EV Charging Time Calculator
Estimate electric-vehicle charging time using battery size, charge range, charger power, and efficiency.
EV Charging Time measurements
Enter your values, then calculate.
Result
How to calculate ev charging time
Estimate how long an EV needs to charge between two battery percentages at a given charging power.
How the calculation works
The requested percentage change determines the energy added. Dividing that energy by charger power adjusted for charging efficiency gives time.
Example
A 75-kWh battery charged from 20% to 80% on an 11-kW charger at 90% efficiency takes about 4.55 hours.
Frequently asked questions
Does this predict fast-charger tapering?
No. It gives an average-power estimate; real DC charging may take longer because power usually tapers at higher charge levels.
EV Charging Time Calculator
The requested percentage change determines the energy added. Dividing that energy by charger power adjusted for charging efficiency gives time.
Let's understand your ev charging time result.
Calculate a result above and this guide will help you interpret it using this calculator's own formula and explanation.
Pro Tips for EV Charging Time
- Use the power the vehicle can actually accept, not only the station maximum.
- Expect DC fast charging to slow as the battery approaches a high state of charge.
Common EV Charging Time Mistakes to Avoid
- Entering target charge below starting charge produces a negative result and does not represent a charging session.
When to Use This Calculator
Estimate how long an EV needs to charge between two battery percentages at a given charging power.