BMI Calculator
Your body mass index, weight category, and healthy weight range — metric or imperial.
OpenNew to tracking? Start with your TDEE to find your daily calories, set targets with the Macro Calculator, and check the baselines with BMI and Body Fat. For general guidance only — talk to a doctor before big changes.
Body & energy
Your baseline numbers — calories, body composition, and metabolism.
Body Fat Calculator
Estimate your body fat percentage with the U.S. Navy tape method — no calipers — plus your category.
OpenCalorie Calculator
Your daily calories (TDEE) from the Mifflin-St Jeor formula, with targets to maintain, lose, or gain weight.
OpenIntermittent Fasting Calculator
Plan your intermittent fasting schedule with eating and fasting windows for your chosen protocol.
OpenMacro Calculator
Turn your daily calories into grams of protein, carbs, and fat — balanced, high-protein, low-carb, or keto.
OpenTDEE Calculator
Calculate your total daily energy expenditure from your activity level and metabolism to manage fitness and nutrition goals.
OpenCalories Burned Calculator
Estimate the calories you burn in an activity from its MET value, your weight, and the minutes.
OpenDaily wellness
The everyday habits — hydration and sleep.
More health tools
Every other calculator tagged health.
A1C & Average Glucose Converter
Convert HbA1c (%) to estimated average glucose (eAG) in mg/dL or mmol/L — and back — using the ADA / ADAG formula, with the ADA category.
OpenMedication Schedule Planner
Build a clean, printable daily medication schedule by time of day — morning, noon, evening & bedtime, with doses and a check-off column. Autosaves locally; an organizer, not medical advice.
OpenProtein Intake Calculator
Your daily protein in grams from body weight, activity & goal (maintain, build muscle, or lose fat) — with a per-meal target. Uses standard g/kg guidelines.
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