If I am between two sizes, which one should I choose?

It depends on riding style and comfort: a smaller size usually feels more agile, while a larger size gives a more stretched position. A real test ride is still recommended.

Does the size apply to every brand?

No. Geometry changes between brands and models. Use the result as a starting point and compare it with the official frame size chart.

Is height or inseam better?

Inseam is often more useful for estimating frame size, while height helps define the general size. Using both is more reliable.

Calculate your size

How to use the calculator

Enter your height and, when possible, your inseam. If the inseam is empty, the calculator uses an estimate, useful but less precise.

Why inseam matters

Two riders with the same height can have very different leg lengths. Frame size depends on that too, because bicycles apparently needed extra drama.

Road, MTB and trekking differ

Each bike type uses different geometry, so the calculator applies different factors and shows a dedicated chart.

Indicative result

Use the result as a practical starting point. Always check the manufacturer chart before buying.

Size

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Frame

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Height

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Inseam

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Factor

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Reference chart

Size	Height (cm)	Inseam (cm)	Frame (cm)
XS	140–152	68–73	46–49
S	153–162	73–77	49–52
M	163–170	77–82	52–55
M/L	171–178	82–86	55–58
L	179–186	86–90	58–61
XL	187–195	90–93	61–63
XXL	196+	93+	63+

Size	Height (cm)	Inseam (cm)	Frame (cm)	Frame (")
XS	140–154	66–72	33–37	13–14.5"
S	155–164	72–76	37–41	14.5–16"
M	165–174	76–81	41–44	16–17.5"
L	175–184	81–86	44–48	17.5–19"
XL	185–194	86–91	48–52	19–20.5"
XXL	195+	91+	52+	20.5"+

Size	Height (cm)	Inseam (cm)	Frame (cm)
XS	140–152	68–72	42–45
S	153–162	72–76	46–49
M	163–172	76–81	50–53
L	173–182	81–86	54–57
XL	183–192	86–90	58–61
XXL	193+	90+	62+

Frequently asked questions

Height or inseam?

Inseam is better for frame estimation. Height gives the general size range.

What if I am between two sizes?

Smaller usually feels more agile, larger usually feels more stretched. A real test ride still wins.

Does this work for every brand?

No. Geometry changes by brand and model. Compare the result with the official size chart.