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EV charging time calculator

Estimate how long it takes to charge an electric vehicle between two battery levels.

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The EV charging time calculator turns Battery capacity (kWh), Charger power (kW), Current charge (%), Target charge (%) into Charging time (hours), instantly and for free. For instance, with Battery capacity (kWh) = 60 kWh, Charger power (kW) = 7.4 kW, Current charge (%) = 20% and Target charge (%) = 80% it returns Charging time (hours) = 5.405.

How to use it

  1. Enter your values: Battery capacity (kWh), Charger power (kW), Current charge (%), Target charge (%).
  2. Read the result instantly: Charging time (hours).

Frequently asked questions

How does the EV charging time calculator work?

It takes Battery capacity (kWh), Charger power (kW), Current charge (%) and Target charge (%) and derives Charging time (hours) from them. The calculation is live as you type, so the result updates on every change.

Which values does the calculator ask for?

4 values: Battery capacity (kWh) (kWh), Charger power (kW) (kW), Current charge (%) (%) and Target charge (%) (%). Nothing else is required — no account, no file upload.

What does a typical calculation look like?

With Battery capacity (kWh) = 60 kWh, Charger power (kW) = 7.4 kW, Current charge (%) = 20% and Target charge (%) = 80%, the calculator returns Charging time (hours) = 5.405. Those figures come from running this exact tool, so you can reproduce them by entering the same values.

How much does the result change with different inputs?

It moves a lot. Using Battery capacity (kWh) = 120 kWh, Charger power (kW) = 14.8 kW, Current charge (%) = 22% and Target charge (%) = 88% instead, Charging time (hours) goes from 5.405 to 5.946 — which is why it is worth testing a few scenarios rather than trusting a single figure.

Which units should I enter the values in?

Enter Battery capacity (kWh) kWh, Charger power (kW) kW, Current charge (%) % and Target charge (%) %.

What does it give for smaller values?

Scaled down to Battery capacity (kWh) = 30 kWh, Charger power (kW) = 3.7 kW, Current charge (%) = 18% and Target charge (%) = 72%, Charging time (hours) comes out at 4.865. The relationship is worth checking at both ends before you rely on a single result.

When would I actually use this?

Deciding between two cars, or between keeping one and replacing it: fuel or charging, insurance, depreciation and what a kilometre really costs.

What is the most common mistake?

Comparing on fuel alone. Depreciation is usually the largest line in the first years and dwarfs the difference in consumption between two comparable cars.

What is the difference between the EV charging time calculator and the EV charging cost calculator?

This one returns Charging time (hours); the EV charging cost calculator returns Charging cost. That is the whole difference — open the one whose figure you need.

Is there a tool for the next step?

Flight Time Calculator is the closest one after this: Estimate flight duration from route distance and cruise speed, with taxi/climb/descent overhead.

Further reading

All guides →
How-toHow Long Does It Take to Charge an EV?Charging time is battery energy needed divided by charger power. See how home AC and public DC compare, and why fast charging slows past 80%.How-toHow Much Does It Cost to Charge an Electric Car?Charging cost is energy added times your electricity price. Here's the sum, home vs public charging, cost per 100 miles, and how it compares to gas.How-toHow Long Will My Road Trip Take?Estimate a drive's real duration: divide distance by average speed, then add stops for fuel, food and rest. A simple method with a worked example.ExplainerWhat Affects an Electric Car's Range?Battery size, efficiency, speed, cold weather and terrain all move an EV's real range far from the sticker figure. Here's how each factor works.How-toHow to Estimate Flight Time: Distance, Cruise Speed and OverheadEstimate a flight's duration by dividing the great-circle distance by cruise speed, then adding taxi, climb and descent overhead. A simple, reliable method.ComparisonElectric or Petrol: From How Many Miles a Year Does It Pay Off?The break-even is a division, and the number underneath it moves more with where you charge than with which country you live in. Electricity and fuel prices from 2025 and 2026, the arithmetic in full, and the point at which an electric car stops saving anything at all.