SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/bike-helmet-two-fingers

How low should a bike helmet sit on your forehead?

About two finger widths above your eyebrows.

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  1. About two finger widths above your eyebrows ✔
  2. Tipped back to show your whole forehead
  3. Down over your eyebrows

Why: A helmet pushed back on your head leaves your forehead open. Set it level and low, so only about two fingers fit between your eyebrows and the helmet's edge.

Huh, didn't know that: The widest part of the helmet should rest against the back of your head, so don't wear it backwards.

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I measured my helmet fit with two fingers. It's a handy rule.
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References

Answer: About two finger widths above your eyebrows. A helmet pushed back on your head leaves your forehead open. Set it level and low, so only about two fingers fit between your eyebrows and the helmet's edge.

  1. City of Portland: How to fit a helmet www.portland.gov/transportation/walking-biking-transit-safety/safe-routes/how-fit-helmet
    Only two fingers should fit between your eyebrows and the bottom of the helmet.
    Checked 2026-10-12.
  2. NHTSA: Fitting Your Bike Helmet (hosted by ND Dept. of Health) www.ndhealth.gov/injury/publications/8019_Fitting-A-Helmet.pdf
    one or two finger-widths above your eyebrow
    Checked 2026-10-12.

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