Health Tools

Find the best time to wake up or go to sleep based on 90-minute sleep cycles.

Score your sleep quality from 0–100 based on duration, latency, awakenings, restedness, and weekly consistency.

Calculate your Body Mass Index (BMI) and understand your weight category with our easy-to-use BMI calculator supporting both metric and imperial units.

Calculate your body fat percentage using US Navy method and BMI method. Free body fat calculator with comprehensive results, ideal ranges, and health recommendations.

Calculate calories burned during exercise and daily activities. Uses accurate MET values for over 40 activities including running, cycling, swimming, sports, and household tasks.

Track your weekly sleep debt and get a personalised recovery plan based on your sleep goal.

Calculate how much water you should drink per day based on your weight, activity level, and climate.

Track your daily caffeine intake from coffee, tea, energy drinks, and soda. Compare your total to safe limits based on weight, pregnancy, or age, and see sleep impact.

Calculate your daily protein needs based on body weight, activity level, age, and goal (maintain, lose, gain, endurance).

Calculate daily calories and macronutrient targets for maintenance, fat loss, or muscle gain.

Calculate pregnancy due dates from last menstrual period or conception date. Include trimester breakdowns, important milestone dates, appointment schedules, and fetal development information.

Calculate your 5 personalized heart rate training zones using Max HR or Karvonen method. Free calculator for runners, cyclists, and athletes to optimize workout intensity.

Calculate your daily calorie requirements based on age, height, weight, sex, and activity level. Get personalized BMR and TDEE calculations for weight loss, maintenance, and weight gain goals.

Track and monitor your blood pressure readings over time. Log systolic, diastolic, and pulse values with notes. Visualize trends and get category insights.

Track body temperature readings in Celsius or Fahrenheit, monitor fever trends, and export your data locally from your browser.

Predict your next period, fertile window, and ovulation day. Enter your last period date and cycle length to get a 6-month forecast with a visual calendar.

Estimate your ovulation day and 6-day fertile window from your last period date and cycle length. See peak fertility days, implantation window, next period, and a 6-cycle forecast.

Track your daily steps and walking goals. Log steps, monitor streaks, view weekly charts, and see distance and calories burned. Custom step goals with local storage.

Calculate your Waist-to-Height Ratio (WHtR) to assess cardiovascular and metabolic health risk. Supports metric and imperial units with risk categories and health guidance.

Log and monitor your resting, active, and sleeping heart rate over time. View trends, charts by period, and understand your cardiovascular health with category insights.

Estimate your one rep max (1RM) using 6 proven formulas including Epley and Brzycki. Get a full training percentage table for strength programming.

Calculate your Ideal Body Weight (IBW) using Devine, Hamwi, Robinson, and Miller formulas. Also calculates Adjusted Body Weight (AdjBW) for obese patients. Free, instant, and clinically accurate.

Calculate your daily calorie deficit to reach a goal weight by a target date. Get your BMR, TDEE, target intake, and safety guidance based on Mifflin-St Jeor and the 7,700 kcal/kg rule.

Log your daily mood on a 5-point emoji scale, track energy levels, add emotional tags, and view trends and streaks. Private, browser-based mood journal with mood and energy charts.

Track symptoms privately in your browser with daily logs, severity ratings, trend summaries, and JSON backup tools. No sign-up and no cloud sync.

Track and monitor your blood glucose readings over time. Log fasting, before-meal, after-meal, and bedtime values in mg/dL or mmol/L. Visualize trends and get category insights.

Track and monitor your blood oxygen saturation (SpO₂) and pulse readings over time. Log values from your pulse oximeter, tag context (rest, exercise, sleep), and visualize trends.

Track sodium from meals, snacks, and packaged foods against a daily target. Calculate total sodium in milligrams, remaining allowance, percent of target, and salt equivalent.

Calculate daily intake of sodium, potassium, magnesium, and calcium from food, drinks, and supplements. Personalised targets adjust for sex, age, activity level, and sweat loss.

Log meals, snacks, and macros against a personalized daily calorie target. Built-in TDEE calculator (Mifflin-St Jeor), quick-add common foods, meal grouping by breakfast/lunch/dinner/snack, and 7-day history. Saves locally in your browser.

Calculate Body Surface Area (BSA) using six clinical formulas: Mosteller, DuBois, Haycock, Gehan & George, Boyd, and Fujimoto. Used for chemotherapy dosing, cardiac index, and burn assessment.

Track every cigarette not smoked, every dollar saved, every minute of life regained — and see the health recovery milestones your body has hit, from 20-minute heart-rate drop to 15-year cardiac risk normalization.

Log every dose, see what is due today, and track your adherence. Add multiple medications with custom dose times, color tags, start/end dates and notes — all private in your browser.

Plan and track intermittent fasting with a live timer and stage timeline. Pick from 12:12, 14:10, 16:8, 18:6, 20:4, OMAD, 24h, or 36h protocols. See your eating window, fast progress, and what happens in your body at each fasting stage.

Log headaches and migraines with severity, duration, location, triggers, symptoms, medication, and relief. Identify your migraine triggers over time, see top-symptom stats, and export your diary for medical appointments.