Last updated: October 31, 2026 · Written by Juan · Researched using published graft tables from three hair restoration practices and the original Norwood classification paper (linked below)
This article is educational only. It is not medical advice, and I am not a doctor. The graft figures below are ranges published by clinics, not a prediction for your case: your donor density, hair type and goals can move them a long way in either direction. Only a qualified surgeon who has assessed you can tell you what is realistic. See our Editorial Policy for how we research and update our articles.
The most important number in hair transplant planning is not how much hair you have lost. It is how much healthy donor hair you have left. The Norwood scale is the system surgeons use to describe the stage of male pattern hair loss, and it is the usual starting point for estimating how many grafts a case will need. It comes from a classification published by Dr. O’Tar Norwood in the Southern Medical Journal, based on 1,000 adult men. This guide looks at four stages, 2, 4, 6 and 7, and at what the published graft ranges suggest for each.
Quick reference
| Norwood stage | Pattern | Graft range across the published guides | Realistic goal |
|---|---|---|---|
| Stage 2 | Mild recession at the temples, crown untouched | About 500 to 1,500 | A natural-looking hairline is usually achievable |
| Stage 4 | Deeper frontal recession plus a separate thinning crown | About 2,200 to 3,800, depending on whether the crown is treated | Both areas can usually be treated, often with the front first and the crown later |
| Stage 6 | Front and crown have joined into one bald area | About 3,000 to 7,000, usually over more than one session | Coverage has to be prioritized; full density everywhere is rarely possible |
| Stage 7 | Only a band of hair remains at the sides and back | About 3,200 to 8,000 or more, usually limited by donor supply | A conservative hairline with density concentrated at the front |
The ranges in the table combine three published sources, and they do not agree exactly. Bernstein Medical gives figures for a first session and for the total across all sessions, with and without the crown. Charles Medical Group and Acibadem International give a single range per stage. The spread between them is a useful reminder that these numbers are rough. Charles Medical Group notes that two patients at the same stage can differ by 1,000 grafts or more.
Stage 2: mild recession
At Stage 2 the hairline has moved back slightly at the temples, the crown is untouched, and the donor area is still at full density. That combination makes it one of the more straightforward stages to treat, because the gap between the current hairline and a natural target is small.
Published ranges: Bernstein Medical lists 800 to 1,400 grafts for a first session at Class IIa. Charles Medical Group gives 500 to 1,500 grafts for Stage 2. Because so little donor hair is used, plenty is left for later.
Worth discussing with a surgeon: whether your hair loss has stabilized. At this stage, especially if you are young, a good surgeon plans for how your hair loss is likely to progress, not only for how you look today, and may suggest medication before or alongside surgery. Our article on how young is too young explains why.
Stage 4: two areas competing for the same donor hair
By Stage 4 the frontal recession has deepened and a separate thinning area has appeared at the crown, usually still divided from the front by a band of hair. This is the first stage where donor planning becomes important, because two areas now compete for a limited supply.
Published ranges: Bernstein Medical lists 1,600 to 2,200 grafts for a first session at Class IV, or 2,200 to 2,600 if the crown is included, and 2,200 to 3,400 in total across sessions (3,400 to 3,800 with the crown). Charles Medical Group gives 2,500 to 3,500 grafts for Stage 4.
Worth discussing with a surgeon: whether to treat the crown now or later. Bernstein Medical advises treating the crown in a first session only when donor supply is above average and further hair loss is expected to be limited. Our guide to why the crown is harder explains the reasons.
Stage 6: deciding what to prioritize
At Stage 6 the front and crown have joined into one bald area, leaving a horseshoe-shaped band of hair at the sides and back. That band is now the whole donor supply.
Published ranges: Bernstein Medical lists 3,000 to 4,600 grafts in total across sessions for Class VI, or 4,600 to 5,600 with the crown. Charles Medical Group gives 4,000 to 7,000 grafts, often across several sessions, and Acibadem International gives 4,000 to 5,500. Acibadem also notes that a Norwood 6 bald area can measure 200 cm² or more, and that spreading 2,000 grafts over it would be too sparse to look natural.
