EV Charging Time Calculator
Charging time depends on your battery size, how much you need to add, and how fast your charger delivers power. This calculator estimates the hours needed.
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Last updated June 30, 2026. Results update automatically as you type.
How it works
Energy to add = battery capacity × (target % − start %) ÷ 100. Charging time = energy to add ÷ (charger power × efficiency ÷ 100). Real time can be longer because charging slows down near 100% to protect the battery.
Frequently asked questions
Why does charging slow near 100%?
To protect battery health, EVs taper charging speed above roughly 80%. That is why most people charge to 80% day-to-day and why this estimate is most accurate up to that level.
What charger power do I have?
A standard home wall charger is usually 7 kW. A regular wall socket is ~2 kW (slow). Public rapid chargers range from 50 kW to 350 kW.
Does temperature affect charging time?
Yes — cold batteries charge more slowly. Expect longer times in winter, especially on rapid chargers.
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