Hair Loss Progression Calculator

Norwood scale staging and treatment cost comparison.

Medical Disclaimer

This calculator is for informational and educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making decisions about your health. Never disregard professional medical advice or delay seeking it because of results from this tool.

Inputs

Current age

Age hair loss began

Current Norwood stage (1-7)

Father bald/balding (0=No, 1=Yes)

Maternal grandfather bald (0=No, 1=Yes)

Years to project

On finasteride/dutasteride (0=No, 1=Yes)

Tab to move between fields

Results

Projected Norwood stage

Without treatment stage5

With treatment stage3.4

Progression rate (stages/yr)0.2

Years to next stage5

Scalp affected (%)26.7

Grafts needed for restoration3,000

Donor area adequate? (1=Yes)1

Aggressiveness (0-3)2

Genetic risk multiplier1

Observed Rate0.15%

How to Use This Calculator

Enter your current age and the age hair loss began, then rate your current Norwood stage (1 = full hair, 7 = extensive loss).
Set family history flags: indicate if your father and maternal grandfather were bald.
Enter years to project and whether you are currently on finasteride or dutasteride treatment.
Read Projected Norwood stage with and without treatment to compare outcomes.
Use Grafts needed for restoration and Donor area adequate to plan a potential hair transplant consultation.

How the result changes with Current Norwood stage (1-7)

Current Norwood stage (1-7)	Projected Norwood stage
1.6	3.6
3.1	5.1
4.9	6.9
6.4	7

What each input means

Current age: Your current age.
Age hair loss began: Age when you first noticed hair thinning or recession.
Current Norwood stage (1-7): 1=full hair, 2=slight recession, 3=clinical baldness, 4-5=progressing, 6-7=extensive.
Father bald/balding (0=No, 1=Yes): 1 if your father experienced significant hair loss.
Maternal grandfather bald (0=No, 1=Yes): 1 if your mother's father was bald. The AR gene on the X chromosome is a strong predictor.
Years to project: How many years into the future to estimate.
On finasteride/dutasteride (0=No, 1=Yes): 1 if currently taking a DHT blocker (finasteride or dutasteride).

What each result means

Projected Norwood stage: Estimated Norwood stage after the projection period, accounting for treatment.
Without treatment stage: Projected stage without any treatment.
With treatment stage: Projected stage with finasteride/dutasteride treatment.
Progression rate (stages/yr): Estimated annual rate of hair loss progression.
Years to next stage: Estimated years until progression to the next Norwood stage without treatment.
Scalp affected (%): Approximate percentage of scalp currently affected by hair loss.
Grafts needed for restoration: Approximate number of hair grafts needed for full restoration at projected stage.
Donor area adequate? (1=Yes): 1 if estimated graft needs are within typical donor supply.
Aggressiveness (0-3): 0=slow, 1=moderate, 2=aggressive, 3=very aggressive hair loss pattern.
Genetic risk multiplier: Multiplier based on family history (1.0=average, higher=more risk).

How this is calculated

Worked example, using the default values

Identify Input Parameters
4 parameters
Current age = 35, Age hair loss began = 22, Current Norwood stage (1-7) = 3, Father bald/balding (0=No, 1=Yes) = 0 = 7 input(s) provided
Calculate Projected Norwood stage
Projected Norwood stage
5 = 5
Calculate Without treatment stage
Without treatment stage
5 = 5
Calculate With treatment stage
With treatment stage
3.4 = 3.4