Bike Size Guide
General industry size ranges by rider height (and inseam where it matters). They're a starting point, not one of our fit formulas. Sizing varies by brand and geometry, so confirm on the actual bike whenever you can.
Road
| Frame size | Height | Inseam |
|---|---|---|
| 47 cm | 152–158 cm | 71–75 cm |
| 50 cm | 158–163 cm | 74–77 cm |
| 52 cm | 163–168 cm | 76–79 cm |
| 54 cm | 168–174 cm | 78–82 cm |
| 56 cm | 174–180 cm | 81–85 cm |
| 58 cm | 180–185 cm | 84–87 cm |
| 60 cm | 185–190 cm | 86–90 cm |
| 62 cm | 190–195 cm | 89–92 cm |
Gravel
| Frame size | Height | Inseam |
|---|---|---|
| 47 cm | 152–158 cm | 71–75 cm |
| 50 cm | 158–163 cm | 74–77 cm |
| 52 cm | 163–168 cm | 76–79 cm |
| 54 cm | 168–174 cm | 78–82 cm |
| 56 cm | 174–180 cm | 81–85 cm |
| 58 cm | 180–185 cm | 84–87 cm |
| 60 cm | 185–190 cm | 86–90 cm |
| 62 cm | 190–195 cm | 89–92 cm |
Gravel bikes typically follow road-bike frame sizing.
Mountain (MTB)
| Frame size | Height | Inseam | Suggested wheel |
|---|---|---|---|
| XS (13.5") | 137–155 cm | 64–73 cm | 26" or 27.5" |
| S (15.5") | 153–166.5 cm | 72–79 cm | 27.5" or 29" |
| M (17.5") | 161–172 cm | 76–81 cm | 27.5" or 29" |
| M/L (18.5") | 165.5–179 cm | 77–84 cm | 29" or 27.5" |
| L (19.5") | 177–188 cm | 83–88 cm | 29" or 27.5" |
| XL (21.5") | 186–196 cm | 87–92 cm | 29" or 27.5" |
| XXL (23.0") | 195–203 cm | 92–95 cm | 29" or 27.5" |
Hybrid / City
| Size | Height | Inseam |
|---|---|---|
| S | 155–165 cm | 72–78 cm |
| M | 165–175 cm | 77–83 cm |
| L | 175–186 cm | 82–88 cm |
| XL | 186–197 cm | 87–93 cm |
| XXL | 197–203 cm | 92–95 cm |
Kids
| Wheel size | Height | Typical age |
|---|---|---|
| 12" | 86–102 cm | 2–4 |
| 16" | 99–117 cm | 4–6 |
| 20" | 114–132 cm | 6–8 |
| 24" | 130–150 cm | 8–12 |
| 26" | 146–160 cm | 12+ |
Source: thebikeshoppe.com bike size guide. A general guideline, not one of our fit formulas.
How to use the size chart
Choose your bike type (road, gravel, MTB, hybrid or kids), find your height in the chart and check that your inseam falls in the same row. The ranges are general industry figures, not a specific brand’s chart. Brands label and design their frames differently, so two “56 cm” frames can fit quite differently.
Use the chart to narrow down a likely size, then compare stack and reach in the geometry charts of the bikes you’re considering. These two numbers describe where the handlebars will be, regardless of the size label. The bike fit calculator estimates a frame reach range for road and gravel bikes.
Related guides: Road bike size chart · How to measure your inseam · MTB and gravel bike size chart
Frequently asked questions
Height or inseam: which matters more?
Use both. Two riders of the same height can have quite different leg lengths. If your height and inseam point to different sizes, compare stack and reach of both candidates rather than relying on one number.
I’m between two sizes. Which should I choose?
It depends on the geometry of the specific bikes and on your own fit, so compare stack and reach for both sizes. A smaller size usually puts the handlebars lower and closer, a larger one higher and further away. Stem length and spacers can fine-tune either within limits. If you can, test-ride both or ask a bike fitter.
Why do different brands size their bikes differently?
Some brands use centimeters, others S/M/L, and the same label can mean different geometry. Stack and reach are the brand-independent way to compare frames.
Is there a size chart for TT/triathlon or touring bikes?
Not yet. We don’t have a reliable chart for them, so no size is shown. Compare stack and reach, and use the bike fit calculator for a starting position.