EV charging time calculator UK
Estimate charging duration from battery energy needed and sustained charger power. Check the formula, worked example and limits before using your own figures.
Enter your figures
Constant-power charging duration
Inputs changed. Select Calculate result to update your estimate.
Use your actual figures. Any prefilled price, fee, rate or return is an editable illustration, not a current product quote. Constant sustained power only. Maximum advertised charging power may not persist; battery tapering, temperature and vehicle limits can make actual sessions longer.
How the ev charging time calculator uk works
Hours = battery capacity × charge increase ÷ (input power × efficiency).
Data basis: mathematical formula using your inputs. Example prices and rates are illustrative, not current market quotes.
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Worked example: ev charging time
This illustration uses the calculator’s example inputs. It is not a quote or a recommended financial decision.
- Usable battery capacity (kWh)
- 60
- Starting charge (%)
- 20
- Target charge (%)
- 80
- Sustained input power (kW)
- 7
- Charging efficiency (%)
- 90
Constant-power charging duration: 5.71 hours
Hours = battery capacity × charge increase ÷ (input power × efficiency).
EV charging time: questions answered
What does the ev charging time calculation include?
Hours = battery capacity × charge increase ÷ (input power × efficiency). Use your actual figures. Any prefilled price, fee, rate or return is an editable illustration, not a current product quote. Constant sustained power only. Maximum advertised charging power may not persist; battery tapering, temperature and vehicle limits can make actual sessions longer.
Using your result
Example inputs are a starting point. Replace them with your figures and select Calculate result. Results are rounded for display; calculations use unrounded values.
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