Find Your Kid's Bike Size

JOYSTAR Kids Bike Sizing Guide

Tip: Select bikes based on your child's height rather than age. If your child is between sizes, choose the larger size for longer use.

Child Height Age Reference Wheel Size
28" - 41" (71cm - 105cm) 2 - 4 years 12 inches
36" - 43" (92cm - 110cm) 3 - 5 years 14 inches
40" - 47" (102cm - 120cm) 4 - 7 years 16 inches
43" - 51" (108cm - 130cm) 5 - 8 years 18 inches
45" - 56" (115cm - 142cm) 7 - 10 years 20 inches
45" - 66" (115cm - 168cm) 8 - 12 years 24 inches & 26 inches

Explore JOYSTAR Kids Bike Collections

Balance Bikes

Skip training wheels! Balance bikes are the perfect way to develop balance and coordination, making learning to ride faster and more fun.

  • Recommended Height: 28" - 38" (71cm - 97cm)
  • Age Range: 1-3 years, 2-4 years

Popular Models: Roller Series, Marcher Series, Roadster Series

Beginner Bikes

Designed for young riders learning to ride and have fun. Many models include removable training wheels for extra stability.

  • Recommended Height: 28" - 60" (71cm - 152cm)
  • Age Range: 2-10 years

Popular Models: Little Daisy, Totem Series, Angel Series

Electric Bikes

A cool option for older kids and teens to experience the fun of power-assisted riding and expand their range.

  • Recommended Height: 48"+ (122cm+)
  • Age Range: 7+ years (kids & teens)

Popular Models: JOYSTAR 20" & 24" Electric Bikes

Mountain & BMX Bikes

Young riders can start exploring trails and experience outdoor adventures with these sturdy bicycles.

  • Recommended Height: 56"+ (142cm+)
  • Age Range: 9+ years (kids & teens)

Popular Models: Brockway Freestyle, Contenders MTB,

Why Choose JOYSTAR Bikes

Safety First

All our bikes meet the highest safety standards with child-friendly features.

Eco-Friendly

We use sustainable materials and processes to protect our planet.

Quality Craftsmanship

Durable construction designed to withstand years of active use.

Happy Kids

Designed to build confidence and create joyful riding experiences.

What Parents Say

"My 2-year-old learned to ride in just one weekend with his JOYSTAR balance bike. The transition to a pedal bike was seamless!"

Tina Chen

Sarah Johnson

Mother of two

"This bike was a birthday gift for my 6-year-old granddaughter. It was super easy to assemble. The only part I thought was pretty cheap was the bell. It needs a better bell. Even the wicker basket and its attachment straps were better thought out and made than the bell. We will see how it stands up to the rigors of a 6-year-old!"

Michael Roberts

Michael Roberts

Father of three

"Love this vintage style bike. With the banana seat it came with a cute lil basket, an it also came with stickers, for your name. My daughter loves it!"

Marry

Marry

JOYSTAR customer

Frequently Asked Questions

How do I measure my child for a bike? +
Kids' bikes should be selected by height rather than age. Measure your child's height and then find the corresponding wheel size in our sizing chart above.
What size bike does my child need? +
Using our bike sizing chart is the best way to determine the correct size. If your child is between two sizes, choosing the larger size typically allows for longer use.
At what age can a child start learning to ride a bike? +
This varies by child, but here are some general guidelines:
  • 1.5 - 2 years: If your child walks confidently with good balance and motor skills, they may be ready for a balance bike.
  • 2 - 3 years: Most children are ready for balance bikes.
  • 3 - 5 years: Many children will be ready to learn to ride a pedal bike.
What safety gear should my child wear? +
Always ensure your child wears a properly fitted helmet. We also recommend knee pads, elbow pads, and closed-toe shoes for added protection, especially when learning.
What about kids’ bikes with training wheels? +
You probably learned to ride by using training wheels, and most professional cyclists probably did, too. Training wheels are a great way to get kids comfortable riding, and to get them hooked on the feeling of freedom that only a bike can provide. They’re a good choice for kids who are too big for a balance bike or simply need a bit more time to gain confidence.
What's with these different kids' bike brakes? +
As kids gain riding skills, the bikes available to them will have more brake options. You want to start them off with no brakes (balance bikes) or a coaster brake (the kind of braking that engages when you pedal backwards) because it's intuitive to put your feet down or pedal backwards to stop. Once they are comfortable stopping themselves using these brakes, and have more developed muscles in their hands, they can upgrade to hand brakes. Some kids’ bikes even have both a coaster brake and hand brake so kids can start getting comfortable with them sooner.
Should I need to assemble the new bike? +
Yes! All JOYSTAR bikes come with 85% assembled boy and detailed assembly instructions, and you can find ourAssembly Guides Video . Contact our customer service for help if you really need: joystar_service@joykie.com.