Electricity Consumption Calculator

Electricity Cost Calculator Explained

This electricity calculator estimates how much your appliances, lights or home devices cost to run per hour, per day and per month. You can enter wattage, usage time and electricity price (kWh rate) to see true operating expenses.

How electricity cost is calculated

Basic formula:

Cost = (Wattage ÷ 1000) × Hours Used × Price per kWh

Example:

• Device: 1400W space heater
• Usage: 4 hours per day
• Energy price: $0.16 per kWh

Cost per day = (1400 ÷ 1000) × 4 × 0.16 = $0.90
Monthly (30 days) = ~$27

The calculator applies that logic instantly and summarizes costs clearly.

Common devices people calculate

• Air conditioners & heaters
• Refrigerators & freezers
• Computers and TVs
• Laundry machines
• Lighting systems

Energy usage can vary significantly by model and efficiency level.

Electricity cost examples

Typical 100W light bulb:

4 hours/day at $0.16/kWh ≈ $1.92/month

Large AC unit at 2000W:

6 hours/day ≈ $57–65/month

Gaming computer (approx. 600W active load):

5 hours/day ≈ $14–18/month

How to reduce electricity cost

• Use energy-efficient appliances
• Upgrade to LED lights
• Reduce runtime where possible
• Use smart thermostats
• Improve insulation

The calculator helps identify which appliances cost most and where savings matter.

FAQ

Is electricity price the default?
No, enter your local rate for accuracy — U.S. average ranges $0.11–$0.20/kWh depending on state.

What if my device wattage varies?
Use the “maximum wattage”—real cost usually ends up lower.

Does this include delivery and service charges?
Not automatically; you should include them inside your kWh rate.

This electricity consumption calculator helps estimate real monthly cost of everyday devices and highlights which appliances use the most energy.