How this estimate works
Graft counts are driven by three factors: how much area needs coverage, how sparse the existing hair is, and how dense the result should look. Each zone in the calculator carries a realistic range based on the graft density commonly required to restore it — the hairline needs fewer grafts per visible result than the crown, where the whorl spreads hair over a wider area.
The density setting then scales the estimate: natural coverage uses fewer grafts and suits patients with limited donor supply, while maximum density places grafts closer together for the fullest result.
