Bike Sizing Articles: Sizes by Height, Age, and Wheel

Balance bike sizing

Balance Bike Size: Set the Saddle to the Inseam

Set a balance bike saddle at or below your child's inseam, measure the inseam at home, and compare the balance rows with the twelve-inch bikes that follow.

Women's bike sizing

Bike Size for Women: Frame Shape, Not a Second Scale

A women's bike uses the same height and inseam ladder as any other bike. Compare the published women's rows, the standover a step-through frame removes, and reach.

Standover check

Standover Height: Check Clearance Before You Buy

Read standover from a published geometry table, leave 20 to 100 mm above your inseam, and compare the 32 model records that publish a standover figure.

Kids bike sizing

Kids Bike Sizing Guide: Wheel Size for Ages 9 to 12

Pick a kids bike by height and inseam, not by age. Compare the 20, 24, and 26 inch rows that cover ages 9 to 12, the median height at each age, and when an adult frame fits.

Wheel size chart

Bike Wheel Size Chart: 12 to 29 Inch and 700C

Read a bike wheel size chart by diameter: 12 to 26 inch for kids, 27.5, 29 inch and 700C for adults, with the rider height each published wheel row covers.

Bike size guide

How to choose a bike size

Find your bike size step by step: measure your height and inseam, check the chart for your bike type, and learn what to do between sizes before you buy.

Frame measuring

How to Measure a Bike Frame

Measure a bike frame with a tape and a level: seat tube length, effective top tube, standover, reach, and stack, then check the numbers against the geometry chart.