How far can an e-bike really go? Range explained, with a calculator
Updated October 2026 · figures from the 147 e-bikes in our catalog
Range is the number e-bike brands advertise hardest and the one most likely to disappoint. The claims aren’t lies, but they’re usually measured in the best conditions: low assist, flat ground, a light rider, mild weather. Your range depends mostly on two things: how much energy the battery holds, and how much you use per mile.
Battery size, in watt-hours
Battery capacity is measured in watt-hours (Wh). It’s the honest number, because it doesn’t depend on test conditions. If a brand gives volts and amp-hours instead, multiply them: a 48 V, 15 Ah battery holds 720 Wh. The typical bike in our catalog carries a 720 Wh battery.
How much energy you use per mile
As a rough guide, riding on pavement uses about 10–15 Wh per mile on low assist, 15–25 Wh at medium to high assist, and 25–35 Wh mostly on throttle. Hills, a heavier load, headwinds, cold weather, high speed and low tire pressure all push it up. Speed matters most: air resistance climbs steeply above 20 mph.
Estimate your range
How to get more range
- Use a lower assist level, and save the throttle for starts.
- Keep tires at the upper end of their pressure range for pavement.
- Ride a little slower: 16–18 mph uses much less energy than 25 mph.
- Keep the battery warm in winter: store and charge it indoors.
- For long commutes, charge at work rather than buying a second battery.
On our results pages we compare each bike’s rated range against your round trip plus a 30% buffer, so a short claim is flagged before it becomes a problem. Take the quiz to see it for your ride.
Common questions
How many miles does an e-bike battery last on one charge?
Commonly 20–50 miles of real riding, depending on battery size and how you ride. A 700 Wh battery at medium assist typically covers 25–35 miles; in low assist on flat ground, more.
Does throttle use drain the battery faster?
Yes, usually much faster than pedal assist, often 25–35 Wh per mile, because the motor does all the work.
Does cold weather reduce e-bike range?
Yes. Lithium batteries deliver less energy when cold, and range can drop noticeably below about 40°F. Keeping the battery indoors until you ride helps.