Bike Buying Guide Size Instant

If you are between sizes, or comparing different brands, look at "Reach" and "Stack" on the bike's geometry chart.

If you are on the cusp, sizing down is usually safer as it offers better control and maneuverability. Sizing up is better if you prefer a more stable, less "twitchy" feel. bike buying guide size

The horizontal distance from the pedals (bottom bracket) to the handlebars. A longer reach feels more "stretched out" and aggressive. If you are between sizes, or comparing different

Kids' bikes are sized by rather than frame height. 12-inch: Ages 2–4 (approx. 2'10" – 3'4") 16-inch: Ages 4–6 (approx. 3'7" – 4'0") 20-inch: Ages 6–9 (approx. 4'0" – 4'5") 24-inch: Ages 8–11 (approx. 4'5" – 4'9") Pro-Tips for Buying The horizontal distance from the pedals (bottom bracket)

Your height gives you a direction, but your inseam gives you precision. This is not your pant size; it is the distance from your crotch to the floor.

Road bikes are typically sized in centimeters (cm). 4'11" – 5'2": 47 – 50 cm 5'3" – 5'6": 51 – 54 cm 5'7" – 5'9": 54 – 56 cm 5'10" – 6'0": 56 – 58 cm 6'1" – 6'3": 58 – 61 cm

Stand barefoot against a wall with feet 6–8 inches apart. Place a hardcover book between your legs and pull it snugly against your crotch (mimicking a saddle). Measure from the floor to the top of the book's spine.