Loading…
BMI, calorie, fitness, and wellness calculators. All calculators are free, instant, and require no signup.
37 available
Calculate your Body Mass Index using both the standard WHO scale (25 / 30 cutoffs) and the WHO Asia-Pacific revised scale (23 / 25 cutoffs) used by ICMR for South-Asian body composition. Supports metric and imperial units.
Calculate pregnancy due date using Naegele's rule (LMP + 280 days), conception date, or ultrasound dating. Shows current week, trimester boundaries, and all key milestone dates — first heartbeat, anatomy scan, viability, full-term.
Find your most likely ovulation date and 6-day fertile window based on LMP and cycle length. Shows next 3 cycles with conception-best days highlighted. Pairs with Period and Pregnancy Due Date calculators.
Predict your next 6 menstrual periods with start dates, fertile windows, ovulation dates, and PMS windows side-by-side. Customisable cycle length and period duration; tracks cycle regularity.
Calculate Total Daily Energy Expenditure (TDEE) using Mifflin-St Jeor BMR × activity factor. Returns calorie targets for cutting / maintenance / bulking + macro split for vegetarian and non-vegetarian Indian diets.
Calculate daily calorie needs (TDEE) based on age, weight, height, and activity level.
Estimate body fat percentage from tape measurements using the circumference (US Navy) method, in metric (cm/kg) or imperial. Includes goal-weight projection.
Calculate Basal Metabolic Rate — the calories your body burns at complete rest.
Calculate ideal daily protein, carbohydrates, and fat intake for your goals.
Calculate your ideal body weight based on height using multiple formulas.
Calculate BMI for children and teens ages 2-19 using IAP (Indian Academy of Pediatrics) 2015 growth charts, with CDC charts as an option.
Calculate calories burned during exercise based on activity type, weight, and duration.
Calculate your target heart rate zones for maximum fat burn and cardio fitness.
Calculate daily protein intake based on weight, activity level, and fitness goals.
Estimate Blood Alcohol Content (BAC) based on drinks consumed, weight, and time.
Calculate running pace, finish time, and distance for any running event.
Calculate the best times to wake up or go to sleep based on sleep cycles.
Calculate how much water you should drink daily based on weight, activity level, and climate.
Calculate lean body mass and fat mass using the Boer, James, and Hume formulas.
Calculate your one rep max for any lift using Epley, Brzycki, Lander, and other formulas.
Calculate your waist-to-hip ratio and assess cardiovascular risk according to WHO guidelines.
Calculate how long you have been sober in years, months, days, and hours from your sobriety date.
Calculate recommended weight gain during pregnancy based on pre-pregnancy BMI and guidelines.
Calculate your baby's estimated due date, trimester milestones, and key pregnancy dates.
Estimate conception date from due date, or calculate due date from conception date.
Calculate your daily carbohydrate needs based on calorie goals, activity level, and diet type.
Calculate daily fat intake recommendations based on calorie goals and health objectives.
Calculate body surface area (BSA) using DuBois, Mosteller, and Haycock formulas.
Determine your body type (ectomorph, mesomorph, endomorph) based on measurements.
Estimate Glomerular Filtration Rate (eGFR) to assess kidney function using CKD-EPI formula.
Predict a child's adult height using the mid-parental height formula based on parents' heights.
Calculate your personalized keto diet macros — net carbs, protein, and fat — based on your TDEE, weight goal, and ketogenic ratio.
Calculate exactly how long it will take to reach your goal weight at a given calorie deficit, with realistic timeline and daily calorie target.
Find the right intermittent fasting schedule for your goals (16:8, 18:6, 20:4, OMAD, 5:2) and calculate fasting/eating windows with calorie targets.
Convert HbA1c percentage to estimated Average Glucose (eAG) and check your diabetes risk category — normal, prediabetes, or diabetes range.
Calculate your goal marathon pace per mile/km, mile-by-mile splits, and predict 5K/10K/half marathon times from any pace or finish target.
Calculate your 5 heart rate training zones (recovery, fat burn, aerobic, anaerobic, max) using max-HR and Karvonen formulas based on age, resting HR, and fitness level.
Health numbers only mean something when they fit the person reading them. Our health calculators are tuned for Indian users — for example, the BMI calculator flags the Asian-Indian risk thresholds (overweight at a BMI of 23 rather than 25), because research shows South Asians carry higher metabolic risk at lower body weights than Western populations. The aim is honest, context-aware guidance rather than one-size-fits-all numbers.
From everyday wellness to fitness planning, this category covers the essentials: BMI and ideal body weight, daily calorie needs (BMR and TDEE), body fat percentage, protein and water intake, pregnancy due dates, and pace and calorie tools for runners and gym-goers. Each calculator explains what the result means, what range is considered healthy, and what you can do about it — so a number becomes something you can act on, not just a figure on a screen.
All health calculators are free, mobile-friendly, and private — your height, weight, age, and other inputs never leave your device. They are educational tools meant to help you understand your body and track progress over time, not to diagnose or treat any condition. For anything that concerns you, or before making big changes to diet, exercise, or medication, please consult a qualified doctor or registered dietitian.