e Bike Range Calculator - Battery Wh to Trip Miles

An e-bike range calculator estimates how many miles an electric bicycle can travel on a single battery charge from battery capacity and riding conditions. Plug in your battery's watt-hours, pick a scenario, and the calculator returns miles per charge for Efficient, Average, or Extreme riding so you can plan a commute with realistic expectations.

• • Commute planning: Estimate whether your daily commute fits on one charge before you leave the house in the morning.
• • Battery shopping: Size a replacement or upgrade battery by entering your target round-trip mileage and reading the required Wh.
• • Tour planning: Compare how hilly or headwind-heavy terrain will reduce range compared with a flat cruise.
• • Fleet operations: Rental operators use the calculator to predict turnaround charging needs across a fleet of mixed e-bikes.

Most consumer e-bike batteries fall between 250 Wh and 900 Wh, with 500 Wh being a common mid-size pack. The e-bike range calculator divides that energy by a Wh-per-mile number that reflects how hard the motor has to work in each scenario, so the same 500 Wh battery can give you about 35 miles in efficient cruising, 25 miles in average commuting, or closer to 19 miles in steep or windy conditions.

Reverse mode flips the question: instead of asking how far the bike will go, you tell it how far you want to ride and it tells you what size battery you need, which is the mode to use when you are comparing e-bikes or sizing an upgrade pack for longer trips.

If you want to pair the trip distance with the energy you personally spend, Calories Burned Biking Calculator converts the same ride duration and intensity into calories burned.

The e-bike range calculator multiplies or divides by a Wh-per-mile efficiency that matches your selected scenario. Forward mode divides battery watt-hours by efficiency to return miles; reverse mode multiplies a target mileage by the same efficiency to size a battery.

• battery_capacity_Wh: Total energy stored in the e-bike battery. Most packs are 250-900 Wh; multiply voltage (V) by amp-hours (Ah) to get Wh.
• scenario_Wh_per_mile: Average energy the motor and bike consume per mile: 14.17 for Efficient, 20.0 for Average, 26.15 for Extreme.
• target_miles: Desired one-way range in miles, used only in Reverse mode to size a battery.

Energy per mile captures almost everything that drains an e-bike battery: motor assist level, hills, headwind, rolling resistance, rider and cargo weight, and the bike's own mass. Higher Wh-per-mile means the same battery travels fewer miles, which is why an Extreme scenario pulls the range down sharply.

The Wh-per-mile constants used here come from the Omni Calculator 680 Wh and 650 Wh worked examples, which both round to 14.2, 20.0, and 26.2 Wh/mile for Efficient, Average, and Extreme riding on a typical 26- to 28-inch commuter e-bike.

According to Omni Calculator e-bike range, A 680 Wh e-bike battery returns about 48 miles in the Efficient scenario, 34 miles in Average, and about 26 miles in Extreme, and the same calculator supports a reverse mode that sizes a battery from a target range.

When hills start to dominate the Wh-per-mile number, Bicycle Gear Ratio Calculator helps you check whether a lower gear keeps your cadence comfortable without overworking the motor.

Four concepts explain how an e-bike range calculator turns a single battery capacity into a believable mileage estimate, and let you sanity-check any number it produces.

These four ideas let you read any e-bike range number in context. A 500 Wh battery promising 80 miles in marketing material is almost always quoted at the Efficient preset, so 25 to 35 miles is a more realistic expectation on a real commute.

Heavier riders and cargo push Wh per mile higher, and Cycling Power to Weight Ratio Calculator shows how the same rider produces more watts per kilogram on a lighter bike.

Pick a mode, choose a scenario, and enter the value that matches what you already know. The estimate updates as soon as you change any field.

1. 1 Choose a calculator mode: Pick Forward when you have a battery and want range; pick Reverse when you have a target mileage and want the required Wh.
2. 2 Pick a riding scenario: Use Efficient for flat ground with a tailwind, Average for everyday commuting, and Extreme for hills, headwinds, or heavy cargo.
3. 3 Enter battery capacity in Wh: Type the e-bike battery capacity in watt-hours. If you only see voltage and amp-hours on the label, multiply them to get Wh.
4. 4 Enter your target range in Reverse mode: If you chose Reverse, type the one-way miles you want to ride so the calculator returns the Wh you need.
5. 5 Read the estimate and the energy use: The primary number is the miles you can ride in Forward mode or the required Wh in Reverse mode. The Energy Use row shows the Wh-per-mile scenario constant.
6. 6 Reset to plan another trip: Use the reset button to restore the defaults and rerun the math for a different scenario, battery, or target range.

You are picking a new e-bike for a 25-mile round-trip commute that includes two short climbs. Open the calculator in Forward mode at Average, type 500 Wh. The result is about 25 miles, just enough for the round trip. Switch to Reverse mode at 30 miles, and the calculator returns about 600 Wh.

A single, transparent number beats a vague marketing claim. These benefits come from replacing guesswork with a Wh-per-mile number you can recompute for any trip.

• • Plan a realistic commute: Compare the round-trip distance to your expected Average range before you leave the house, and schedule a top-up only when you actually need one.
• • Compare e-bikes fairly: Convert marketing range claims into the same scenario so a 500 Wh commuter and a 750 Wh touring pack can be compared side by side.
• • Size a battery without guesswork: Reverse mode tells you the Wh needed for a target range, which removes the trial-and-error from choosing an upgrade pack.
• • Quantify terrain impact: Switching between Efficient, Average, and Extreme shows how many miles the same battery loses when hills, wind, or cargo enter the picture.
• • Budget charging cost: The total energy delivered row, in kWh, lets you estimate charging cost and decide whether a wall outlet at the office is enough to top up between rides.
• • Forecast fleet needs: Rental and tour operators use the same numbers to plan turnaround charging windows across a mixed fleet of e-bikes.

Pair the energy estimate with a calorie estimate when you want to put a number on a whole trip. The same 500 Wh battery that returns 25 Average miles will also burn calories at a different rate than the same trip on a regular bike, which is useful context for fitness-focused commuters.

Long e-bike rides still draw on your aerobic engine, so Cycling FTP Calculator gives a baseline FTP you can use to plan how much assist you actually need on the climbs.

Five factors move the Wh-per-mile number up or down, and each one is worth checking before you commit to a trip plan. A small change in conditions can swing the estimate by 30 percent or more.

• • The Wh-per-mile constants are averages; real rides vary by 10 to 20 percent because of micro-terrain, traffic stops, and battery age.
• • Battery capacity drops slightly in cold weather and after several hundred charge cycles, so an older pack delivers less than its label rating.
• • Reverse mode assumes the same Wh-per-mile for the whole trip; a long Extreme ride that includes an Easy downhill return uses less average Wh per mile than the all-Extreme estimate.

Treat the estimate as a planning number, not a hard promise. The Wh-per-mile constants reproduce Omni Calculator's headline examples, but every real e-bike has its own personality as the battery ages and as you ride in colder temperatures.

According to Wikipedia - Electric bicycle, Consumer e-bike batteries typically range from 250 Wh to 900 Wh, and the most common voltage classes are 24V, 36V, and 52V.

When headwinds and rolling terrain combine to lengthen a chase, Cycling Breakaway Calculator shows how drafting and group size change the energy each rider has to spend.