[header] How to measure a toddler for a bike [title] Gather the materials needed for taking your child's measurement. [step] You'll need measuring tape, a pencil, and a book or a ruler (or some other flat surface). [title] Have your child stand upright against a wall. 
[step] Their head should be facing straight ahead, and not tilted upwards or downwards, so you do not get a faulty measurement of their height. [substeps] Make sure their feet are side by side, with both feet firmly on the floor and their heels touching the wall.