kWh Cost Calculator
Enter any amount of electricity in kWh and your local rate to see the cost instantly. Rate defaults come from official government data — override with your own bill rate for a personalised estimate.
Last verified: April 27, 2026
Your estimate
- Total cost
- $43.63
- Cost per kWh
- $0.1745
- Daily cost (30-day average)
- $1.45
Estimate only. Does not include fixed charges, taxes, or delivery fees.
How this is calculated
Electricity cost is calculated by multiplying the energy consumed by the rate per kilowatt-hour.
Cost = kWh used × Rate per kWh
Example: 250 kWh × $0.1745/kWh = $43.63Assumptions
- Rate is assumed constant (no tiered or time-of-use pricing)
- Output excludes fixed monthly charges, delivery fees, and taxes
- Currency matches the selected country
- Daily cost assumes the entered kWh covers a 30-day period
Common scenarios (US average rate)
| Scenario | kWh/month | Est. cost |
|---|---|---|
| Small apartment (1 bed) | 500 | $87.25/mo |
| Average US home | 899 | $156.88/mo |
| Large home (4+ bed) | 1,500 | $261.75/mo |
| Home + EV charging | 1,200 | $209.40/mo |
| Home + electric pool pump | 1,050 | $183.23/mo |
Based on US average residential rate of $0.1745/kWh (EIA, 2026-04-27).
Frequently asked questions
How do I find my exact electricity rate? ▾
Look at your most recent electricity bill. Divide the total energy charge by the total kWh used to get your effective rate. Many bills also show a $/kWh line item directly.
Does this include taxes and fixed fees? ▾
No — this calculates pure energy cost. Your actual bill will also include fixed monthly charges, distribution fees, and taxes, which vary by utility and location.
What is a typical electricity rate in the US? ▾
The US average residential rate is approximately $0.1745/kWh as of early 2026, per the EIA. Rates range from under $0.10/kWh in Louisiana to over $0.30/kWh in Hawaii.
What is a kilowatt-hour (kWh)? ▾
A kilowatt-hour is the energy used by a 1,000-watt device running for one hour. For example, a 100-watt bulb uses 0.1 kWh per hour, or 1 kWh over 10 hours.
Sources
- U.S. Energy Information Administration — Electric Power Monthly — US average residential electricity rate ($0.1745/kWh) (last checked 2026-04-27)
- Ofgem — Energy Data and Research Portal — UK electricity rate (£0.2750/kWh) (last checked 2026-04-27)
- Natural Resources Canada — Electricity Rates — Canadian rate (C$0.1850/kWh) (last checked 2026-04-27)
- Australian Energy Regulator — Australian rate (A$0.3200/kWh) (last checked 2026-04-27)