EV kWh Calculator - Charge

How many kWh from 20% to 80%? How long will it take? How much will it cost?

Pick your car. Get the answer instantly.

EV Charge Calculator has a built-in database of 186+ electric vehicles across 35+ makes. Select your car, set your current and target battery percentage, choose your charger type, and see the kWh needed, estimated charge time, and cost — all updating in real time as you adjust.

No subscriptions. No ads. No account. No tracking. Pay once, calculate forever.

WHY EV OWNERS LOVE IT:

• Know exactly how many kWh you need before plugging in — stop overpaying at public chargers
• See realistic DC fast charge times with a built-in taper curve model — not the oversimplified "kWh / kW" math that other apps use
• Compare charging costs across 7 sources: home off-peak, home on-peak, workplace, public L2, DC fast, and custom rates
• Works completely offline — no internet connection needed, ever

FEATURES:

• 186+ EV models with verified usable battery capacities
• Instant kWh calculation from any % to any %
• DC fast charge time estimates with 5-segment taper curve
• 10 charger presets: Level 1, Level 2, DC Fast (50-350 kW), plus custom
• Cost comparison across home, workplace, and public charging rates
• 4 quick scenarios: overnight charge, road trip top-up, full charge, emergency top-up
• Save up to 5 vehicles for quick switching (great for multi-EV households)
• Custom vehicle support — enter any battery size
• 36 currency options including AED, AUD, BRL, CAD, CHF, CLP, CNY, COP, CZK, EGP, EUR, GBP, HKD, HUF, IDR, ILS, INR, JPY, KRW, MXN, MYR, NGN, NZD, PHP, PKR, PLN, RUB, SAR, SEK, SGD, THB, TRY, TWD, USD, VND, ZAR, and more
• Miles and kilometers support
• Dark mode by default, light mode available
• Zero data collection — your privacy label says "Data Not Collected" and we mean it

SUPPORTED MAKES:

Tesla, Hyundai, Kia, Ford, Chevrolet, BMW, Mercedes-Benz, Audi, Volkswagen, Rivian, Lucid, Porsche, Nissan, Toyota, Volvo, Polestar, BYD, Genesis, Acura, Cadillac, Chrysler, Fiat, GAC Aion, GMC, Honda, Jaguar, Lexus, Lotus, Mazda, Mini, Nio, Smart, Subaru, Wuling, Xiaomi, Xpeng, and more.

PERFECT FOR:

• New EV owners still learning their car's battery
• Road trippers planning charging stops
• Public charger users who want to know the cost before plugging in
• Home charger users estimating overnight charging needs
• Multi-EV households comparing vehicles
• EV shoppers comparing battery sizes across models

Note: Charge time estimates are approximate. Actual times vary based on temperature, battery condition, state of charge, and vehicle-specific charging curves.