Pregnancy & Postpartum Activity Planning

Estimate a due date and gestational age from a last menstrual period and 20–45 day cycle, with calendar-safe arithmetic and clear ultrasound-dating limits.

Estimate an LMP-based due date with usual-cycle adjustment and reproducible as-of gestational age, with clinical dating limits.

Calculate adult BMI from metric or imperial height and weight. See CDC screening categories, formula steps, and limitations without treating BMI as a diagnosis.

Compare adult BMR equations and a selected activity-multiplier TDEE scenario without generating calorie, macro, or meal prescriptions.

Convert a user-selected energy total and carbohydrate, protein, and fat percentages into calories and grams with adult AMDR context.

Keep tasks, dates, responsibilities, verified sources and learning evidence together with local saving, filtered CSV and JSON backup.

Combine required and confirmed weekly care windows to find uncovered minutes and exact gaps without double-counting overlaps.

Plan recurring care and supplies, one-time arrival costs and a separately entered change in take-home income over a period you choose.

Apply entered in-network deductible, coinsurance, copays, and out-of-pocket maximum terms to an entered allowed-charge scenario, plus premiums.

Build a complete monthly household plan with annual bills and savings, or follow dated transactions to find early shortfalls and extra opening cash needs.

Reconcile a user-selected emergency reserve target from essential monthly outflows, chosen coverage months, a one-time buffer, and accessible savings.

Estimate adult body-fat percentage with a sex-specific U.S. Navy circumference equation, explicit measurement guidance, unit conversion, and non-diagnostic limitations.

Estimate adult basal metabolic rate with Mifflin–St Jeor, revised Harris–Benedict, or Katch–McArdle, plus a clearly labeled activity-multiplier TDEE scenario.

Calculate average pace per kilometer and mile plus speed from one entered distance and elapsed time. Transparent constant-pace arithmetic, not a race predictor.

Calculate a user-entered heart-rate-reserve percentage range with the Tanaka age-estimated maximum. Shows formula and limits; never prescribes training zones.

Reproduce mean kilometre/mile pace and speed from one completed source-owned race result and retained event distance, with an optional same-result displayed-pace comparison—without creating targets, splits, predictions or training advice.

Reconcile one completed conventional bicycle gear-pair record from whole tooth counts, measured loaded wheel rollout, and installed crank length.

Reconcile one completed bicycle cadence-speed interval from whole-tooth gearing, measured loaded rollout, recorded speed, and observed distance/time.

Calculate average swim pace per 100 meters or yards from distance and elapsed time, with fractional seconds, clear units and saved calculation reports.

Reproduce and reconcile the two-point critical swim speed calculation from one source-labelled completed 200 m and 400 m record without prescribing training.

Reconcile one completed session-RPE load with its protocol, duration, global rating, source context, and independent same-record result.

Compare Devine, Robinson and Miller adult reference-weight formulas and a separate BMI screening interval without prescribing a target.

Compare adult beverage water with National Academies total-water Adequate Intake references while keeping food water and individual needs explicit.