This complete bike frame size guide will show you how to figure out the correct bike frame size for adults and kids. This post includes all you need to know about bike frame measurement, and includes handy bike frame size charts for adult bikes and kid’s bikes. The adult charts include sizes for hybrid bikes, mountain bikes, and road bikes. This guide also includes advice on whether to choose a women-specific bike. And it also shows you how to figure out whether you have a good Ape Index! The guide wraps it all up with a definitive video that will show you exactly how to measure for correct bike frame size.