7 min read · By StreetRides US Research · First published August 18, 2026 · Last updated August 18, 2026
An e-bike range calculator estimates how far an electric bike travels on one charge, based on battery capacity and the conditions you actually ride in. This one is built from marketplace data rather than a manufacturer claim.
We measured the energy each listing implies it uses. Across 313 listings that published both a battery capacity and a range claim, the median implied consumption is 12.0 watt-hours per mile. The calculator below starts from that figure and adjusts for weight, assist level, terrain, speed, and temperature.
Estimates real-world range from battery capacity and riding conditions, using a median consumption of 12.0 watt-hours per mile measured across 313 listings.
How the calculator works
Range comes down to one equation: usable battery energy divided by energy consumed per mile. We take 90 percent of the stated pack capacity as usable, then divide by an adjusted consumption figure that starts at the marketplace median of 12.0 watt-hours per mile.
Each setting multiplies the consumption figure. Throttle riding raises it most. Cold weather and hills follow. Riding at low assist on flat ground in mild weather lowers it.
How much energy does an e-bike actually use per mile?
Most e-bikes consume between 10 and 20 watt-hours per mile in normal riding. Our marketplace figures put the median implied consumption at 12.0 Wh per mile, with the middle half between 9.9 and 14.4. Riders who use throttle heavily, climb hills, or carry weight land at the high end. Light riders on low assist land at the low end.
| Implied Wh per mile | Listings | Share |
|---|---|---|
| Under 8 (best-case only) | 19 | 6.1% |
| 8-9.9 | 69 | 22.0% |
| 10-11.9 | 58 | 18.5% |
| 12-14.9 | 98 | 31.3% |
| 15-19.9 | 53 | 16.9% |
| 20+ (throttle-realistic) | 16 | 5.1% |
Why advertised range is usually higher than real range
Advertised range is produced under conditions the seller chooses. Our data shows how favorable those conditions have to be. 28.1% of listings imply consumption under 10 watt-hours per mile. That level is achievable, but only with a light rider using low pedal assist on flat ground. It does not describe throttle riding, hills, or a loaded commuter.
Implied consumption across 313 listings: median 12.0 Wh per mile, range 5.5 to 36.0. 88 listings (28.1%) imply under 10 Wh per mile, which assumes best-case pedal-assist conditions.
Derived from seller-published battery and range figures. Not independent road testing.
What changes your range the most
| Factor | Effect on consumption | Practical note |
|---|---|---|
| Throttle vs pedal assist | Largest | Throttle-only riding can raise consumption by half again or more compared with low assist. |
| Hills | Large | Climbing converts battery energy directly into height. |
| Cold weather | Large | Cold cells deliver less usable capacity. The loss is temporary. |
| Speed | Large above 20 mph | Air resistance rises steeply with speed. |
| Rider and cargo weight | Moderate | Affects acceleration and climbing most. |
| Tire pressure | Moderate | The cheapest range gain available. Check before rides. |
| Battery age | Gradual | Capacity fades over charge cycles. |
How to measure your own range in one week
- Charge to full and note the starting battery level.
- Ride your normal route in your normal assist mode. Do not ride gently to flatter the result.
- Record miles ridden and the percentage of battery used.
- Divide: miles ridden divided by the fraction of battery used gives projected full-charge range. Twelve miles on 40 percent projects to about 30 miles.
- Repeat once warm, once cold, and once loaded. Plan around the lowest result.
Range by battery size: quick reference
If you want the answer without touching the calculator, this table runs the same math at three riding styles. Eco means low assist with real pedaling. Mixed means moderate assist on rolling terrain. Hard means heavy throttle, hills, or cold weather.
| Battery capacity | Eco riding | Mixed riding | Hard riding |
|---|---|---|---|
| 360 Wh | 42 mi | 27 mi | 12 mi |
| 500 Wh | 59 mi | 38 mi | 17 mi |
| 720 Wh | 85 mi | 54 mi | 25 mi |
| 960 Wh | 113 mi | 72 mi | 33 mi |
| 1200 Wh | 141 mi | 90 mi | 42 mi |
| 1800 Wh | 212 mi | 135 mi | 62 mi |
How far can an e-bike go on one charge?
For a typical e-bike with a 720 watt-hour battery, expect roughly 54 miles in mixed riding, about 85 miles ridden gently, and around 25 miles using heavy throttle on hills in cold weather. Marketing figures usually describe the first of those three numbers, and buyers usually ride closer to the second or third.
