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Guide

Is your bike the right size?.

A bike that fits is comfortable, safe, and easy to ride; one that doesn't will put you off riding. Here's how to check the fit basics yourself.

Last updated · 2026-06 See something off? Tell us →

A bike that fits disappears under you; one that doesn’t nags at your knees, back, and wrists until you stop reaching for it. You don’t need a professional fitting to get the basics right — a few checks catch the things that actually matter for everyday riding.

The self-check, frame to fine-tuning

Six checks, roughly in order. Get these right and most everyday aches sort themselves out:

  1. Standover clearanceStraddle the frame flat-footed; you want a gap between you and the top tube.
  2. Reach to the barsSeated, your arm is relaxed and slightly bent, neither stretched out nor bunched up.
  3. Saddle heightAt the bottom of the stroke the knee keeps a slight bend, not locked straight, not sharply bent.
  4. Bar heightLevel with the saddle or a touch higher is kinder to the back and neck.
  5. Brake reachGrab both levers without stretching; many have a small screw to bring them closer for smaller hands.
  6. Foot-down at stopsSlide forward off the saddle and put a foot down confidently; you needn't touch the ground while seated.

Standover and reach tell you the frame is roughly right, and if either is badly off no adjustment fully fixes it. Of the rest, saddle height does the most work: too low is the common mistake and it’s hard on the knees, so raise it a little at a time until pedalling feels smooth and your hips don’t rock.

When to get a hand

If something still hurts after these basics (a persistent sore knee, numb hands, an achy back), a shop fitting is money well spent, and small tweaks (saddle fore/aft, a shorter stem) often fix it. Comfort is what keeps you riding, so it’s worth chasing down.

This guide covers durable fit fundamentals, not a professional bike fit; get the frame size, saddle height, and reach roughly right and most everyday aches sort themselves out.

The fit self-check

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