🔋 E-Bike Range Calculator
Understand how far your e-bike can travel on a single charge, and how conditions change energy consumption.
Higher assist consumes more energy per kilometre.
Include e-bike weight, rider, and gear.
Estimated Range
63.6 km
≈ 39.5 miles
Ride Time
2.89 h
2h 53m at 22 km/h
Consumption Rate
7.9 Wh/km
(12.7 Wh/mile)
How to Use This Calculator
Enter battery capacity
Find watt-hours printed on your e-bike battery casing.
Select average speed
Use your planned cruising speed for the route.
Choose assist & terrain
Select the power mode you will use most and the terrain profile.
Review range estimate
Plan charging stops or backup batteries accordingly.
Formula
Range = Battery Wh ÷ (Base Wh/km × Assist × Terrain × Weight Factor)
Base consumption starts around 5.5 Wh/km for a 75 kg rider on flat ground in Eco. We scale consumption by assist mode, terrain, and additional weight to mimic real-world energy demands.
Example
625 Wh battery, Sport mode (1.45×), rolling terrain (1.15×), 85 kg total → consumption ≈ 5.5 + 0.4×10 = 9.5 Wh/km; range ≈ 625 ÷ (9.5 × 1.45 × 1.15) ≈ 40 km.
Variables
- Battery Wh: Energy storage
- Assist multiplier: Power mode factor
- Terrain multiplier: Gradient influence
- Weight factor: Heavier load increases consumption
Maximize Your E-Bike Range
Range anxiety disappears when you understand how assist levels, tyre pressure, and cadence interact with battery drain. Small adjustments can extend rides significantly.
Efficiency Tips
- Stay in Eco/Tour on flats; use higher assist only on climbs.
- Keep tyres inflated and drivetrain clean to reduce rolling losses.
- Pedal at comfortable cadence; higher rider input preserves battery.
Trip Planning
- Plan charging stops every 30–60 km for touring with mid-size batteries.
- Carry a spare range extender battery for mountainous routes.
- Factor in temperature: cold weather reduces battery efficiency.
Frequently Asked Questions
How accurate is the estimate?
It provides a realistic baseline. Use ride data to refine your personal consumption rates.
Do regenerative brakes extend range?
Minimal on most e-bikes. Expect only small gains on long descending rides.
Why include rider weight?
Heavier systems require more energy to overcome gravity and rolling resistance, reducing range.
Can I switch between modes mid-ride?
Yes. Use a weighted average or estimate consumption per segment for more precise planning.
Should I fully discharge the battery?
No. Lithium-ion packs last longer when kept between 20–80%. Plan routes to avoid deep discharge.