What Is the E-Bike Range Calculator?
This tool estimates how far your electric bike can travel on a single charge. It combines your battery's stored energy with how efficiently your bike uses that energy per kilometer. Whether you ride a commuter, a cargo e-bike, or a mountain e-bike, knowing your realistic range helps you plan rides and avoid running out of charge.
How to Use It
Enter three values: your battery's voltage (commonly 36 V, 48 V, or 52 V), its capacity in amp-hours (Ah), and your energy consumption in watt-hours per kilometer (Wh/km). The calculator multiplies voltage by capacity to find total battery energy, then divides by consumption to estimate range in kilometers and miles.
The Formula Explained
Battery energy in watt-hours is voltage multiplied by capacity: \(\text{Wh} = \text{V} \times \text{Ah}\). For example, a 36 V, 10 Ah battery holds 360 Wh. Range is then total energy divided by the energy used per kilometer:
$$\text{Range} = \text{Wh} \div (\text{Wh/km})$$
Worked Example
Suppose you have a 36 V battery rated at 10 Ah and your bike uses about 12 Wh per km. Battery energy:
$$36 \times 10 = 360 \text{ Wh}$$Range:
$$360 \div 12 = 30 \text{ km}$$or roughly 18.6 miles on a full charge.
FAQ
What consumption value should I use? Typical e-bikes use 7–15 Wh/km. Lower assist levels, flat terrain, and lighter loads use less; high assist, hills, and headwinds use more.
Why is my real range lower? Cold weather, steep climbs, heavy cargo, fast riding, and an aging battery all reduce real-world range below the theoretical figure.
Does this work for any battery? Yes. As long as you know the voltage and amp-hour rating, the calculator works for any e-bike battery pack.
