ELECTRICITY · EL-05
Space Heater Cost Calculator
See the daily, monthly and seasonal cost of a portable electric heater.
INPUTSEDIT ANY VALUE
ESTIMATELIVE RESULT
Monthly running cost$49.79
Monthly electricity use270 kWh
Annualized cost$597.46
Planning estimate. Your utility’s tariff, taxes, tiers and adjustments control the actual bill.
FORMULA
Cost = watts ÷ 1,000 × hours × days × price per kWhIMPORTANT LIMIT
Most portable heaters draw 750–1,500 watts. Never use a damaged cord or an undersized extension cord.
HOW TO USE IT
Copy the bill’s units first.
Match every field to the unit printed on your statement. Use the current billing period, preserve fixed charges, and compare a similar number of service days.
For a stronger estimate
- Use the exact rate from your bill instead of a reference average.
- Keep taxes, credits and past-due balances separate.
- Check tiers or time-of-use windows in the utility tariff.