What this calculator does
E-bike range works out estimated riding range from battery capacity and energy use per distance. Enter your own figures above and the answer updates as you type: nothing is fixed in the code, so the result reflects exactly the numbers you supply.
The formula this calculator evaluates is printed under the tool and explained below, so you can check the working by hand or reuse it in a spreadsheet.
The formula
FormulaUsable energy = battery capacity × (1 − reserve%); range = usable energy / energy use per km
The inputs explained
| Field | What to enter |
|---|---|
| Battery capacity (Wh) | A number, measured in Wh. Starts at 500. |
| Energy use (Wh/km) | A number, measured in Wh/km. Starts at 15. |
| Reserve charge to keep (%) | A number, measured in %. Starts at 10. |
Worked examples
Every figure in the tables below is produced by this page’s own calculator at build time, so the numbers and the tool always agree. Select any row to load that scenario.
How the answer changes with battery capacity
Every other input is held at the calculator’s starting values while battery capacity varies. Select any row to load that scenario into the calculator.