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 kWh 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. NEW: CARPLAY Plugged in at a charger? Open EV kWh Calculator on your car's screen, pick the charger type and your battery now and charge-to level from simple lists, and see the time to target, kWh added, estimated cost at your rate and range added, with your car's AC/DC charging limit applied. Nothing to type. 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, plus the time "at constant 150 kW" right underneath, so you see how much the slowdown adds - Your money, your rates: the app starts in your local currency with a typical local electricity rate, so a charge in yen, rupiah or kroner looks right from the first launch - 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, plus the constant-power time for reference - 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) - CarPlay: Quick scenarios, an 8-button charger grid (Home L1/L2, Workplace L2, DC Fast 50-350 kW) and your saved vehicles on the car screen - Custom vehicle support — enter any battery size, including cars without DC fast charging - 38 currencies with typical local rates, including AUD, BRL, CAD, CHF, CNY, CZK, DKK, EUR, GBP, IDR, INR, JPY, KRW, MXN, NOK, NZD, PLN, SEK, THB, TRY, USD, VND, ZAR, and more - Miles and kilometers support - Light and dark mode - Zero data collection — your privacy label says "Data Not Collected" and we mean it ACCESSIBLE TO EVERY DRIVER: - Full VoiceOver support: set your battery range, pick a charger and hear the kWh, time and cost read out - Voice Control: say "Tap Target" or "Tap DC Fast 150" to drive the whole calculator hands-free - Larger Text: results switch to rows at big text sizes, so no number is ever cut off - Increase Contrast, Reduce Motion and Differentiate Without Color are all respected 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 — say, a Model Y against an Ioniq 5 Note: Charge time estimates are approximate. Actual times vary based on temperature, battery condition, state of charge, and vehicle-specific charging curves.