Height, inseam, saddle height
Kids Bike Size Chart by Height
Use this kids bike size chart by height when age alone is too rough. A child bike size chart by height gives the wheel-size shortlist, then inseam, lowest saddle height, brake reach, and confidence decide whether the bike is safe to control.
Data reviewed: 2026-05-18
Model geometry is a reference check; sizing comes from the available size chart rows.
Enter your measurements to see your recommended size, backup size, confidence, and why it fits.
Kids bike size calculator
Calculate wheel size from height, age, inseam, and confidence.
Kids bike size chart by age
Compare age-based ranges when height is not the only input.
Kids bike size chart
Use broader kids sizing notes before buying.
Bike wheel size chart
Compare kids, BMX, folding, mountain, road, and hybrid wheel labels.
Youth bike size chart
Compare 24 inch, 26 inch, and youth-adult transition sizes.
Sizing notes
Read the chart, then check the bike.
Height gives the wheel-size shortlist
For kids bikes, height usually points to a likely wheel size before frame geometry matters. Use it to narrow the choice, then check the real bike's saddle range.
Inseam confirms starts and stops
A child needs enough inseam to start, stop, and put a foot down confidently. If standover or lowest saddle height is close, compare the smaller wheel size.
Brake reach and confidence matter
The right wheel size can still be wrong if the child cannot reach the brakes or steer the bike comfortably. Choose control over extra growth room.
Age is a secondary check
Age helps when height ranges overlap, but growth rates vary. Use the age chart only after height and inseam create the shortlist.
Child bike size chart by height
Size
12 inch wheel
Height
90-105 cm / 2'11"-3'5"
Inseam: 35-42 cm inseam
Size
14 inch wheel
Height
95-110 cm / 3'1"-3'7"
Inseam: 38-46 cm inseam
Size
16 inch wheel
Height
100-115 cm / 3'3"-3'9"
Inseam: 42-52 cm inseam
Size
20 inch wheel
Height
115-135 cm / 3'9"-4'5"
Inseam: 50-60 cm inseam
Size
24 inch wheel
Height
130-150 cm / 4'3"-4'11"
Inseam: 58-68 cm inseam
Size
26 inch wheel
Height
145-160 cm / 4'9"-5'3"
Inseam: 66-74 cm inseam
FAQ
Short answers for choosing a size before purchase.
How do I use a kids bike size chart by height?
Match the child's height to a wheel-size range first, then confirm inseam, lowest saddle height, brake reach, and confidence before buying.
What size kids bike by height does my child need?
Most children move from 12 to 16 inch wheels under about 115 cm, 20 inch around 115-135 cm, 24 inch around 130-150 cm, and 26 inch near youth-adult overlap.
Is a child bike size chart by height better than age?
Height is usually more accurate than age, but inseam and bike control still decide the final size.
Should I size up for growth room?
Only if the child can still start, stop, steer, and brake safely. A too-large bike slows learning and reduces control.