In practice this means the conversation moves from restoring everything to deciding what matters most visually, usually the hairline and the front of the scalp, with lower density further back. Some surgeons add beard or body hair when scalp donor hair runs short.
Worth discussing with a surgeon: a measurement of your donor density, and a clear plan for which areas get priority and which will be left thinner by design. Our guide to clinics for advanced baldness covers the questions to ask.
Stage 7: where expectations matter most
Stage 7 is the most advanced stage on the scale: only a narrow band of hair remains at the sides and back. It is also where the gap between what people hope for and what is possible tends to be widest.
Published ranges: Bernstein Medical lists 3,200 to 5,000 grafts in total across sessions for Class VII, or 5,000 to 6,400 with the crown. Charles Medical Group gives 5,000 to 8,000 or more, and Acibadem International 5,000 to 7,000 or more, describing Stage 7 as often limited by donor supply. Those numbers sit close to the total donor budget most people have: Charles Medical Group puts it at about 6,000 to 8,000 grafts over a lifetime, and Acibadem International at roughly 4,000 to 7,000 for most men.
Acibadem International states that many Stage 7 patients do not have enough donor hair to cover the whole area at a convincing density, and that surgeons should prioritize the front over the crown. A good result at this stage usually means a conservative, slightly higher hairline, with density concentrated at the front and tapering towards the back. If you are comparing clinics, look closely at before/after photos of advanced cases: check that the crown is shown and that the “before” photo is a true Stage 7. Our guide to spotting misleading photos explains what to look for.
Worth discussing with a surgeon: whether a transplant alone is the right tool, or whether combining a conservative transplant with scalp micropigmentation would cover more of what you want.
Why the same stage can need very different graft counts
The Norwood scale describes the pattern of hair loss. It does not measure several things that change the plan:
- Donor density and scalp flexibility. Bernstein Medical puts typical donor density at roughly 90 to 100 follicular units per square centimeter, and both density and how loose the scalp is affect how many grafts can be taken safely.
- Hair thickness and curl. Thicker or curlier hair tends to cover more of the scalp per graft than fine, straight hair.
- Your target density. Someone happy with moderate coverage needs fewer grafts than someone who wants maximum density in the same area.
That is why the question “how many grafts do I need?” cannot be answered from the scale alone. It takes an assessment of your scalp.
Frequently asked questions
What does “Stage 3 vertex” mean? It describes frontal recession with early thinning at the crown, without the full Stage 4 pattern. Bernstein Medical lists it as its own class in its graft table. Real hair loss does not always fit neatly into one stage, and a surgeon will assess your actual pattern.
Does the Norwood scale apply to women? No. Female pattern hair loss usually looks different and is classified with other systems, most often the Ludwig scale. See our guide to female hair transplants.
If I am Stage 6 or 7, is a transplant worth doing at all? It can be, but the goal changes from full restoration to making the best use of a limited donor supply, usually by prioritizing the front. A surgeon with experience in advanced cases can tell you what is achievable for you.
Will my hair loss stop after a transplant? Not necessarily. Transplanted hair comes from donor areas that are usually resistant to pattern hair loss, but the native hair around it can keep thinning. Bernstein Medical lists accounting for further hair loss as one of the goals of a second session, and many surgeons recommend medication to protect the hair you still have. Our guide to second transplants covers what changes the second time.
This article is for information only and is not medical advice. Always consult a qualified, licensed surgeon about your donor supply and realistic goals before making any decision about surgery.
Sources consulted: Bernstein Medical: Graft numbers; Charles Medical Group: How many grafts do I need?; Acibadem International: Norwood stage to graft count; Norwood, Southern Medical Journal: Male pattern baldness, classification and incidence; Charles Medical Group: Ludwig scale guide.