Claire WhitakerBy Claire Whitaker

Updated November 2026

A cube road bike size chart matches your height and inseam to a frame size, so you can narrow your options before you ever sit on a saddle. This guide shows you how to take two simple measurements, read the chart correctly, and confirm the fit with a few checks. By the end, you will know which frame size to try first and what to look for when you test ride.

Start With Your Height and Inseam

Most brands, including Cube, base their sizing on a combination of rider height and inseam. Height gives a rough starting point, but inseam tells you more about how the frame will fit your legs and reach. Take both measurements before you open any chart.

Shopping for one? See our guide: 5 Best Road Bike Shoe Size Charts (2026): Expert Picks.

  1. Stand barefoot against a wall with your heels about 2 inches apart and mark the top of your head. Measure from the floor to the mark in centimeters or inches.
  2. Place a hardcover book between your legs, spine up, and pull it snugly against your crotch as if you were sitting on a saddle.
  3. Have someone measure from the top of the book to the floor. Measure at least twice and use the longer, more accurate number.

Read the Cube Size Chart

Cube publishes its own geometry and sizing tables for each model, usually listed as XS, S, M, L, XL or as numbered frame sizes in centimeters. Find the row that matches your height, then check whether your inseam falls within the range listed for that same size. If the two measurements point to different sizes, the inseam usually matters more for comfort on a road bike because it affects standover clearance and saddle height.

Rider measurement What to check on the chart
Height Gives a starting frame size range
Inseam Confirms standover clearance and seat tube fit
Arm reach (optional) Helps decide between two neighboring sizes

Keep in mind that Cube sizing can differ slightly between model lines, so always use the chart for the exact bike you want rather than a general size guide.

Confirm the Fit on the Bike

A chart gets you close, but a few on-bike checks confirm the choice. Ideally, you test ride before buying, or at least stand over the frame at a shop.

  • Standover: With both feet flat, you should have roughly 1 to 2 inches between yourself and the top tube.
  • Reach: In the riding position, your hands should rest on the hoods with a slight bend in your elbows, not stretched out or cramped.
  • Saddle height: With your heel on the pedal at the bottom of the stroke, your leg should be nearly straight. A slight bend at the knee on the pedal ball is typical for road riding.

If you are between sizes, a shorter stem or a different saddle setback can often fine-tune reach, but a frame that is far too large or small cannot be fixed with components alone.

Plan for Adjustments and Future Changes

Once you have a frame size, expect to adjust the saddle height, saddle fore-aft position and handlebar height during your first few weeks. Small changes often make a big difference in comfort. If you have a specific injury, back issue or fit concern, a professional bike fitter or physical therapist can help you dial in the setup safely.

Common Mistakes

  • Choosing a size based only on height and ignoring inseam.
  • Comparing sizes across different brands instead of using Cube’s own chart.
  • Assuming a bigger frame will feel more stable for a beginner. A frame that is too large often feels harder to control.
  • Skipping the standover check, which matters most when you stop at traffic lights.
  • Buying online without knowing the return policy for the bike or the fit.

A cloth tape measure makes the height and inseam steps more accurate than a metal ruler. View on Amazon

A bike fit checklist or a simple bike stand lets you inspect the saddle and bar height at home before a ride. View on Amazon

FAQ

Should I size my Cube road bike by height or inseam?

Use both, but give extra weight to inseam when the two point to different sizes. Inseam affects standover clearance and saddle height, which matter a lot for comfort on a road bike.

What if I am between two Cube sizes?

Try both if you can. Choose the smaller size if you prefer a more aggressive position, or the larger size if you want a more relaxed, upright feel, then adjust the stem and saddle.

Can I rely only on a size chart when buying online?

A chart is a good starting point, but check the return policy and, if possible, test ride a bike of similar geometry first. Getting an in-person fit at a bike shop is the safest option.

Conclusion

Measure your height and inseam, match them to the correct row on the cube road bike size chart, and confirm the choice with standover, reach and saddle height checks. A well-chosen frame size makes every early ride more comfortable and easier to learn on. For a deeper look at how frame geometry shapes the ride, see Road Bike Size Chart Inseam: How to Find Your Frame Size in 5 Steps.

Ready to choose one?

Claire Whitaker

About Claire Whitaker

Claire Whitaker is part of our editorial team and reviews and edits our cycling for beginners guides, checking product details against manufacturer specifications and owner feedback.