EV Charging Time and Cost Planner

Estimate electric vehicle charging time, electricity cost, charging losses, and recovered range from your battery and charger settings.

Set the charge window

Tell the planner how much usable battery energy you want to add and what the charger costs.

Start with a charging scene

Charge window

The battery percentage before and after this session

Currency Choose the currency for the local price and total cost.

Energy runway

A clear plan for this session

Balanced charge
Battery charge scene showing held and added energy
Already stored 32%Target charge 80%
Estimated time4 h 20 min7.4 kW
Energy into battery28.8 kWh
Energy from grid32 kWh
Charging losses3.2 kWh
Estimated cost$9.28
Range recovered160 km

Add 28.8 kWh to recover about 160 km. At 7.4 kW, the estimate is 4 h 20 min and the session costs $9.28.

How the estimate worksBattery energy = usable capacity × charge window. The local price starts from an approximate EUR price multiplied by the currency factor. Grid energy includes charging losses, so time uses grid energy / charger power and cost uses grid energy × local price.
Zoom 100%
Utilities Studio

Want this utility on your website?

Customize colors and dark mode for WordPress, Notion or your own site.

Go Ahead

Frequently Asked Questions

How does the EV charging time calculator estimate the session?

It multiplies usable battery capacity by the difference between the target and starting state of charge. It then accounts for charging efficiency and divides grid energy by the charger power you enter.

Why is grid energy higher than energy stored in the battery?

Charging is not perfectly efficient. The efficiency input represents the share of electricity that reaches the battery, so the planner includes the remainder as charging losses.

Does the result include the charging curve of my car?

No. The estimate uses the sustained charger power you enter. Real vehicles may reduce power near a high state of charge, and the charger or installation may also limit power.

How is recovered range calculated?

The planner divides battery energy added by vehicle consumption in kilowatt hours per 100 kilometres. It is an estimate of usable driving range, not a promise about a route or weather conditions.

How does the currency selector change the price?

Each currency has an offline reference factor against the euro. Switching currency converts the visible electricity price and total cost while keeping the same approximate tariff. Update the price if your local rate differs because exchange rates and electricity tariffs change.

# Plan the Energy Behind an EV Charging Session

This planner turns a charge window into a practical estimate. Enter the usable battery capacity, starting and target charge, sustained charger power, efficiency, price, and vehicle consumption to see what the grid supplies, how long the session may take, what it costs, and how much range the battery can recover.
kWh Battery and grid energy
Minutes Estimated session time
Local Cost at your tariff

# Battery Energy and Grid Energy Are Different

The battery receives only part of the electricity drawn from the grid. The calculator divides energy added to the battery by charging efficiency to account for losses in the onboard charger, cable, battery temperature management, and related equipment. Use a realistic sustained power value because a connector rating is not always the power a vehicle can hold.
What you enter What the planner does What you get
Usable capacity and charge windowCapacity × (target charge − starting charge)Energy stored in the battery
Battery energy and efficiencyBattery energy ÷ efficiencyEnergy drawn from the grid
Grid energy and charger powerGrid energy ÷ charger powerEstimated charging time
Grid energy and electricity priceGrid energy × priceEstimated session cost

# Read the Estimate as a Planning Range

A simple power estimate is most useful for comparing scenarios and deciding whether a session fits your parking window. It does not model the vehicle specific charging curve, battery temperature, queue time, demand charges, taxes, subscriptions, or a charger that is shared with another vehicle.
Use sustained power for a more honest estimate
If your car reaches a high peak only briefly, enter the power it can maintain through most of the charge window. For a conservative plan, slightly reduce the power or add time after reading the result.
Use the estimate as a planning guide: real sessions can vary when charging power tapers, temperatures change, or the vehicle shares a connection.

Bibliographic References

More utilities from Motor Vehicle Tools and Calculators

Braking Distance Calculator for Cars and Motorcycles

Estimate reaction, braking, and total stopping distance from speed, reaction time, road grip, and gradient for cars and motorcycles.

Use Tool

Real Fuel Consumption Calculator for Cars and Motorcycles

Calculate real gasoline, diesel, or electric consumption from distance and fuel added. Compare cost per 100 km and check the result against the official figure.

Use Tool

Car and Motorcycle Gear Ratio RPM Speed Calculator

Calculate vehicle speed by gear from engine RPM, primary drive, final drive, gear ratios, and wheel diameter for cars and motorcycles.

Use Tool

Tire Pressure Converter

Convert PSI, bar, kPa and kgf/cm² for car and motorcycle tire readings, with clear axle notes and no invented pressure recommendations.

Use Tool

Motorcycle Skid Mark Speed Estimator

Estimate a motorcycle speed range from skid mark length, surface friction, grade, and which brake left the mark. Educational only, not an accident reconstruction.

Use Tool