VitalMetricHubMedical disclaimer
This tool is for informational and educational purposes only. It does not constitute medical advice, diagnosis, or treatment. Always consult your doctor or qualified healthcare professional before making any health-related decisions. Results are estimates only.
Last medically reviewed: March 2026
Content last updated: March 30, 2026
Ovulation calculator
We assume ovulation about 14 days before the next expected period. Cycles vary; tracking BBT, LH kits, or ultrasound is more accurate.
Age notice (18+)
Fertility and pregnancy tools on VitalMetricHub are intended for adults. They are not a substitute for care from an obstetrician, midwife, or other licensed clinician.
VitalMetricHub does not knowingly collect personal information from children under 13 (COPPA). These tools are not directed at minors.
Sources, formulas & further reading
Based on: Calendar estimate: ovulation ~14 days before next menses for a given cycle length.
For additional clinical context, see independent references from the publishers below (WHO, CDC, PubMed, Medscape, ACE, ACOG, NIH, NCBI, USDA — as applicable).