Free surfboard volume calculator
Stop guessing your board volume.
Setwave runs a documented, rule-based calculation — the same Guild Factor methodology shapers use — and shows you exactly why it landed on your range. No AI guesswork on the number that actually matters.
How it works
Answer a few questions
Weight, ability, how you surf, and the waves you ride most. Under two minutes — no account needed.
Get an explained range
A recommended volume range in liters, with every adjustment shown and why it was applied. Never a single number pretending to be exact.
See boards that actually fit
Coming soon: a curated set of boards scored against your profile with a rule-based engine, not a black box.
A range, never a guarantee
Every result comes from a documented formula, versioned so we can improve it openly over time — not an AI deciding your board size on the fly. We show our full methodology and every source it's built from directly on the calculator page.