About FireArcher
What this is
FireArcher is an independent, advertising-supported site for archery — recurve, compound, and traditional. The numbers archers need day to day (draw weight at a given draw length, arrow spine for a setup, what a round actually scores) tend to live in scattered charts, old forum threads, and half-remembered rules of thumb. This site puts the practical ones in one place, as tools you can use directly.
The tools
There are six, each built around one question. The Draw Length Calculator estimates draw length from arm span (the classic wingspan ÷ 2.5 rule), with a height fallback. The Draw Weight Calculatorconverts a bow’s rated weight at 28 inches into the real peak weight at your own draw length. The Arrow Spine Calculator takes draw weight, arrow length, and point weight and returns a recommended spine range. The Arrow FOC Calculator works out Front-of-Center from arrow length and balance point. The Arrow Kinetic Energy Calculator turns arrow weight and speed into kinetic energy and momentum. And the Archery Scoring Guide is a reference for how target rounds are actually scored.
How they work
None of it is a black box. Draw weight changes by roughly 5% of the rated weight per inch away from 28 inches for recurve and traditional bows (compounds are handled differently). Spine recommendations are read off a published-style carbon spine chart against your inputs. FOC is a direct calculation from where the arrow balances relative to its length. Kinetic energy and momentum come straight from arrow weight and speed — no hidden adjustment.
Where the numbers come from
The reference points are the ones archers already use: Easton-style kinetic energy brackets for small, medium, and large game, and World Archery and NFAA scoring conventions for the 10-ring face, the inner X-ring, and rounds like WA 720, 1440, and Vegas 300. FireArcher is not affiliated with Easton, World Archery, NFAA, or any bow or arrow manufacturer — these are widely published conventions, not proprietary data.
The Museum of Archery
Alongside the tools sits the Museum of Archery, with galleries on the bows, arrows, and gear that shaped the sport, the archers and traditions behind it, and the craft of the bowyer and fletcher. Every entry, image, and fact in it comes from Wikipedia and Wikimedia Commons. The Learn section is its topic-organized reference companion.
Guides & blog
The blog covers buying guides and technique write-ups for recurve, compound, and traditional archery, meant to sit alongside the calculators rather than replace them.
What this isn’t
Every result here is an estimate, not a guarantee — your bow, your arrows, and your form will differ from the averages behind any formula. This is general information, not professional coaching, and archery carries real risk: always follow range safety rules, use proper equipment, and get hands-on instruction from a certified coach before acting on anything you read here.
Ads keep it free
FireArcher runs on advertising, which is how the tools stay free with no account and no paywall. There’s nothing to sign up for and no data collected beyond what serving ads requires.
Questions?
If something’s wrong, confusing, or missing, get in touch.