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Calcimator

Electricity Cost Calculator

Calculate the electricity cost of any appliance or device. Find out daily, monthly, and yearly energy costs based on wattage and usage.

Inputs

watts
hrs/day
days
$/kWh

Results

Monthly Cost

$31.2

Daily Cost$1.04
Yearly Cost$379.6
Monthly Usage240 kWh
Yearly Usage2,920 kWh

Monthly Cost

$31.2

How to Use This Calculator
  1. Start by filling in the input fields below. Results update instantly as you type, so you can experiment with different values to see how they affect the outcome.
  2. Power Consumption — Check the label on your device for wattage. Accepts values from 1 watts to 10,000 watts (default: 1,000 watts).
  3. Hours Used per Day — enter a number in hrs/day. Accepts values from 0.5 hrs/day to 24 hrs/day (default: 8 hrs/day).
  4. Days per Month — enter a number in days. Accepts values from 1 days to 31 days (default: 30 days).
  5. Electricity Rate — US average: ~$0.13/kWh. Check your electric bill. Accepts values from $0.05 /kWh to $0.5 /kWh (default: $0.13 /kWh).
  6. Once all inputs are set, review your results in the Results panel. Here's what each output means:
  7. Monthly Cost — shown as a dollar amount. This is the primary result of this calculator.
  8. Daily Cost — shown as a dollar amount.
  9. Yearly Cost — shown as a dollar amount.
  10. Monthly Usage — shown as a numeric value.
  11. Yearly Usage — shown as a numeric value.
  12. View the Monthly Cost Comparison below for a visual breakdown of how the numbers relate to each other.
  13. Check the Appliance Cost Comparison for a detailed row-by-row breakdown. This is useful for spotting trends or finding values at specific points.
  14. Explore the related calculators below if you need deeper analysis or want to approach this topic from a different angle.
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Formula

Cost = (Watts ÷ 1000) × Hours × Days × Rate per kWh. 1 kWh = 1,000 watts used for 1 hour.

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