Frame size chart for BMX bikes

This chart will recommend a BMX bike frame size based on your height measurement.
You can also try our Bike Size Calculator.
BMX Bike Size Chart

Measuring Your Height H

Take off your shoes. Remove anything from your head. Stand against the wall. Put a book to the top of your head. Mark the place on the wall where the bottom of the box is resting. Measure from the floor to the pencil mark with a measuring tape.

Frame Measurement TT

BMX bikes are measured from the center of the seat tube to center of the head tube. BMX bike frame sizing is generally measured in inches (in).

Height (ft&in/cm) Top Tube (in) Crank Size (mm)
4'/122 15.0 150
4'1"/124 15.0-15.5 150-155
4'2"/127 15.0-16.0 150-160
4'3"/130 15.5-16.0 155-160
4'4"/132 16.0-16.5 155-160
4'5"/135 16.0-16.5 155-160
4'6"/137 16.5-17.0 160-165
4'7"/140 17.0-17.5 160-165
4'8"/142 17.0-17.5 160-165
4'9"/145 17.5-18.0 165-170
4'10"/147 17.5-18.0 165-170
4'11"/150 18.0-18.5 165-170
5'/152 18.5-19.0 170-175
5'1"/155 18.5-19.0 170-175
5'2"/157 19.0-19.5 170-175
5'3"/160 19.5-20.0 175-180
5'4"/163 19.5-20.0 175-180
5'5"/165 20.0-20.5 175-180
5'6"/168 20.0-20.5 175-180
5'7"/170 20.5-21.0 175-180
5'8"/173 21.5-21.5 180-185
5'9"/175 21.5-21.5 180-185
5'10"/178 21.5-22.0 180-185
5'11"/180 22 185
6'/183 22 185
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