E-Bike & E-Scooter Range Calculator
Estimate the real-world range of an e-bike or e-scooter from its battery and your energy use — the pack’s watt-hours divided by consumption, with a realistic usable-charge margin.
Estimated range
How the estimate works
A battery stores energy, and every kilometre you travel spends some of it. Multiply the battery’s nominal voltage by its amp-hour capacity to get its energy in watt-hours, then trim it by the fraction of the pack you actually use. Dividing that usable energy by your average watt-hours-per-distance gives the range.
The strength of this method is that it is honest about the two things that really matter — how much energy you carry and how hard you spend it. Change any input and you can see immediately why a bigger battery, a lighter rider, or an easier route stretches the distance.
Frequently Asked Questions
How is electric range actually calculated?
Range is simply usable battery energy divided by how much energy you use per unit of distance. Battery energy in watt-hours is the pack's nominal voltage multiplied by its capacity in amp-hours, so a 36 V, 10 Ah battery holds about 360 Wh. If you average 12 Wh per kilometre, that 360 Wh carries you roughly 30 km. This calculator does that arithmetic and lets you set how much of the pack you really use.
Why does the calculator ask for a usable percentage?
Lithium batteries last longer if you don't routinely run them to empty, and most riders top up before 0%. Setting usable battery to 80–90% gives a more honest real-world range than assuming you drain every last watt-hour. It also builds in a small safety margin so you are not stranded.
What energy consumption figure should I use?
It depends on the vehicle and how you ride. Pedal-assisted e-bikes are efficient, often 8–15 Wh per kilometre. Stand-up e-scooters are typically 15–25 Wh per kilometre because they carry you with no pedalling. Heavier riders, hills, headwinds, cold weather, and higher speeds all push consumption up, which is why manufacturer range claims are usually optimistic.
Why is my real range lower than the number here?
This is an estimate from steady-state assumptions. Cold temperatures reduce a battery's usable capacity, hills and stop-start city riding raise consumption, and an ageing pack holds less charge than when it was new. Treat the result as a planning figure and leave yourself a margin.
Educational estimate only. Real range depends on rider weight, terrain, wind, temperature, tyre pressure, and battery age — always keep a margin before you rely on it.