There are three places where you can be measured up correctly. At a specialist bike retailer or custom frame builder with their own jig or an indoor trainer, at a specialist retail outlet which offers a fitting using a computerised measuring and analysis system, or by a specialist fitting expert who will examine every aspect of your cycling set up including flexibility, power output optimization, aerodynamic potential, foot position discrepancies – the works. There are also some systems online that can help you measure yourself at home but it isn’t as accurate as having an expert cast an eye over you.