Electricity Cost Calculator

The electricity cost calculator is designed to help consumers estimate and monitor their electrical energy consumption costs.

• Power consumption in watts or kilowatts
• Usage duration in hours
• Electricity rate per kilowatt-hour (kWh)
• Additional fees and taxes

Let’s say you want to calculate the cost of running a 1500-watt space heater for 6 hours daily. Electricity cost calculator would help you determine both daily and monthly costs based on your local electricity rate.

Electricity Cost Calculator

Appliance	Power (W)	Hours/Day	Daily kWh	Monthly Cost ($0.14/kWh)
LED TV	100	5	0.5	$2.10
Refrigerator	150	24	3.6	$15.12
AC Unit	1500	8	12	$50.40
Microwave	1200	0.5	0.6	$2.52
Laptop	65	8	0.52	$2.19
Dishwasher	1200	1	1.2	$5.04
Electric Oven	3000	1	3.0	$12.60
Hair Dryer	1800	0.5	0.9	$3.78
Coffee Maker	900	1	0.9	$3.78
Electric Water Heater	4500	2	9.0	$37.80
Gaming Console	200	4	0.8	$3.36
Ceiling Fan	75	10	0.75	$3.15
Electric Kettle	1500	1	1.5	$6.30
Washing Machine	500	1	0.5	$2.10
Tumble Dryer	3000	1	3.0	$12.60

Electricity Cost Calculation Formula

The formula for calculating electricity cost is:

Cost = Power (kW) × Time (hours) × Rate (per kWh)

To convert watts to kilowatts, divide by 1000: kW = Watts ÷ 1000

For a 2000W appliance running for 5 hours at $0.12 per kWh:

• Convert to kW: 2000W ÷ 1000 = 2kW
• Calculate: 2kW × 5 hours × $0.12 = $1.20

How to Calculate Electricity Cost?

To calculate electricity costs accurately, follow these steps:

• Convert device power to kWh and calculates daily and monthly energy usage:
  • Daily Energy Usage (kWh) = Device Power (W) / 1000 × Usage Time (hrs)
  • Monthly Energy Usage (kWh) = Daily Energy Usage × Days Used
• Calculates the monthly cost: Monthly Cost = Monthly Energy Usage × Cost per kWh

For a 100W light bulb used 10 hours daily:

Convert to kW: 100W ÷ 1000 = 0.1kW

Daily usage: 0.1kW × 10 hours × $0.15 = $0.15

Monthly cost: $0.15 × 30 = $4.50

How to Calculate Electricity Bill from Meter Reading?

To calculate your bill from meter readings:

• Record your previous reading
• Take current meter reading
• Subtract previous from current reading to get kWh used
• Multiply by your rate per kWh

• Previous reading: 45,680
• Current reading: 46,230
• Usage: 46,230 – 45,680 = 550 kWh
• Cost at $0.14/kWh: 550 × $0.14 = $77.00

How Much Does 750 Watts Cost Per Hour?

To calculate the hourly cost of 750W:

• Convert to kW: 750W ÷ 1000 = 0.75kW
• Multiply by rate per kWh

At $0.13/kWh: 0.75kW × 1 hour × $0.13 = $0.0975 per hour

How Much is 1000 Units of Electricity?

1000 units equals 1000 kWh of electricity, at an average rate of $0.14/kWh: 1000 kWh × $0.14 = $140.00

How Much Does 800 Watts Cost Per Hour?

For 800W consumption:

Convert to kW: 800W ÷ 1000 = 0.8kW

Calculate hourly cost

At $0.15/kWh: 0.8kW × 1 hour × $0.15 = $0.12 per hour

How Many kWh Does a House Use Per Day?

The average US household uses about 30 kWh per day.

Monthly usage of 900 kWh ÷ 30 days = 30 kWh daily average

Average daily household consumption varies by:

• House size
• Number of occupants
• Climate
• Appliance efficiency

References:

• U.S. Energy Information Administration (EIA) – www.eia.gov
• Department of Energy – www.energy.gov
• Environmental Protection Agency – www.epa.gov/energy

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