EV Charging Time Calculator
Calculate how long it takes to charge your electric vehicle. Works for Tesla, Nissan Leaf, Chevy Bolt, and all EVs.
Calculate Charging Time
How does this work?
Formula: Time (hours) = (Battery kWh × Charge % needed) / (Charger kW × Efficiency)
Example: 75 kWh battery, charge from 20% to 80%, using 7.4 kW charger at 90% efficiency:
Time = (75 × 0.60) / (7.4 × 0.90) = 6.8 hours
Note: Charging slows down significantly above 80% to protect battery health.
EV Charging FAQs
What's a typical home charger power?
Most home Level 2 chargers are 7.4 kW (240V, 32A circuit). Some upgraded home chargers can deliver 11 kW or more. Standard wall outlets (Level 1) provide only 1.4 kW.
Why charge to only 80%?
Charging above 80% is significantly slower due to battery protection mechanisms. For daily use, charging to 80% maximizes battery lifespan and is faster. Only charge to 100% when you need the full range for long trips.
What about DC fast charging?
DC fast chargers (50-350 kW) can charge much faster than home chargers. However, charging speed varies based on battery temperature, current charge level, and the vehicle's maximum charging rate. This calculator works for all charging types.
Common EV battery capacities
Tesla Model 3: 50-75 kWh | Nissan Leaf: 40-62 kWh | Chevy Bolt: 65 kWh | Tesla Model S: 75-100 kWh | Ford Mustang Mach-E: 68-91 kWh | VW ID.4: 62-82 kWh