Electric Vehicle Charging Time Calculator
Estimate AC or DC charging time, compare charger limits and check how much charge fits into an overnight AC window.
Your results
Transparent by designA clearer picture starts here.
Review the example inputs, then calculate. We show the assumptions alongside your result.
Why is this an estimate?
DC estimates use a simplified two-stage curve, not a verified vehicle charge curve. Battery temperature, starting SoC and power sharing can materially change the session.
Read our methodologyEVVerity estimates are informational and are not a substitute for a professional battery diagnostic or pre-purchase vehicle inspection.
Compare your monthly charging budget
Use your home/public mix to check charging tariffs, subscription break-even and home charger payback.
Compare home and public charging →See how the calculation works
DC estimates use a simplified two-stage curve, not a verified vehicle charge curve. Battery temperature, starting SoC and power sharing can materially change the session.
Example: the lower compatible power limit matters
Adding 36 kWh with a 7.4 kW AC charger, an 11 kW vehicle AC limit and 10% charging losses takes approximately 5.4 hours in the linear scenario. The vehicle cannot use the charger’s advertised power if its own compatible limit is lower.
Where to get useful inputs
- Use the vehicle’s AC limit for AC and its DC limit for DC.
- Check the actual power available from the supply, charger and vehicle together.
- For DC, review the average-power factor. Above 80%, this simplified model further reduces assumed power; it is not a model-specific charging curve.
Why does the DC estimate differ from capacity divided by peak power?
Peak power is not normally sustained across a whole charging session. This tool exposes a simplified taper assumption. Battery temperature, start charge and the vehicle’s actual curve can materially change time.
Method and examples reviewed . Vehicle specifications carry their own source dates.
Methodology, assumptions & confidence →Check a four-hour home charging window
Original EVVerity worked scenario. Inputs are illustrative, not measured vehicle results or market prices.
- Choose AC, usable capacity 60 kWh, start 20%, target 80%, charger 7.4 kW, vehicle AC limit 11 kW and loss 10%. Time is about 5 h 25 min.
- Enter an available window of 4 hours: the scenario reaches 64.4%, with 9.36 kWh still needed to reach 80%.
- Try an 11 kW compatible supply: the same target takes about 3 h 39 min. A 22 kW station gives no further improvement while the car limit stays 11 kW.
What the result helps you decide
The higher rate is useful only when the car, supply and installation support it. The window assumes uninterrupted charging and does not verify cheap-tariff eligibility.
Work through AC, DC and charging-window examples →Example checked .
Will an overnight charging window reach my target?
Enter your available hours in AC mode to estimate the charge level when that window ends. The result stops at your chosen target, so a longer window never silently assumes you charge to 100%. Leave the field blank if you only need the time to target. Keep one scenario, change the charger power and compare both results on this page.
Worked example: a 60 kWh usable battery starts at 20%, with an 80% target, a 7.4 kW charger and 10% losses. Four uninterrupted hours store 7.4 × 0.90 × 4 = 26.64 kWh. That reaches about 64.4%, leaving 9.36 kWh to the target. The complete top-up needs about 5 hours 25 minutes. With a compatible 11 kW supply, charger and vehicle, the same target fits in about 3 hours 39 minutes.
These are constant-power planning scenarios. Check the actual cheap-rate hours and charging restrictions in your tariff. This tool does not read a tariff, control charging or predict the exact session.
7.4 kW vs 11 kW vs 22 kW charging time
Use the lowest compatible limit among the supply, charger and car. A 22 kW AC post cannot make an 11 kW onboard charger accept 22 kW. These linear examples add 36 kWh to an illustrative 60 kWh usable pack, from 20% to 80%, with 10% losses and an 11 kW vehicle AC limit. Times are rounded up to the next minute.
| Available charger power | Power used by model | Calculated time |
|---|---|---|
| 2.3 kW | 2.3 kW | 17 h 24 min |
| 7.4 kW | 7.4 kW | 5 h 25 min |
| 11 kW | 11 kW | 3 h 39 min |
| 22 kW | 11 kW vehicle limit | 3 h 39 min |
How long does 10–80% DC charging take?
The battery-energy change is 70% of usable capacity, but dividing it by advertised peak power assumes that peak is sustained throughout. For a 60 kWh example, 42 kWh must be added. The calculator lets you lower the average-power assumption and separately models the slower region above 80%. Its default factor is an editable scenario, not a measured charging curve.
Use documented data for the exact battery and conditions when comparing vehicles. Temperature, the starting charge, charging-system limits and shared power can change the session. A DC estimate does not establish compatibility with a connector or replace an operator availability check.
kW and kWh answer different questions
kW is power: the rate of energy transfer. kWh is energy: the amount added or billed. In a constant-power example, 7 kW for two hours transfers 14 kWh before any separately modelled losses. Charging from a part-full battery takes a different amount of energy from an empty-to-full comparison.
For overnight planning, compare the energy your driving uses with the hours and compatible power actually available. Have electrical-installation suitability assessed by a qualified installer; this timing calculator does not assess a household circuit.
Sources for the additional guidance
Reviewed . References are scoped to the statements above; viewing questions are EVVerity editorial guidance.
Keep the picture in focus
All tools →Read the relevant evidence
- Compare UK home charger installation quotes
- How much does it cost to charge an electric car?
- Can You Own an Electric Car Without Home Charging?
- Does Fast Charging Damage an EV Battery?
- How Long Does It Take to Charge an Electric Car? AC and DC Worked Examples
Apply this to a model
Check the model’s battery references, charging equipment and viewing checklist. Match the year and original market to the car you are considering.