EV Charging Calculator

- May 10, 2025
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Calculate charging costs, time, and range for electric vehicles based on battery capacity, charger power, and electricity rates.

Vehicle Information

kWh
miles/kWh

Charging Parameters

%
%

Charger Information

kW
%
£ per kWh

Advanced Options

About EV Charging

Electric vehicles can be charged at different speeds depending on the charging equipment. Understanding charging times, costs, and efficiency can help you optimise your EV ownership experience.

Charging Types
  • Level 1 (120V): Standard household outlet, typically 1.4 kW to 1.9 kW. Slowest charging option.
  • Level 2 (240V): Dedicated home or public charger, typically 3.3 kW to 19.2 kW. Most common for daily charging.
  • DC Fast Charging: High-powered stations, 50 kW to 350+ kW. Fastest option for long-distance travel.
Home vs. Commercial Charging
  • Home Charging: Typically the most cost-effective option, with rates based on your residential electricity plan.
  • Commercial/Public Charging: Often more expensive than home charging, with rates varying by network and location.
  • Workplace Charging: May be free or subsidised by employers as an employee benefit.
  • Tesla Supercharger: Exclusive network for Tesla vehicles with location-based pricing.
  • Electrify America/EVgo/ChargePoint: Major charging networks with membership options that may reduce per-kWh rates.
Charging Calculation Formulas
  1. Energy Added (kWh): Battery Capacity × (Target SoC - Current SoC) ÷ 100
  2. Charging Time (hours): Energy Added ÷ Charger Power × (100 ÷ Charger Efficiency)
  3. Total Cost (£): Energy Consumed × Electricity Rate
  4. Range Added (miles): Energy Added × Vehicle Efficiency
Factors Affecting Charging
  • Most EV batteries charge fastest between 20% and 80% SoC
  • DC Fast Charging slows down significantly above 80% to protect the battery
  • Charging at home during off-peak hours can reduce costs significantly
  • Battery efficiency decreases in extreme temperatures
  • Preconditioning your battery before fast charging can improve charging speed
  • Older batteries may charge more slowly than newer ones
  • Premium/luxury EVs often support higher charging speeds

Understanding the EV Charging Calculator

The EV Charging Calculator is a handy tool designed for electric vehicle (EV) owners. It helps you figure out important aspects like charging costs, time, and range based on different factors. By inputting your vehicle's battery capacity, charger type, and electricity rates, you can get a clearer picture of your charging needs. This calculator makes managing your EV much easier and more efficient.

Key Features of the Calculator

This calculator has several features that make it useful for EV owners. You can select your vehicle model from various categories, including luxury and mainstream brands. It also allows you to input specific details like battery capacity, vehicle efficiency, and more. Here are some additional features:

  • Calculate costs based on different electricity rates.
  • Track the charging time and energy added to your vehicle.
  • Compare costs between electric and gasoline vehicles.

Inputting Vehicle Information

When using the EV Charging Calculator, you start by entering your vehicle's information. You can choose from a wide range of models or enter custom specifications. It's essential to provide accurate details like battery capacity and efficiency. This way, the calculator can give you the most precise results for your charging needs.

Charging Parameters You Should Know

Next, you’ll set your charging parameters. This includes your current and target state of charge (SoC). Knowing how much charge you need will help the calculator determine how much energy you’ll need to add. This way, you can optimise your charging sessions and ensure you don’t run out of battery at an inconvenient time.

Selecting Charger Information

Another crucial part of the calculator is selecting the type of charger you will use. You can choose between home charging, commercial charging, or fast chargers like Tesla Superchargers. Additionally, specifying the charger type, whether Level 1 or Level 2, provides more accurate estimates for charging time and cost.

Advanced Options for Detailed Calculations

The EV Charging Calculator also offers advanced options for users who want more detailed results. You can adjust settings like decimal places for precision and apply features like charging curves or temperature adjustments. These options let you tailor the calculations to your specific preferences and needs.

Understanding the Results

After entering all the required information, the calculator displays various results, including charging time, total cost, and energy added. You’ll also see details such as the average charging rate and cost per mile. This breakdown helps you understand how your EV charging works and what it means for your wallet.

Learning About EV Charging

Finally, the calculator provides educational content about EV charging. You can learn about different charging types, how home and commercial charging differs, and what factors affect charging times. This information helps you make more informed decisions about managing your electric vehicle.