How to Calculate Estimate Charging Time of Electric Vehicle

Electric Vehicle Charging Time Calculator

Enter the battery capacity and charge level along with the charging power below.

Battery Capacity (kWh): Charger Power (kW): Current Charge Level (%):

Estimating Charging Time for Electric Vehicles

Determining the time required to charge an electric vehicle (EV) battery depends on several key factors, such as charging power, battery size, and the current charge level. These factors collectively influence the charging time.

The capacity of an EV battery is measured in kilowatt-hours (kWh), which indicates the amount of energy it can store. Charging power, on the other hand, determines the speed of the charge and is measured in kilowatts (kW).

To calculate the estimated charging time for an electric car, you can use the following formula:

                  Charge Time = (Battery Capacity / Charge Power) × 0.9(alert-success)

In simpler terms, the charging time in hours is obtained by dividing the battery's size in kilowatt-hours by the charging power and multiplying it by 0.9, representing the average power efficiency.

Let's consider an example to estimate the charging time for a 2021 Tesla Model 3 with a 50 kWh battery capacity using a 3.7 kW home charger.

Charge Time = (50 kWh / 3.7 kW) × 0.9

Charge Time = (50 kWh / 3.7 kW) × 0.9

Charge Time = 15.015 hours

Therefore, it will take approximately 15 hours to fully charge a Tesla Model 3 with a 50 kWh battery using a 3.7 kW home charger.

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It's worth noting that most EV batteries are not completely depleted when charging begins, so charging from 0% to 100% capacity is not always necessary. Charging to a partial capacity can reduce the overall charging time.

Home chargers typically have a capacity of 7.7 kWh or lower, while public chargers often fall into the fast or rapid charging range of 11 kW to 50 kW. Moreover, chargers delivering 100 kW or higher charging power are increasingly common.

For more information on the cost of charging an electric vehicle at home, you can explore our charging cost calculator.

To get an idea of average charging times for EV batteries using different chargers, refer to the chart below:

Battery Capacity (kWh)	Charger
	2.4 kW	3.7 kW	7.7 kW	11 kW	22 kW	50 kW	100 kW	120 kW
5 kWh	2h 19m	1h 31m	0h 44m	0h 31m	0h 16m	0h 7m	0h 4m	0h 3m
10 kWh	4h 38m	3h 1m	1h 27m	1h 1m	0h 31m	0h 14m	0h 7m	0h 6m
15 kWh	6h 57m	4h 31m	2h 10m	1h 31m	0h 46m	0h 20m	0h 10m	0h 9m
20 kWh	9h 16m	6h 1m	2h 54m	2h 2m	1h 1m	0h 27m	0h 14m	0h 12m
25 kWh	11h 35m	7h 31m	3h 37m	2h 32m	1h 16m	0h 34m	0h 17m	0h 14m
30 kWh	13h 54m	9h 1m	4h 20m	3h 2m	1h 31m	0h 40m	0h 20m	0h 17m
35 kWh	16h 13m	10h 31m	5h 4m	3h 33m	1h 47m	0h 47m	0h 24m	0h 20m
40 kWh	18h 32m	12h 1m	5h 47m	4h 3m	2h 2m	0h 54m	0h 27m	0h 23m
45 kWh	20h 50m	13h 31m	6h 30m	4h 33m	2h 17m	1h	0h 30m	0h 25m
50 kWh	23h 9m	15h 1m	7h 13m	5h 4m	2h 32m	1h 7m	0h 34m	0h 28m
55 kWh	25h 28m	16h 31m	7h 57m	5h 34m	2h 47m	1h 14m	0h 37m	0h 31m
60 kWh	27h 47m	18h 2m	8h 40m	6h 4m	3h 2m	1h 20m	0h 40m	0h 34m
65 kWh	30h 6m	19h 32m	9h 23m	6h 34m	3h 17m	1h 27m	0h 44m	0h 37m
70 kWh	32h 25m	21h 2m	10h 7m	7h 5m	3h 33m	1h 34m	0h 47m	0h 39m
75 kWh	34h 44m	22h 32m	10h 50m	7h 35m	3h 48m	1h 40m	0h 50m	0h 42m
80 kWh	37h 3m	24h 2m	11h 33m	8h 5m	4h 3m	1h 47m	0h 54m	0h 45m
85 kWh	39h 22m	25h 32m	12h 16m	8h 36m	4h 18m	1h 54m	0h 57m	0h 48m
90 kWh	41h 40m	27h 2m	13h	9h 6m	4h 33m	2h	1h	0h 50m
95 kWh	43h 59m	28h 32m	13h 43m	9h 36m	4h 48m	2h 7m	1h 4m	0h 53m
100 kWh	46h 18m	30h 2m	14h 26m	10h 7m	5h 4m	2h 14m	1h 7m	0h 56m
110 kWh	50h 56m	33h 2m	15h 53m	11h 7m	5h 34m	2h 27m	1h 14m	1h 2m
120 kWh	55h 34m	36h 3m	17h 19m	12h 8m	6h 4m	2h 40m	1h 20m	1h 7m
130 kWh	60h 12m	39h 3m	18h 46m	13h 8m	6h 34m	2h 54m	1h 27m	1h 13m
140 kWh	64h 49m	42h 3m	20h 13m	14h 9m	7h 5m	3h 7m	1h 34m	1h 18m
150 kWh	69h 27m	45h 3m	21h 39m	15h 10m	7h 35m	3h 20m	1h 40m	1h 24m

Estimating the charging time for your electric vehicle can help you plan and manage your charging needs more effectively. By understanding these factors, you can ensure your EV is charged efficiently and ready for your next journey.

Recommended Automotive Resources

Here are some helpful automotive resources for your convenience:

1. Electric Vehicle Charging Cost Calculator: Estimate the cost of charging an electric vehicle at home using this calculator.

2. Electric Vehicle Fuel Savings Calculator: Calculate the potential fuel cost savings when driving an electric vehicle compared to a gas-powered vehicle.

3. Liters per 100 Kilometers Fuel Consumption Calculator: Convert fuel consumption from liters per 100 kilometers to kilometers per liter using this handy calculator.

4. Kilometers per Liter Fuel Economy Calculator: Calculate the fuel economy in kilometers per liter for your vehicle.

5. Gas Mileage Calculator – Estimate Fuel Economy: Use this calculator to estimate the fuel efficiency of your vehicle and calculate gas mileage.

Feel free to click on the links above to access these automotive resources and enhance your knowledge about electric vehicles, fuel efficiency, and more.