Enter a fundal height (SFH) in cm to see its percentile for a given gestational age, or switch modes to estimate GA from SFH. You’ll also get the expected SFH, standard deviation, and a ± GA band. Fundal Height (SFH) — Percentile / GA Mode: SFH percentile at a given gestational age Estimate gestational age … Read more
Enter a crown-rump length (CRL) to see gestational age and an estimated due date. You can also pick a target GA to see the expected CRL and a typical range. Crown–Rump Length (CRL) → GA & EDD Units mm cm CRL value (mm) Measurement date (optional) Target GA for expected CRL (optional) Target gestational age … Read more
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
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
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
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
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
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
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
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