Use the sizing chart below to figure out how kids' bikes are measured and defined, and to know best what you're looking for when shopping for a particular bike. An important thing to know is that kids' bikes are measured in wheel size (diameter). This is in contrast to adult bikes, whose measurements refer to frame size.
|Guide to Kid's Bike Sizes|
|Age||Child's Height||Bike Wheel Size|
|Age 2 - 5||26 - 34 inches||12 inches|
|Age 4 - 8||34 - 42 inches||16 inches|
|Age 6 - 9||42 - 48 inches||18 inches|
|Age 8 - 12||48 - 56 inches||20 inches|
|Youth||56 - 62 inches||24 inches|