Bike size chart
Starting sizes by type of bike and by height, restated from published charts.
Short answer: a bike size chart maps your height (and sometimes inseam) to a starting frame or wheel size. There is no single chart that fits every brand. Road bikes are often listed with an effective top tube or a frame size in cm,[1 · Oct 29, 2026] mountain bikes usually use XS to XXL,[2 · Oct 29, 2026] and hybrids, city and many e-bikes use a letter size or a frame size in cm from that brand's own chart.[3 · Oct 29, 2026] Use the tables to get close, then check the chart for the exact model and take a test ride.
Bike size charts by type
| Bike type | How it's usually sized |
|---|---|
| Road size chart | Usually a letter size plus an effective top tube or frame size in cm. |
| Mountain size chart | Usually XS to XXL; some trail bikes use S1 to S6. |
| Hybrid and city size chart | Letter size or a frame size in cm, mainly by height. Trekking bikes generally use the same kind of chart. |
| E-bike size chart | Often follows the same height ranges as that brand's hybrid or mountain chart. |
| Kids and children's size chart | Wheel size by the child's height and inseam, not age alone. |
| BMX size chart | Top tube and wheel size by rider height. |
| Beach cruiser size chart | Usually a wheel size (24 or 26 in) by rider height. |
| Helmet size chart | Head circumference, not rider height. |
 size chart | 's published charts for the models we have sourced, not a single -wide fit. |
All size chart pages
This hub links every size chart on the site:
- Road bike size chart
- Mountain bike size chart
- Hybrid, city and trekking bike size chart
- E-bike size chart
- Kids and children's bike size chart
- BMX bike size chart
- Beach cruiser size chart
- Trek bike size chart
- Bike size by height
- What size bike do I need?
- Bike helmet size by head size
- How to measure inseam
Bike size by height
These starting sizes are restated from the same published road, mountain and hybrid charts we use on what size bike do I need. Brands overlap their ranges, so two bikes with the same label can fit differently.[1 · Oct 29, 2026]
| Rider height | Road (effective top tube)[1 · Oct 29, 2026] | Mountain[2 · Oct 29, 2026] | Hybrid or e-bike (one brand's chart)[3 · Oct 29, 2026] |
|---|---|---|---|
| 4'10" (147 cm) | XXS (47–48 cm) | XS | outside chart |
| 5'0" (152 cm) | XXS (47–48 cm) or XS (49–50 cm) | XS | outside chart |
| 5'2" (157 cm) | XS (49–50 cm) | S | S |
| 5'4" (163 cm) | S (51–53 cm) | S | S |
| 5'6" (168 cm) | S (51–53 cm) or M (54–55 cm) | M | M |
| 5'8" (173 cm) | M (54–55 cm) | M | M |
| 5'10" (178 cm) | L (56–58 cm) | M | L |
| 6'0" (183 cm) | L (56–58 cm) or XL (58–60 cm) | L | L |
| 6'2" (188 cm) | XL (58–60 cm) | XL | XL |
| 6'4" (193 cm) | XXL (61–63 cm) | XL or XXL | XL |
| 6'6" (198 cm) | XXL (61–63 cm) | XXL | outside chart |
We also have height pages for 5'7", 5'9", 5'11", which fall between the rows above. Those pages use the same published charts and explain the overlap.
The full height index is at bike size by height. To measure inseam before you compare charts, see how to measure inseam.
How to use a bike size chart
- Start with your height on the chart for that type of bike, then confirm with inseam if the maker lists it.
- Check the exact model. A medium in one brand can be another brand's small.[1 · Oct 29, 2026]
- If you're between sizes, reach and standover usually decide, and a test ride is worth it.[2 · Oct 29, 2026]
Bike size frame chart
A bike size frame chart is a size chart that maps your height (and sometimes inseam) to a starting frame size — a letter such as M, or a measurement such as 54 cm. It is the same idea as a bike size chart, not a separate kind of page. Road bikes often list frame size in centimeters or an effective top tube; mountain bikes usually use XS to XXL; hybrids, city and many e-bikes use a letter or a centimeter size from that brand's own chart. Kids' and children's bikes are the exception: they are sized by wheel diameter, not frame size.
There is no single frame chart for every brand. Use the type links and the height table on this page to get a starting size, then check the chart for the exact model.
Bike size chart FAQs
Is there one bike size chart for every bike?
No. Charts vary by brand and by type of bike. The tables here are starting ranges restated from published guides, not a universal fit.
What's the difference between a size chart and a frame size?
See the bike size frame chart section above. A size chart assigns a label or measurement (for example M, or 54 cm) to your height; frame size is that label on a specific bike. A "bike size frame chart" is the same idea, and it still has to come from the model's own chart.
Sources: 1. BikeRadar, Road bike sizing. 2. Ridley's Cycle, Mountain bike size chart and fit guide. 3. Polygon Bikes, Sizing guide (height charts by bike type). Checked Oct 29, 2026. Trademarks belong to their owners; charts are restated in our own tables, not reproduced.