BBT Calculator | Basal Body Temperature

Took your basal temp at the wrong time? Use this tool to adjust an early or late reading back to your usual check time. It returns the adjusted BBT and the difference. BBT Time Adjuster Usual temperature check time Actual temperature check time Units °F (default) °C Measured temperature (°F) Show advanced options Timing model … Read more

Placenta Accreta Spectrum (PAS) Risk Calculator

Use this tool to estimate Placenta Accreta Spectrum (PAS) risk based on placenta position and prior caesareans. It returns a simple risk band and educational next steps. Placenta Accreta Spectrum (PAS) Risk Calculator Previa status: None Low-lying Marginal previa Complete previa Prior C-sections Use 3 for 3 or more. Placenta location: Anterior Posterior Show advanced … Read more

Vanishing Twin Probability Calculator (by Week and Twin Type)

Use this tool to interpret vanishing twin risk by week and twin type. It shows risk now, a short projection to next week, and when to seek care. Vanishing Twin / Twin Survival Probability Twin type: Di/Di (two placentas, two sacs) Mono/Di (one placenta, two sacs) Mono/Mono (one placenta, one sac) Gestational age weeks days … Read more

AFC Percentile by Age Calculator (Antral Follicle Count)

Use this tool to interpret antral follicle count by age. It gives an age-adjusted percentile, a plain-language meaning, and suggested re-test timing. AFC Percentile by Age (Antral Follicle Count) Age (years) AFC count Count from both ovaries on early-cycle ultrasound. Show advanced inputs Cycle day at scan (if known) On hormonal contraception? Yes No PCOS … Read more

Progesterone Levels in Early Pregnancy: Calculator and Interpretation (ng/mL ↔ nmol/L)

Use this tool to interpret a progesterone test in early pregnancy. Enter your value, unit, and gestational age or days past ovulation to see a level band and next steps. Progesterone Level Interpreter (Early Pregnancy) Units: ng/mL nmol/L Progesterone value (ng/mL) Converter: ≈ 57.2 nmol/L Use gestational age or DPO: Gestational age (weeks + days) … Read more

Placenta Previa and Low-Lying Placenta Resolution Calculator (by Week and mm)

Use this tool to interpret a low-lying placenta or placenta previa by gestational age, type, and distance from the cervix. It returns an educational resolution probability and a suggested re-scan window. Placenta Previa and Low-Lying Placenta Resolution Calculator Gestational age at diagnosis weeks days Distance from internal os (mm) Report translator: “complete previa” usually means … Read more

Subchorionic Hematoma Risk Calculator (by Week and Size)

Use this tool to interpret a subchorionic hematoma in early pregnancy based on gestational age and size of the sac. It gives an educational risk band, context, and when to seek care. Subchorionic Hematoma Risk by Week and Size Calculator Gestational age weeks days Size input mode: % of sac mm cm Hematoma size (% … Read more

Postpartum Ovulation & Fertility: Calculator

Estimate when ovulation may return after birth using feeding patterns and cycle status. See LAM eligibility, probability by month, first fertile window, earliest reliable test day, and when to consult. Baby & feeding Baby age (months) Breastmilk exclusivity (%) 100 means only breastmilk. Count water and solids as not exclusive. Night feeds (number per night) … Read more

Embryo Grade Success Rate: Chances by Grade & Day

Enter embryo grade and transfer day to estimate implantation and live birth chances for your context. See per-transfer ranges, odds after 1–3 transfers, and multiples risk if transferring two. Egg source Own eggsDonor eggs Egg or embryo age (years) Cycle type IVFICSI PGT status UntestedPGT euploidPGT aneuploid Day of transfer Day 5Day 6Day 3 Embryos … Read more

Semen Analysis & TMSC Interpreter

Enter semen volume, concentration, motility and morphology to calculate TMSC and see classifications against WHO 6th thresholds. You also get a plain-language summary, confounder notes, and when to repeat testing. Semen values Volume (mL) Concentration (million per mL) Total motility (%) Progressive motility (%) Morphology (% normal forms) Morphology method Kruger strictWHO 6th edition (context-based) … Read more