Football helmet sizing starts with one measurement: head circumference, taken about an inch above the eyebrows. Youth sizes typically run roughly 19-22.5 inches and adult sizes roughly 20.5-24+, but every brand cuts its chart differently – the manufacturer’s own chart always wins.
Here’s the general guide, plus the fit tests that matter more than the number.
FOOTBALL GEAR
Football Helmet Sizing
Measured in inches, proven by fit
THE MEASUREMENT
Head circumference
Measured about 1 inch above the eyebrows
YOUTH RANGE
Roughly 19-22 inches
Small through large, brand depending
ADULT RANGE
Roughly 20.5-24+ inches
S through XXL across major brands
THE RULE
Brand chart wins
Every manufacturer sizes differently – always check theirs
Football helmet size chart (typical ranges)
General guide – always confirm with the specific brand’s chart
| Size |
Typical head circumference |
| How to measure |
Wrap a soft tape around the head about 1 inch above the eyebrows and ears – the widest point. Measure twice; use the larger number |
| Youth Small |
Roughly 19 – 20.5 inches – common for younger elementary-age players |
| Youth Medium |
Roughly 20.5 – 21.5 inches – the most common youth size |
| Youth Large |
Roughly 21.5 – 22.5 inches – bigger kids often fit adult smalls instead |
| Adult S / M |
Roughly 20.5 – 21.5 / 21.5 – 22.5 inches – overlapping youth large on purpose |
| Adult L / XL+ |
Roughly 22.5 – 23.5 / 23.5+ inches – XXL exists at most major brands |
The fit test
Sizing is the start – fit is the point
| Check |
What right looks like |
| The snugness test |
Firm, even pressure all around – no gaps at the temples or crown, and the skin of the forehead should move WITH the helmet when you rotate it |
| The eyebrow line |
The front pad should sit about one inch above the eyebrows – riding higher exposes the forehead, lower blocks vision |
| The shake test |
With the chinstrap buckled, shaking the head should not shift the helmet independently – shifting means too big |
| Air bladders and pads |
Modern helmets fine-tune with inflatable liners and swappable pads – size gets you close, fitting gets you right |
HELMET FIT FACTS
Hair changes size
A fresh haircut or a season of growth genuinely moves the fit – recheck after big hair changes. This is a real thing equipment managers deal with.
Certification matters
Look for NOCSAE certification and follow reconditioning schedules – an uncertified or expired helmet is not protective equipment.
When in doubt, size down snug
A helmet that’s slightly snug and properly padded beats a loose one every time – loose helmets rotate on impact.
Size Is a Starting Point, Fit Is the Job
The chart gets a player into the right shell; the fitting – air bladders, pad swaps, chinstrap tension, the shake test – is what makes the helmet protective. Youth large and adult small overlap by design, so growing players should be fitted rather than assumed into a category, and any big change (haircut included) is a reason to recheck. Pair the helmet fitting with the shoulder pad size chart for the full protective setup. League equipment and safety standards live at NFL Football Operations.
The Bottom Line
Measure an inch above the eyebrows, land in the brand’s range, then fit until the shake test passes and the front pad sits at the eyebrow line – a helmet sized by chart and fitted by hand is the whole point of the chart.
