Health calculators
Body metrics and health-related calculators for quick personal estimates in the browser.
Adult BMI Calculator — BMI, Healthy Weight & Chart
Calculate adult BMI in metric or US units. See the CDC category, healthy weight range for your height, distance to the range, formula, and a visual BMI chart.
Calorie Calculator — Daily Calorie Intake & Macros
Calculate BMR, TDEE, and daily calories for weight loss, maintenance, or muscle gain in metric or imperial units, with a visual macro breakdown.
Body Fat Calculator — Navy Method & Lean Mass
Estimate body fat from neck, waist, hip, and height measurements, then explore fat mass, lean mass, and a target-weight scenario in metric or US units.
Running Pace Calculator — Time, Distance & Splits
Calculate running pace, finish time, or distance in miles or kilometers, then plan race splits and see treadmill speed and race projections.
Ovulation Calculator — Fertile Window & Cycle Calendar
Estimate ovulation, fertile-window and next-period dates from an average cycle or a variable cycle-length range, with a visual calendar and three-cycle forecast.
Sleep Calculator — Bedtime, Wake Time & Duration
Plan bedtime from a required wake time, compare wake-time options from bedtime, or measure an overnight sleep window with latency, age guidance and a visual timeline.
Pregnancy Due Date Calculator — Weeks, IVF & Timeline
Estimate your due date and gestational age from last period, conception, IVF transfer, ultrasound age, or a known clinical due date, with a week-by-week visual timeline.
Water intake calculator — daily hydration range
Estimate a practical daily drinking range from weight, exercise and heat, with glasses, hourly pace and transparent adjustments.
