BMI Calculator
Calculate your Body Mass Index, healthy weight range and ideal weight using metric or imperial units.
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Fitness & Health Tools
Browse every fitness & health tool in one place. Compare workflows, open individual calculators and utilities, and keep your internal linking consistent across the category.
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All Fitness & Health Tools
40 totalCalorie Calculator
Estimate daily calorie needs based on age, gender, height, weight and activity level using Mifflin-St Jeor, Harris-Benedict or Katch-McArdle formulas.
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Body Fat Calculator
Estimate body fat percentage using the U.S. Navy method and BMI-based formula. Get body fat mass, lean mass, and ideal fat range for your age.
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Water Intake Calculator
Calculate your recommended daily water intake based on body weight, activity level, exercise, and climate. Results shown in ml, liters, oz, and cups.
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Sleep Cycle Calculator
Find the best bedtime or wake-up time based on 90-minute sleep cycles. Wake up refreshed by timing your sleep with your natural cycle rhythm.
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Heart Rate Zone Calculator
Calculate your 5 personalised heart rate training zones using the Karvonen or basic method. Optimise every workout — fat burning, aerobic, anaerobic and peak performance.
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Pregnancy Due Date Calculator
Estimate your due date, current pregnancy week, conception date, and trimester timeline using LMP, conception date, IVF transfer date, or ultrasound data.
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Ovulation Calculator
Estimate your ovulation date, fertile window, and best days to conceive based on your last period and cycle length. Includes a colour-coded fertility calendar.
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Blood Pressure Chart Analyzer
Instantly classify your blood pressure reading into Normal, Elevated, Hypertension Stage 1 or 2, or Hypertensive Crisis. See chart position, pulse pressure, MAP, and guidance.
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Intermittent Fasting Calculator
Calculate your fasting and eating windows for 14:10, 16:8, 18:6, 20:4, and OMAD protocols. Get your live fasting countdown, 24-hour timeline, and personalised schedule.
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Ideal Weight Calculator
Estimate your ideal body weight using the Devine, Robinson, Miller, and Hamwi formulas. See your healthy BMI range, current weight comparison, and personalised target.
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Macro Nutrients Calculator
Calculate your daily protein, carbs, and fat targets from your BMR and TDEE. Supports Balanced, Low Carb, High Protein, and Ketogenic plans with meal distribution.
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Running Pace Calculator
Calculate your running pace, finish time, or distance. Get split tables, race estimates for 5K/10K/half marathon/marathon, and pace unit conversions.
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Steps to Calories Calculator
Convert step count to calories burned, distance walked, and estimated time. Enter your weight and steps for an instant calorie estimate with activity level interpretation.
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TDEE Calculator
Calculate your Total Daily Energy Expenditure (TDEE) and Basal Metabolic Rate (BMR). Get personalised calorie targets for weight loss, maintenance, and muscle gain.
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BMR Calculator
Calculate your Basal Metabolic Rate (BMR) — the calories your body burns at complete rest. Compare Mifflin-St Jeor, Harris-Benedict, and Katch-McArdle formulas with optional activity-level calorie estimates.
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Age Calculator
Calculate your exact age in years, months, and days. Find out the day you were born, your zodiac sign, next birthday countdown, total days lived, and more.
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Healthy Weight Range
Find your healthy body weight range based on height using BMI 18.5–24.9. See your BMI, weight status, and how much to adjust to reach a healthy weight.
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Stress Level Test
Assess your current stress level with a 15-question self-assessment covering emotional, mental, physical, and behavioral stress indicators. Get a score, category, and personalised recommendations.
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Sleep Quality Analyzer
Evaluate your sleep quality with a 10-question assessment covering sleep duration, latency, disturbances, daytime fatigue, and consistency. Get a sleep score, efficiency rating, and personalised improvement tips.
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Eye Strain Calculator
Assess your digital eye strain risk based on screen time, break habits, screen distance, lighting, and symptoms. Get an eye strain score, risk level, and personalised tips to protect your vision.
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Hydration Reminder Calculator
Calculate your personalized daily water intake target and get a time-based drinking schedule. Enter your weight, wake/sleep times, activity level, climate, and exercise to receive reminder times and water amounts throughout the day.
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Metabolic Age Calculator
Estimate your metabolic age by comparing your Basal Metabolic Rate (BMR) to population averages. Find out if your metabolism is younger or older than your actual age and get personalised tips to improve it.
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Fitness Progress Tracker
Compare your starting and current body measurements to track real fitness progress. Analyse weight loss, body fat reduction, lean mass gain, waist change, and BMI. Get a progress score, insights, and personalised recommendations.
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Lean Body Mass Calculator
Calculate your lean body mass (LBM) — the weight of everything except body fat — using four medical formulas: Boer, James, Hume, and Katch-McArdle. Supports metric and US units. Enter body fat % for the most accurate Katch-McArdle result.
