EV Charging Cost Calculator
Estimate energy needed to charge an EV pack and multiply by your $/kWh rate. Default 75 kWh battery from 20% SOC at $0.15/kWh fills 60 kWh for about $9. Optional trip miles use efficiency. Not a utility bill.
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How to estimate EV charging cost
- Enter battery capacity in kWh and starting state of charge percent.
- Type your electricity rate per kWh.
- Set efficiency mode and value if you model a trip distance.
- Read kWh needed and estimated cost. Optional charger kW shows ideal hours. Nothing is uploaded.
EV charging cost
kWh needed times rate
| Capacity | Usable pack kWh label |
|---|---|
| SOC | Start charge percent; fill to 100% implied |
| Rate | $/kWh you type, not a live tariff |
| Efficiency | mi/kWh or kWh/100 mi for trip mode |
| Default cost | 60 kWh × $0.15 ≈ $9 fill from 20% |
| Approval | Estimate only. Not a utility contract. |
kWh to fill
Energy needed defaults to capacity × (1 − SOC/100). Seventy-five kWh from 20% SOC is 60 kWh to full.
Rate multiply
Cost is kWh times the typed $/kWh. Peak/off-peak schedules are not loaded automatically.
Trip miles optional
Enter miles with efficiency to estimate kWh for a drive instead of a full SOC fill. mi/kWh divides miles by efficiency; kWh/100 mi multiplies accordingly.
Ideal charge time
Optional charger kW divides kWh for rough hours. Real curves taper; this is not a session log.
What cost to fill 75 kWh from 20% at $0.15/kWh?
About $9 for 60 kWh before charging losses. The page shows exact arithmetic on your inputs.
Does the page load my utility tariff?
No. You type the $/kWh rate manually.
What is mi/kWh efficiency mode?
Trip kWh equals miles divided by mi/kWh when you enter a distance.
Are DC fast charging losses included?
No. Type the kWh you expect to buy or use SOC fill mode for a simple estimate.
Can I estimate charge time?
Optional charger kW gives ideal hours = kWh divided by kW, without taper modeling.