Battery | Range | Uphill | Charging Time

E-Bike Uphill Calculator

Calculates the height, which can be mastered with an e-bike with the support of an electic motor. An electric motor has to perform uphill much more than on a plain. Here can be calculated, which height difference can be made with motor support at which battery size. The horizontal distance hereby is neglected. At a support of 50%, half of the work has to be done by oneself.
Please enter two of the first three values, the remaining value will be calculated. The mass is the driver's mass plus the mass of the bicycle. The energy needed is calculated as mass times height times gravitational acceleration (9.81 m/s²) times support divided by the efficiency factor.

Mass:	lbkg
Height difference:	ftm
Energy needed:	kJWhkWh
Support:	%
Efficiency factor:	%

Example: a person with 70 kilograms (kg) weight and a bike with 20 kg weight add up to 90 kg. With a 200 Wh battery, supporting for 50 percent, up to 1223 meters altitude difference can be mastered. In reality it will be less, since a horizontal distance also has to be covered. This has to be taken into account when planning.

If you often ride on hilly terrain, it might be worth buying an e-bike that has recuperation. This recovers energy when braking and rolling downhill, i.e. recharges the battery. However, this requires a certain type of bike design; only models with a hub motor on the rear wheel without a coaster brake can recuperate. Most e-bikes have mid-engines, which are a little lighter and better balanced. So you need to think carefully about whether a model with the option of recuperation makes sense for you or not. It is of course advisable to try it out beforehand. Further technical advances can be expected in the future, so that models with recuperation may lose their disadvantages and thus become more common. We will see.

Last updated on 06/29/2025. Author: Jürgen Kummer

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