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Waist to Hip Ratio Calculator
Calculate your waist-to-hip ratio (WHR) and instantly see your WHO cardiovascular risk level (low, moderate, high, very high), body shape (apple/pear/hourglass), and personalised health recommendations. Supports metric (cm) and US (inches) units.
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Waist to Height Ratio Calculator
Calculate your waist-to-height ratio (WHtR) and instantly see your central obesity risk level (healthy, increased, or high risk) based on the Ashwell & Gibson thresholds. Supports metric (cm) and US (inches) units. Optionally enter your age for an age-adjusted interpretation.
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Body Surface Area Calculator
Calculate your body surface area (BSA) using five validated medical formulas — DuBois, Mosteller, Haycock, Gehan-George, and Boyd. BSA is used for drug dosing, burn area estimation, and clinical assessments. Supports metric (kg/cm) and US (lbs/ft/in) units.
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VO2 Max Calculator
Estimate your VO2 max (maximum oxygen uptake) using four validated test methods — Cooper 12-minute run, Rockport 1-mile walk, Åstrand-Ryhming cycle ergometer, resting heart rate, and a no-test non-exercise estimation. Get your fitness classification, percentile rank, five training zones, and personalised improvement tips.
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Target Heart Rate Calculator
Calculate your target heart rate zones for exercise using the Karvonen (Heart Rate Reserve) or percentage of max HR method. Get your maximum heart rate, all 5 training zones with exact bpm ranges, a custom target HR for any intensity, resting HR classification, and science-backed tips for smarter training.
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Maximum Heart Rate Calculator
Calculate your maximum heart rate using 6 science-validated formulas (Tanaka, Fox 220−age, Gulati, Gelish, Fairbarn, Nes). Get a formula comparison table, 5 colour-coded training zones, age-decade benchmarks, and personalised training tips. Supports male & female with gender-specific recommendations.
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Running Speed Calculator
Calculate your running speed in km/h and mph from distance and time, or find how far you ran in a set time, or how long it takes to cover a distance at a given speed. Get your equivalent pace per km/mile, race projections for 5K, 10K, half-marathon and marathon, and your speed zone classification.
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Running Distance Calculator
Calculate how far you ran from pace and time, predict finish time for a target distance, or find the pace required to cover a distance in a set time. Get per-kilometre or per-mile splits, race distance comparisons, calorie estimate, and weekly mileage recommendations.
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Marathon Pace Calculator
Calculate the pace needed to achieve your marathon goal time, project your finish time from a target pace, or analyse an actual race result. Supports 5K, 10K, half marathon, and full marathon. Get training paces for every workout type, split tables, equivalent race projections, and personalised race-day tips.
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🏃♂️Fitness & Health
Half Marathon Pace Calculator
Calculate the exact pace required to finish your half marathon (21.1 km / 13.1 miles) in a goal time, project your finish time from a target pace, or analyse an actual race result. Get 6 personalised training paces, km and mile split tables, equivalent projections for 5K to marathon, calorie estimate, performance level, and half-marathon specific race-day tips.
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Cycling Calorie Calculator
Estimate calories burned while cycling using ride duration, body weight, ride style, terrain, and optional distance. Review calorie burn, calories per hour, average speed, pace, and practical hydration and fueling notes.
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Swimming Calorie Calculator
Estimate calories burned while swimming using body weight, session duration, stroke type, water setting, and optional distance. Review calories burned, calories per hour, pace, and practical hydration and recovery notes.
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Jump Rope Calorie Calculator
Estimate calories burned while skipping rope using body weight, workout duration, jump style, rope type, and optional jump cadence. Review calories burned, calories per hour, total jumps, and practical workload notes.
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HIIT Calorie Calculator
Estimate calories burned during a HIIT workout using body weight, work and rest intervals, rounds, workout style, and optional warm-up and cool-down time. Review total calories, active calories, recovery calories, and session density.
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Workout Calorie Calculator
Estimate calories burned during a workout using body weight, workout duration, workout type, intensity, and optional warm-up and cool-down time. Review total calories, active calories, calories per hour, and MET-based session demand.
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Format, validate, minify, or sort JSON data with configurable indentation. Instantly check for syntax errors, view node count and nesting depth — free, no sign-up required.
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QR Code Generator
Generate QR codes for URLs, text, Wi-Fi credentials, vCards, and more. Customise foreground and background colour, error correction level, margin, and download as SVG or PNG — free and instant.
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Anxiety Test
Screen for anxiety symptoms with a GAD-7 style 7-question self-assessment. Get an anxiety severity score, interpretation, and practical next steps. Not a medical diagnosis.
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Burnout Test
Assess burnout risk with a 12-question self-assessment covering exhaustion, detachment, and overload. Get a burnout risk level, domain breakdown, and practical next steps. Not a medical diagnosis.
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