Underground Bicyclesundergroundbicycles.co.uk

Size guide

Find your frame size

Enter your height and the kind of riding you do. We’ll suggest a frame size and show you the bikes that fit.

Size finder

Takes ten seconds. No tape measure needed.

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Size chart

A guide for adult bikes. Leg length and riding style matter too, so come and try a bike before you buy.

Your height
Size
Road frame
Town / hybrid
150–162 cm · 4′11″–5′4″
Small
48–51 cm
14–16″
162–172 cm · 5′4″–5′8″
Small/Medium
51–54 cm
16–17″
172–180 cm · 5′8″–5′11″
Medium
54–56 cm
17–19″
180–188 cm · 5′11″–6′2″
Medium/Large
56–58 cm
19–20″
188–196 cm · 6′2″–6′5″
Large
58–61 cm
20–22″

Quick checks when you try a bike

  • Standing over the frame, you should have a little room: about 2–5 cm on a road bike, a bit more on a town bike.
  • With the saddle set right, your leg is almost straight at the bottom of the pedal stroke.
  • You can reach the bars comfortably without locking your arms.
  • Vintage frames are often measured differently. Thierry will check the fit with you and set the bike up.