating pad directly. Model, settings, condition, climate, and household routine can all change the result.
What changes the cost?
- 01
Heat setting
- 02
Auto-shutoff duration
- 03
Size of the pad
Ways to spend less
- Use the auto-shutoff feature so it doesn’t run indefinitely.
- Start on a lower heat setting before turning it up.
- Do not lay on top of the pad, which can trap heat and strain it.