E-bike range depends on how much you pedal, the assist level, hills, wind, tyre pressure and your weight. Consumption usually falls between 10 and 30 watt-hours per mile.
How to use the E-Bike Range Calculator
- I want to find
- Battery given as
- Battery capacity (Wh)
- Battery voltage (V)
- Battery capacity (Ah)
- Target range
- Your consumption
- Custom consumption (Wh/km)
Results update as you type, every field has its own unit menu, and everything is calculated in your browser.
How it works
Enter the battery size (or voltage and amp-hours), or choose to find the battery needed for a range.
Inputs explained
| Field | What to enter |
|---|---|
| I want to find | Choose one: Range from my battery, Battery needed for a range |
| Battery given as | Choose one: Watt-hours, Volts and amp-hours |
| Battery capacity (Wh) | A number |
| Battery voltage (V) | A number |
| Battery capacity (Ah) | A number |
| Target range | Units: km, mi, m, yd |
| Your consumption | Choose one: Efficient – light assist, flat (15 Wh/mi), Average (20 Wh/mi), Demanding – full assist, hills (30 Wh/mi), Custom (Wh/km) |
| Custom consumption (Wh/km) | A number |
What each result means
- Estimated range = [Battery energy]÷[C]×1000
- Range – efficient = [Battery energy]÷9.3205679×1000
- Range – demanding = [Battery energy]÷18.641136×1000
- Battery needed = [Target range]÷1000×[C]
- Battery needed with 20% reserve = [Target range]÷1000×[C]×1.2
Example values
How the main result changes when Battery capacity changes and everything else stays at the example values above:
| Battery capacity (Wh) | Estimated range (km) |
|---|---|
| 250 | 20.117 |
| 375 | 30.175 |
| 500 | 40.234 |
| 625 | 50.292 |
| 750 | 60.35 |
| 1,000 | 80.467 |
Formula
Battery (Wh) = V × Ah · Range = Wh ÷ consumption · Efficient ≈ 15 Wh/mi (9.3 Wh/km), average ≈ 20 Wh/mi (12.4 Wh/km), demanding ≈ 30 Wh/mi (18.6 Wh/km)
Worked example
Inputs — I want to find: Range from my battery; Battery given as: Watt-hours; Battery capacity (Wh): 500; Your consumption: Average (20 Wh/mi).
Results — Battery energy = 500 Wh; Estimated range = 40.234 km; Range – efficient = 53.645 km; Range – demanding = 26.822 km.
Key terms
- Watt-hour (Wh)
- Energy: one watt for one hour.
Frequently asked questions
How far can an e-bike go?
Typically about 27–80 km (17–50 mi) on a 500 Wh battery at 10–30 Wh per mile.
What uses the most battery?
High assist, hills, headwinds and heavy loads.
Does cold weather reduce range?
Yes – lithium batteries lose 10–30% capacity in the cold.
How do I extend range?
Pedal more, use lower assist, keep tyres pumped up.