Which Bike Size
General recommendations for choosing the correct frame size
| rider height (cm) | frame size |
| up to 165 cm | 15, 16, S, up to 44 cm |
| 160 cm - 170 cm | 17, 18, M, up to 48 cm |
| 170 cm - 185 cm | 19, 20, L, up to 52 cm |
| 185 cm - 200 cm | 21, 22, XL, up to 55 cm |
| over 195 cm | 23, 24, 58-61 cm |
Manufacturer recommendations – AUTHOR
Author road bikes
| rider height (cm) | frame size |
| 150 cm - 160 cm | 48 cm |
| 160 cm - 169 cm | 50 cm |
| 169 cm - 178 cm | 52 cm |
| 178 cm - 185 cm | 54 cm |
| 185 cm - 193 cm | 56 cm |
| 193 cm - 200 cm | 58 cm |
Author MTB Master, Magnum
| rider height (cm) | frame size |
| 150 cm - 165 cm | 16 |
| 165 cm - 173 cm | 17.5 |
| 173 cm - 183 cm | 19 |
| 183 cm - 200 cm | 20.5 |
Author MTB Era, A-Ray, 29er
| rider height (cm) | frame size |
| 168 cm - 180 cm | 17 (M) |
| 180 cm - 190 cm | 19 (L) |
| 190 cm - 202 cm | 21 (XL) |
Author MTB Kinetic, Egoist
| rider height (cm) | frame size |
| 145 cm - 160 cm | 16.5 |
| 160 cm - 170 cm | 17.5 |
| 170 cm - 180 cm | 19 |
| 180 cm - 190 cm | 20 |
| 190 cm - 200 cm | 21 |
Author MTB ASL
| rider height (cm) | frame size |
| 140 cm - 155 cm | 16 |
| 155 cm - 165 cm | 18 |
| 165 cm - 180 cm | 20 |
Author MTB Outset, Dexter
| rider height (cm) | frame size |
| 150 cm - 150 cm | 15 |
| 150 cm - 165 cm | 17 |
| 165 cm - 180 cm | 19 |
| 180 cm - 190 cm | 21 |
| 190 cm - 205 cm | 23 |
Author MTB Unica, Quanta
| rider height (cm) | frame size |
| 145 cm - 165 cm | 16 |
| 165 cm - 180 cm | 18 |
Author trekking bikes (carbon)
| rider height (cm) | frame size |
| 145 cm - 155 cm | 16 |
| 155 cm - 165 cm | 18 |
| 165 cm - 180 cm | 20 |
| 180 cm - 190 cm | 22 |
Author trekking bikes (alloy)
| rider height (cm) | frame size |
| 150 cm - 160 cm | 16 |
| 160 cm - 170 cm | 18 |
| 170 cm - 180 cm | 20 |
| 180 cm - 190 cm | 22 |
| 190 cm - 205 cm | 24 |
Author women’s trekking bikes
| rider height (cm) | frame size |
| 145 cm - 165 cm | 17 |
| 165 cm - 180 cm | 19 |
Author men’s touring bikes
| rider height (cm) | frame size |
| 160 cm - 170 cm | 18 |
| 170 cm - 180 cm | 20 |
| 180 cm - 190 cm | 22 |
Author women’s touring bikes
| rider height (cm) | frame size |
| 145 cm - 165 cm | 17 |
| 165 cm - 180 cm | 19 |
Author kids’ bikes
| rider height (cm) | frame size |
| up to 100 cm | 12 |
| 100 cm - 115 cm | 16 |
| 115 cm - 130 cm | 20 |
| 125 cm - 160 cm | 24 |
Manufacturer recommendations – LEADER FOX
Determining frame size by rider height (children):
| Age | 2–4 years | 3–5 years | 4–6 years | 5–8 years | 7–11 years | 10 and older |
| Wheel size | 12" | 14" | 16" | 20" | 24" | 26" |
| Rider height | 82–100 cm | 98–106 cm | 104–122 cm | 120–130 cm | 127–142 cm | 140–158 cm |
| Inseam height | 30–40 cm | 36–44 cm | 40–54 cm | 52–59 cm | 57–66 cm | 64–70 cm |
Determining frame size by rider height (adults):
| Rider height | Frame size by designation |
| up to 165 cm | 16"-16.5" |
| 165–175 cm | 17.5"-18" |
| 175–185 cm | 19"-20.5" |
| 185–200 cm | 21.5"-22" |
| over 200 cm | 22.5" |
