Ovarian Volume Calculator
Calculate ovarian volume using ultrasound measurements with the ellipsoid formula. This tool helps assess ovarian health and function in clinical practice.
How to Use This Calculator
- Enter the three dimensions of the ovary (length, width, and height) in millimeters as measured by ultrasound
- Select which ovary is being measured (left or right)
- Enter the patient's age and menstrual status for appropriate reference ranges
- Click Calculate to see the ovarian volume in cubic centimeters and how it compares to normal ranges
Formula Used
Volume = (π/6) × Length × Width × Height
Where:
- Volume = Ovarian volume in cubic centimeters (cm³)
- Length = The longest dimension of the ovary in millimeters (mm)
- Width = The transverse dimension of the ovary in millimeters (mm)
- Height = The anteroposterior dimension of the ovary in millimeters (mm)
- π = Pi (approximately 3.14159)
Example Calculation
Real-World Scenario:
A 32-year-old premenopausal woman undergoes a pelvic ultrasound. The radiologist measures her right ovary with the following dimensions: length 30mm, width 20mm, and height 15mm.
Given:
- Length = 30 mm
- Width = 20 mm
- Height = 15 mm
Calculation:
Volume = (π/6) × 30 × 20 × 15 = 4712.39 mm³ = 4.71 cm³
Result: The ovarian volume is 4.71 cm³, which falls within the normal range for a premenopausal woman (3-12 cm³).
Why This Calculation Matters
Clinical Applications
- Assessment of ovarian reserve and fertility potential
- Diagnosis and monitoring of polycystic ovary syndrome (PCOS)
- Evaluation of ovarian tumors or cysts
- Monitoring ovarian response to fertility treatments
Key Benefits
- Standardized method for ovarian assessment
- Helps identify abnormal ovarian sizes
- Provides quantitative data for clinical decision-making
- Enables tracking of changes over time
Common Mistakes & Tips
Frequently Asked Questions
References & Disclaimer
Medical Disclaimer
This calculator is intended for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.
References
- "Ovarian volume measurement by ultrasound: Is it reproducible?" - European Journal of Obstetrics & Gynecology and Reproductive Biology (2015)
- "Revised diagnostic criteria for PCOS: Rotterdam ESHRE/ASRM-Sponsored PCOS Consensus Workshop Group" - Fertility and Sterility (2004)
- "Reference ranges for ovarian volume in reproductive age and postmenopausal women" - Menopause (2019)
Accuracy Notice
The accuracy of ovarian volume calculation depends on the precision of ultrasound measurements. Variations in measurement technique, equipment, and operator skill can affect results. This calculator should be used as part of a comprehensive clinical evaluation by qualified healthcare professionals.
About the Author
Kumaravel Madhavan
Web developer and data researcher creating accurate, easy-to-use calculators across health, finance, education, and construction and more. Works with subject-matter experts to ensure formulas meet trusted standards like WHO, NIH, and ISO.