Running, Cycling & Endurance

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

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.

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.

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.

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