Three worked examples show how much the rider matters more than the badge on the frame.
| Rider | Setup | Estimated range |
|---|---|---|
|
City commuter 165 lb, flat route, moderate assist |
500 Wh battery, 15 to 20 mph, mild weather | 44 miles |
|
Hill commuter 210 lb with a backpack, hilly route |
720 Wh battery, moderate assist, cool weather | 30 miles |
|
Throttle rider 240 lb, mostly throttle, winter |
960 Wh battery, over 20 mph, cold | 21 miles |
What size battery do you need for your commute?
Size the pack so your round trip uses roughly half the usable capacity in your worst normal conditions. That reserve absorbs cold days, headwinds, a heavier load, and the gradual capacity loss every battery shows after a few years.
| Round trip | Minimum battery | Comfortable battery | Why |
|---|---|---|---|
| Under 10 miles | 360 Wh | 500 Wh | Almost any current e-bike covers this. Prioritize weight and storage. |
| 10 to 20 miles | 500 Wh | 720 Wh | The most common commute. A mid-size pack removes range anxiety. |
| 20 to 35 miles | 720 Wh | 960 Wh | Size up, or charge at one end of the trip. |
| 35 to 50 miles | 960 Wh | 1,200 Wh | Consider a removable pack you can carry inside during the day. |
| Over 50 miles | 1,200 Wh | 1,800 Wh or a second pack | A larger pack also adds weight to every other ride. |
How to read battery specs: volts, amp-hours, and watt-hours
Most listings advertise volts and amp-hours rather than watt-hours, which is the figure that actually predicts range. Convert it yourself with one multiplication: volts × amp-hours = watt-hours. A 48V 15Ah battery is 720 Wh. A 36V 10Ah battery is 360 Wh, which is half the energy despite sounding similar.
| Advertised spec | Watt-hours | Mixed-riding estimate |
|---|---|---|
| 36V 10Ah | 360 Wh | 27 mi |
| 36V 14Ah | 504 Wh | 38 mi |
| 48V 15Ah | 720 Wh | 54 mi |
| 48V 20Ah | 960 Wh | 72 mi |
| 52V 20Ah | 1,040 Wh | 78 mi |
| 60V 30Ah | 1,800 Wh | 135 mi |
Frequently asked questions
How accurate is an e-bike range calculator?
It gives a planning estimate, not a measurement. This calculator starts from a median of 12.0 watt-hours per mile measured across 313 listings and adjusts for your conditions. Motor efficiency, wind, tires, traffic, and battery age still move the real number, so measure your own bike and trust that figure more.
How do you calculate e-bike range?
Divide usable battery energy by energy used per mile. Take about 90 percent of the stated battery watt-hours as usable, then divide by your consumption. At 12.0 watt-hours per mile, a 720 watt-hour battery gives roughly 54 miles under moderate conditions.
How many watt-hours per mile does an e-bike use?
Most e-bikes use between 10 and 20 watt-hours per mile in normal riding. Our marketplace data puts the median implied consumption at 12.0 watt-hours per mile, with the middle half between 9.9 and 14.4. Throttle riding, hills, and cold weather push it higher.
Why is my e-bike range lower than advertised?
Advertised figures assume favorable conditions. In our data, 28.1 percent of listings imply consumption under 10 watt-hours per mile, which requires a light rider on low assist over flat ground. Throttle use, hills, cold, speed, and cargo all reduce real distance.
How much range do I lose in winter?
Cold reduces the usable capacity a lithium pack can deliver, so winter range is meaningfully shorter than summer range on the same bike. The loss is temporary and capacity returns as the pack warms. Store the battery indoors and fit it shortly before riding.
Does a bigger motor reduce range?
Not directly. Motor wattage sets available power, not consumption. What reduces range is how much of that power you use. A high-wattage bike ridden gently at low assist can outlast a smaller motor ridden at full throttle.
How far can an e-bike go on one charge?
A typical 720 watt-hour e-bike covers roughly 54 miles in mixed riding. Ridden gently it can exceed that, and with heavy throttle on hills in cold weather it can drop to less than half. Advertised figures usually describe the gentlest of those cases.
How do I convert volts and amp-hours to watt-hours?
Multiply them. Volts times amp-hours equals watt-hours. A 48V 15Ah battery is 720 watt-hours. Watt-hours is the figure that predicts range, so compare that rather than voltage, which only affects power delivery.
What size e-bike battery do I need for commuting?
Size the pack so your round trip uses about half the usable capacity in your worst normal conditions. For a 10 to 20 mile round trip, 500 to 720 watt-hours is comfortable. For 20 to 35 miles, look at 720 to 960 watt-hours.
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- 750W vs 1000W E-Bike: How Much Motor Power You Need
- Electric Bike Laws by State (2026)
- StreetRides US Research Methodology
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