E-Bike Range Calculator

How the math works

Most e-bikes consume 8–22 Wh per mile. We start at a baseline of 12 Wh/mi and adjust for:

• Rider + cargo weight above 150 lbs (~+0.5 Wh/mi per 20 lbs over baseline)
• Terrain (+3 Wh/mi for rolling, +7 for steep)
• Assist level (+1 Wh/mi per assist step above 3)
• Fat tires (+3 Wh/mi rolling resistance penalty)

Range estimate is reasonably conservative. Real numbers also depend on rider effort, wind, and how often you stop/start.