What your car and home really cost to run
Cents per kWh, dollars per mile.
Fuel, charging, electricity, road trips — the costs that drip out of your budget a little at a time. These calculators add them up honestly: per mile, per month, per year, so you can compare gas vs electric, home vs public charging, and know what each appliance actually costs.
Energy calculators
- EV charging cost calculator
Home vs public ¢/kWh, session kWh, cost per mile.
- Gas vs EV cost calculator
Annual fuel cost face-off. Per-mile cost and yearly savings.
- Home vs public EV charging
What home charging saves you monthly and yearly.
- Electricity cost calculator
Watts × hours × rate → daily, monthly, yearly cost.
- Appliance electricity cost
Presets or custom watts. What each device really costs to run.
- Car cost per mile calculator
Fuel + insurance + maintenance. Your true all-in per mile.
- Road trip fuel calculator
Distance, MPG, gas price, passengers. Trip cost + split.
Worked examples
- EV home vs public
40 kWh at 16¢ vs 45¢ per kWh.
- Space heater cost
1500W × hours → bill impact.
- What a refrigerator costs to run
150W around the clock at 17¢/kWh — worked.
- 1,200-mile road trip fuel cost
600 miles each way at 30 MPG — worked, split 3 ways.
- True cost per mile: $0.36
Fuel + $1,800 insurance + $1,200 maintenance — worked.
Frequently asked questions
Is an EV actually cheaper than a gas car?
Per mile, usually yes — electricity at 16¢/kWh in an efficient EV runs ~4–5¢/mile vs ~11–13¢/mile for gas at $3.40/gal and 30 MPG. The gas vs EV calculator runs your numbers including your charging mix.
How much does home EV charging save vs public?
Public fast charging often costs 2–3× home rates. At 45¢ vs 16¢ per kWh, a 40 kWh session saves $11.60 — the home vs public calculator annualizes it.
What uses the most electricity in a home?
Usually heating/cooling, water heating, and always-on appliances like refrigerators. The appliance calculator prices any device from its wattage.