Tanner Staging (Sexual Maturity Rating)
Tanner staging / Sexual Maturity Rating (Marshall & Tanner 1969/1970) — grades pubertal development on three scales (female breast, male genitalia, and pubic hair), each from stage 1 (prepubertal) to stage 5 (adult).
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Development scale
- Breast (female)
- Tanner stage
- Stage 2
Result: Tanner breast stage 2: breast bud stage - elevation of the breast and papilla as a small mound with enlargement of the areolar diameter.
The tool opens with these values already filled in. Replace them with your own.
What the result means
- Stage 1
- Prepubertal on all three scales (breast, genital, pubic hair).
- Stages 2-4
- Progressive pubertal development; the descriptions differ by scale.
- Stage 5
- Adult development on the selected scale.
What you enter
- Development scale
- Tanner stage
How this is calculated
Marshall WA, Tanner JM. Variations in pattern of pubertal changes in girls. Arch Dis Child. 1969;44(235):291-303; and in boys, Arch Dis Child. 1970;45(239):13-23. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.