What Size Kids Bike Does My Child Need? A Parent's Guide

Buying your child's first bike — or their next one — can be confusing. Walk into any bike shop and you'll see a wall of different wheel sizes, and it's not always obvious which one is right. Here's a simple guide to help Darwin parents get it right the first time.

Start with height, not age

Every child develops differently — a confident 5 year old might be ready for a 20" while another child the same age is still happy on a 16". Wheel size should be based on height and ability, not age. Use this as a starting point:

• Balance bike — under 85cm
• 12" — 80–95cm
• 16" — 100–115cm
• 20" — 110–130cm
• 24" — 125–140cm
• 26" — 135cm+

These are a guide only. The best way to get it right is to come in and try the bike — bring your child in and we'll find the perfect fit on the spot. We're open 7 days in Coconut Grove.

Balance bikes first

If your child isn't yet ready for pedals, skip the training wheels and go straight to a balance bike. Kids learn to balance and steer naturally, then transition to a pedal bike much faster. The Cruzee balance bike is one of the lightest on the market — at just 1.9kg your child won't be wrestling with it.

What to look for in Darwin

Darwin's riding conditions are pretty ideal for kids — flat streets, sealed bike paths and dry season weather that's perfect for getting outside. A few things worth considering locally:

• Lightweight frames — Darwin is hot. A heavy bike is harder to ride and less fun. Look for alloy frames over steel.
• Easy brakes — smaller hands need levers they can actually squeeze. Check the brake reach before you buy.
• Puncture resistance — bike paths around Coconut Grove and Nightcliff can have thorns and debris, adding sealant is worth it.

Our kids bike range - Check It Here

At Blue Cycles Darwin we stock kids bikes from balance bike age all the way through to 26" — brands include Sunpeed, Cruzee, Avanti and GT, starting from $270.

Every bike is assembled and checked by our mechanics before it leaves the shop. We're open 7 days in Coconut Grove, so bring the kids in and we'll find the right fit on the spot.

Shop Kids Bikes →