For educational and reference use only. These calculators do not replace clinical judgement, local protocols, or a qualified clinician. Verify every result independently before it informs patient care.
Body imaging
Gonadal (Testicular / Ovarian) Volume
Volume of a testis or ovary from three ultrasound dimensions. Testicular volume uses the empirical Lambert factor (0.71), which best matches water displacement; ovarian volume uses the standard ellipsoid factor (π/6).
Result
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Enter all values to calculate.
Formula
Testis = L × W × H × 0.71 (Lambert). Ovary = L × W × H × π/6.
References
- Lambert B. The frequency of mumps and of mumps orchitis. Acta Genet Stat Med 1951 (testicular volume factor 0.71).
- Rotterdam ESHRE/ASRM-Sponsored PCOS Consensus Workshop Group. Revised 2003 consensus on diagnostic criteria for polycystic ovary syndrome. Hum Reprod 2004;19:41–47 (ovarian volume >10 mL, ellipsoid factor).
Disclaimer
Volume factors and normal ranges vary with age and pubertal status. Ovarian volume varies across the menstrual cycle. Interpret with clinical context.
For educational and reference use only. These calculators do not replace clinical judgement, local protocols, or a qualified clinician. Verify every result independently before it informs patient care.
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