Tesla Charge Time Calculator


How Tesla Charge Time Calculator Can Help You Improve Your Driving

Tesla charging time

This parameter is not constant, because it depends on a number of variables. First, it is the value of the battery capacity. It can be found out with the help of the Tesla Charge Time Calculator, simply by entering the model of your own electric car. You can look at the vehicle's data sheet, which should contain the necessary information. Capacity is measured in kilowatts per hour (abbreviated as kW⋅h). For example, the Tesla Model 3 has a built-in battery of 82 kW⋅h. You can experiment a bit with the settings to find out interesting information about other electric car models.

Secondly, the charging speed is affected by the capacity of a particular charging station (EVSE). To calculate this value, you need to multiply the line voltage (in the States, it's 240V or 120V) by the amperage the charger is capable of delivering. Often the charger already has the maximum power written on it in kW. The calculation formula will be as follows - multiply the capacity and power figure by a factor of 1000. However, if you use a special Tesla electric car charging calculator, all calculations are easy and simple to do.

Gradations of electric car charging speed

Different electric cars need different time to fully charge the battery, as well as different types of chargers. If we talk about the speed of the charging process, we can distinguish 3 levels:

  • Slow charging, which takes 5-8 hours of time;
  • Semi-quick charging, which lasts 1.5-3 hours of time;
  • Fast charging, which takes about 15 minutes of time.

For the fastest charging you may need a special adapter. It is also worth understanding that certain electric cars have different charging modes: quite fast (DC) and slightly slower (AC).

Formula for calculating the charging speed of the Tesla

There is a simplified formula by which you can calculate the speed of the charging process of an electric car:

Duration = Auto battery capacity (kW⋅h) x 1000 / EVSE power (kW) x 1000.

For example, with a Tesla battery capacity of 82 kW⋅h and a charging power of 6.5 kW, the car will need the following charging time:

Duration = 82000/6500 = 12.6 hours.

These are approximate figures, and for more accurate results you need to use a calculator. This tool is sure to take into account the 10% loss of energy as well as the characteristics of the built-in charging unit.

Varieties of charging stations

The most common and convenient way to charge is with Wall connector home charging stations with a nema 14-50 type socket. These units are mounted in a personal garage, which is very convenient. The owner can decide whether they want a Level 1 or Level 2 type charger. The more expensive chargers will quickly determine the model of the electric car and select the recommended power. Charging station networks offer very fast charging and constant-current power. Tesla cars, for example, come with a proprietary connector, but they are still compatible with J1772 if you pick up the right adapter. Other automakers have their own connectors, which are better to carry in the trunk. This will allow you to recharge the electric car's battery at any station.

If you put the charging station in the garage, then the charging speed will primarily depend on the power of the outlet where the equipment is plugged in. You don't have to move the charger to charge your car at home, because you can get an extension cord.

Before you choose a charger for your garage, home or office, it is better to consult with a professional electrician. The specialist will tell you what equipment is better to choose, how to connect it, what you need for this. All installation work should also carry out a highly qualified electrician versed in safety issues. Only a competent installation of the charging station can provide fast and powerful charging.

Frequently Asked Questions About Tesla Charging Time Calculation

Many electric car owners ask, but what parameters are more important when calculating the exact charging time? In this case, it is necessary to pay attention to the characteristics of the charging equipment and the battery of the car. Based on these indicators, it is possible to know the time required for charging.

The second question is what exactly affects the rate of charging? In addition to the above parameters, you should also take into account the following values: the age and operating temperature of the battery, the limitations of the internal unit, the battery charge level.


With the above formulas, you can quickly calculate the charging time yourself, but it is better to use the Tesla Charge Time Calculator. Why waste precious time when a handy tool will do everything yourself. To appreciate all the advantages of this calculator, a quick glance at other similar services is enough.

How fast does a Tesla charge at home?

Tesla Model Y Standard Range (2021) Tesla Model X Standard Range (2019 - 2020) Tesla Model 3 Standard Range (2019)
40 Amp Charger 4 h 52 min 6 h 15 min 4 h 52 min
16 Amp Charger 9 h 52 min 15 h 47 min 9 h 52 min
32 Amp Charger 4 h 52 min 9 h 52 min 4 h 52 min

Use this calculator to calculate the cost with other conditions.

Tesla home chargers come in a variety of shapes, sizes, and capabilities.

Tesla has an alternative to the Wall Connector. The Mobile Connector plugs into a standard 120-volt outlet and can provide up to 16 amps of power for a charge rate of up 2 kW. You can purchase the mobile connector separately or included in your Tesla purchase. If you're looking for a more powerful charger, take a look at the Tesla Wall connector. The charger plugs into a standard 240-volt outlet and can supply up to 16 amps with a charging speed of up to 7.75 kilowatts - more than enough power to quickly charge your Tesla vehicle. Every new Tesla comes with one of these chargers, but if you need another, they are available for purchase on the Tesla website.