Bike size guide

Match a rider’s height to a starting frame size for road, mountain, gravel, and hybrid bikes.

Sizes vary by brand, model, and how the maker measures the frame. Use this as a starting point, then check that brand’s chart. Stand over the bike, or ask a partner shop, before you buy. This is not a fit guarantee.

Your height

Enter a height in feet and inches, or in centimeters.

Road

Often listed in centimeters.

Rider heightFrame size
4'10"–5'1" · 147–155 cm47–49 cm
5'1"–5'4" · 155–163 cm50–52 cm
5'4"–5'7" · 163–170 cm52–54 cm
5'7"–5'10" · 170–178 cm54–56 cm
5'10"–6'1" · 178–185 cm56–58 cm
6'1"–6'4" · 185–193 cm58–60 cm
6'4" and taller · 193 cm and up61–63 cm

Mountain

Often listed as a letter or in inches.

Rider heightFrame size
4'10"–5'2" · 147–157 cmXS · 13–14 in
5'2"–5'5" · 157–165 cmS · 15–16 in
5'5"–5'9" · 165–175 cmM · 17–18 in
5'9"–6'1" · 175–185 cmL · 19–20 in
6'1"–6'4" · 185–193 cmXL · 21–22 in
6'4" and taller · 193 cm and upXXL · 23 in and up

Gravel

Often close to a road size, and still brand-specific.

Rider heightFrame size
4'10"–5'2" · 147–157 cm49–50 cm
5'2"–5'5" · 157–165 cm51–52 cm
5'5"–5'8" · 165–173 cm53–54 cm
5'8"–5'11" · 173–180 cm55–56 cm
5'11"–6'2" · 180–188 cm57–58 cm
6'2" and taller · 188 cm and up59–61 cm

Hybrid

Often listed as a letter size.

Rider heightFrame size
4'10"–5'1" · 147–155 cmXS
5'1"–5'5" · 155–165 cmS
5'5"–5'9" · 165–175 cmM
5'9"–6'1" · 175–185 cmL
6'1"–6'4" · 185–193 cmXL
6'4" and taller · 193 cm and upXXL

Browse bikes