Health & Wellness
Fitness, nutrition and body estimates with stated assumptions.
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- BAC CalculatorEstimate blood alcohol content from drinks, weight and time — with clear safety warnings.Health & Wellness
- BMI CalculatorCalculate your Body Mass Index (BMI) in metric or imperial units and see your weight category.Health & Wellness
- Body Fat CalculatorEstimate body-fat percentage with the U.S. Navy tape method, then derive fat mass and lean body mass from body weight.Health & Wellness
- Body Surface Area (BSA) CalculatorEstimate body surface area in m² with the Mosteller formula from height and weight. Education/reference only.Health & Wellness
- Calorie Calculator (TDEE)Estimate your daily calorie needs (TDEE & BMR) and targets to lose, maintain or gain weight.Health & Wellness
- Calories Burned CalculatorEstimate 30 activities by MET value or build a level-walking estimate from steps or distance, time, height and measured step length.Health & Wellness
- Calories Per Serving CalculatorBuild a recipe calorie ledger, divide the complete batch by its actual yield and calculate portion weight and calorie density.Health & Wellness
- Child Height PredictorPredict a child's adult height from the parents' heights using the mid-parental method.Health & Wellness
- Fasting TimerRun a persistent wall-clock fasting schedule with flexible targets, a completion chime and private local history.Health & Wellness
- GPX Route StudioInspect GPX distance, elevation and duration, trim private endpoints, simplify tracks, and export GPX, CSV or GeoJSON.Health & Wellness
- Habit TrackerTrack multiple daily habits on a persistent monthly grid with custom colors, completion rates and CSV or PDF export.Health & Wellness
- Height Comparison Chart & Scale StudioCompare people, characters, photos and reference objects on one precise scale. Customize silhouettes and export beautiful charts.Health & Wellness
- Ideal Weight CalculatorSee your ideal body weight by four medical formulas plus the healthy BMI range.Health & Wellness
- Jet Lag PlannerTurn an itinerary into destination clocks and a conservative sleep-and-daylight adaptation schedule.Health & Wellness
- Macro CalculatorTurn your daily calories into protein, carb and fat gram targets for any diet style.Health & Wellness
- Medication Dosage Calculator (mg/kg)Weight-based dose calculator: total mg from mg/kg and patient weight, plus volume to draw from a concentration. Education/reference only.Health & Wellness
- One Rep Max CalculatorEstimate your 1RM from any set, with training percentages for programming.Health & Wellness
- Ovulation CalculatorEstimate your ovulation date, fertile window, next period and potential due date from your cycle.Health & Wellness
- Pace CalculatorCalculate running pace per mile and kilometer, plus speed, from your distance and time.Health & Wellness
- Pregnancy Due Date CalculatorEstimate your pregnancy due date from your last period, plus how far along you are.Health & Wellness
- Protein Intake CalculatorGet a daily protein range in grams from body weight, training level and goal, with a per-meal split.Health & Wellness
- Sleep CalculatorFind the best bedtime or wake-up time based on 90-minute sleep cycles.Health & Wellness
- Target Heart Rate CalculatorFind your five training heart-rate zones with the Karvonen method.Health & Wellness
- VO2 Max CalculatorEstimate aerobic capacity from a Cooper 12-minute run or Rockport one-mile walk with method-specific validation.Health & Wellness
- Waist-To-Height Ratio CalculatorCompare waist with height on a clear 0.5 reference rail using NICE central-adiposity guidance.Health & Wellness
- Water Intake CalculatorEstimate a daily water target from body weight, exercise, climate and pregnancy or breastfeeding status.Health & Wellness
- Weight Loss Timeline CalculatorMap a gradual weekly weight-change assumption to milestone dates while keeping uncertainty explicit.Health & Wellness