EV charging calculator
Explore overnight home charging and highway fast-charge stops with vehicle presets. Math runs in your browser — nothing is uploaded.
Your vehicle
Pick your car — we fill in battery size, efficiency, and charging limits from typical specs. Estimates assume a 10% starting state of charge (SOC), a 10-hour overnight window for home charging, and a daily charge target of 80% for nickel-based (NMC) battery packs or 100% for LFP battery packs.
Pick a popular US model or enter your own usable capacity. Set starting SOC below to match how empty the battery pack is when you plug in. Home charging uses usable kWh, caps at the vehicle’s onboard AC limit, and includes ~11% AC conversion loss. Some trims offer faster onboard AC (up to 19.2 kW) — edit the fields below to match your car or home setup.
Charging source
Home charging respects your vehicle’s onboard AC limit when a preset is selected. DC fast charging also caps at your car’s maximum DC rate.
At a glance
- Energy rate
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- Range rate
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- Usable range (full)
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- Range added overnight
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- 10 → 80% battery
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- Estimated stop time
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- Charge to
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- Range when you unplug
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- Range at 80%
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- Peak range rate (vehicle)
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- Energy added
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Same charger, different efficiency
| Efficiency | Miles / hour | Overnight range added |
|---|---|---|
| Efficiency | Peak miles / hour | Range at 80% charge |
Recover daily driving
Energy needed to add back a day’s miles, compared to your overnight window and battery size.
| Daily miles | Hours to recover | Overnight fit |
|---|
Educational estimates only. Real charging slows as the battery fills, varies with temperature, and may be limited by your car’s onboard charger or its maximum fast-charge rate. Do not rely on this for trip planning or electrical installation decisions.