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Free AI Donor Supply Graft Calculator

Your donor supply is finite and, once harvested, can't grow back — so planning around it matters as much as planning your recipient area. Upload close-up photos of the back and sides of your scalp and the AI will estimate what's safely extractable for a single upcoming session, and a conservative lifetime reserve to budget across however many sessions you may need.

🔒   No login required — your photos are never stored or shared, and are deleted immediately after analysis.
Upload your donor-area photos

Drop photos or click to upload

JPEG, PNG, WebP · up to 6 photos · 5MB each

Best angles: Back of head Left side Right side Close-up

Assessing your donor area…
Usually takes 10–20 seconds.

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Safe for your next session
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Lifetime donor reserve
Donor density
Hair caliber
Safe zone assessment
Analyzed photos
Key observations
    Guidance
    AI-estimated visual assessment for reference only, not a substitute for an in-person trichoscopy/densitometer exam and manual scalp laxity check. Always have a licensed surgeon confirm your donor supply before planning a session around it.
    Don't know your graft count yet?

    Upload a scalp photo for an instant AI graft count and price estimate.

     Estimate my graft count →

    Why is donor supply finite?

    Only hair in the "safe donor zone" — the horseshoe-shaped band on the back and sides of the scalp — is genetically resistant to the hormone (DHT) that causes pattern hair loss. That band contains a fixed number of follicles. Every graft moved from it is gone from that area for good, which is why over-harvesting early can leave nothing in reserve for a touch-up years later.

    Why two numbers instead of one?

    A single session is capped at roughly 3,500–4,500 grafts regardless of total supply, limited by extraction time and how long grafts can safely stay outside the body. Your lifetime reserve is usually larger — it's the total budget to spend across however many future sessions you may need, not a number to extract all at once.

    What if the tool flags a concern?

    If your photos show signs of thinning within the donor band itself, or scarring from a prior procedure, the estimate will be deliberately more conservative and the tool will flag it. Some patients have diffuse thinning that reaches even the "safe" zone, meaning it isn't as permanent as it looks — this is exactly the kind of finding that needs an in-person trichoscopy before any harvesting plan is finalized.