Riding Gear Fit & Sizing Calculator
Enter your head, chest, and hand measurements to get a starting helmet, jacket, and glove size in one place — in centimetres or inches — with what a correct fit should feel like.
Fit is protection
Gear only protects you if it fits. A loose helmet can shift or come off in a crash; a jacket that hangs off the shoulders lets the armour slide away from the joint it is meant to guard; gloves that bunch tire your hands and rob you of feel at the controls. Getting the size band right is the first step, and matching it to the correct feel on your body is the second.
The size ranges here follow common street-gear charts, but they are a shortlist, not the final word — brands and materials vary, so confirm against each maker’s own chart and try the gear on before committing.
Frequently Asked Questions
How do I measure for motorcycle gear?
For a helmet, wrap a tape around the largest part of your head, about 2.5 cm above the eyebrows and ears, keeping it level. For a jacket, measure the fullest part of your chest under the arms over a thin base layer. For gloves, measure around the widest part of your dominant palm just below the knuckles, excluding the thumb. Enter those and the calculator maps each to a size band.
How should each piece actually fit?
A helmet should feel snug all the way around with even pressure and no hot-spots, and the cheek pads should firmly hold your face — it will loosen slightly as the pads break in. A riding jacket should be close enough that the armour stays over your shoulders and elbows, with room for a layer underneath. Gloves should hug the hand with a little slack at the fingertips so the material can pull back as you grip.
Why do brands with the same 'Large' fit differently?
Alpha sizes (S/M/L) are not standardised, and shell shapes and cuts vary — a helmet brand may be rounder or more oval, and a jacket may be cut for a sport or touring posture. That is why the tool shows the numeric measurement band alongside the letter size: match the centimetre range on the brand's own chart rather than trusting the letter alone, and always try gear on.
Is this a guarantee of the right size?
No. It is an educational starting point from widely used size charts. Every rider's head shape, build, and preference differ, and leather versus textile changes the fit again. Use the result to shortlist sizes, then try the gear on — ideally at the end of the day when you are slightly larger — before you buy.
Educational estimate from common size charts — not a fitment guarantee. Fit varies by brand and by leather versus textile; always try gear on before you buy.