The cost per kWh is calculated by dividing your electricity bill by the total number of kilowatt-hours (kWh) consumed. Simply put, Cost per kWh = Total Electricity Bill ÷ Total kWh Used.
For example, if your monthly electricity bill is $120 and you consumed 900 kWh, the cost per kWh would be:
$120 ÷ 900 kWh = $0.13 per kWh
Knowing this value helps you understand your energy expenses and identify ways to save money on your electricity bill
How to Calculate kWh per Day
Knowing your daily consumption helps you spot trends related to weather or work habits. Use the total kWh from your bill and the number of days in the billing cycle.
- Step 1: Get your Total kWh consumed from your bill.
- Step 2: Find the Number of Days in the billing period (e.g., 30 days).
- Step 3: Divide the total kWh by the number of days.
How to Calculate Cost Using kWh?
To calculate your electricity cost, follow these steps:
- Determine the appliance’s wattage (check the label).
- Multiply by the hours used per day.
- Convert watt-hours to kWh by dividing by 1,000.
- Multiply kWh by your electricity rate ($/kWh).
Example:
- Appliance: 1,200 W microwave
- Usage: 2 hours/day
- Rate: $0.13/kWh
Calculation:
1,200 W × 2 hours = 2,400 Wh = 2.4 kWh
2.4 × $0.13 = $0.31/day
Converting kWh to Cost?
Converting kWh to cost is straightforward:
Cost = kWh Used × Electricity Rate ($/kWh)
Tips:
- Always check your electricity provider for the current rate.
- Some states have tiered pricing – higher usage may cost more per kWh.
- Use online calculators for quick estimates.
How to Calculate kWh per Month?
To find monthly kWh, sum all daily usage or multiply daily usage by the number of days in the month:
Monthly kWh = Daily kWh × Number of Days
Example:
- Daily usage: 30 kWh/day
- Month: 30 days
- Monthly kWh = 30 × 30 = 900 kWh
Then multiply by your rate to estimate the monthly electricity cost:
900 kWh × $0.13 = $117/month
Discover our free online power calculator tools today!