25+ free tools for BMI, calories, body fat, hydration & fitness goals — designed for everyone. No signup, instant results, always 100% free.
Calculate your Body Mass Index (BMI) for adults and children. Know if you are underweight, normal, overweight or obese based on WHO standards.
Estimate body fat percentage using the US Navy tape measurement method. Works for both men and women — no gym equipment needed.
Find your ideal body weight using 4 proven medical formulas — Hamwi, Devine, Robinson and Miller. Average shown with healthy range.
Calculate waist-to-hip ratio (WHR) to assess risk of heart disease, diabetes and obesity-related conditions. Full WHO risk scale included.
Determine if your body frame is small, medium or large using wrist circumference and height. Helps set more accurate ideal weight targets.
Calculate lean body mass (LBM) — the total weight of everything except fat. Essential for protein targets, medication dosing and fitness planning.
Enter your systolic and diastolic readings to check blood pressure stage — Normal, Elevated, High Stage 1 or 2 — as per AHA 2017 guidelines.
Calculate Basal Metabolic Rate (BMR) — calories your body burns at complete rest — using Mifflin-St Jeor, Harris-Benedict and Katch-McArdle formulas.
Total Daily Energy Expenditure — your full daily calorie burn including activity. The foundation of every effective diet and fitness plan.
Get a personalised daily calorie target for weight loss, maintenance or muscle gain. Includes full macro breakdown for protein, carbs and fat.
Calculate daily protein requirement based on weight, activity level, age and fitness goal — muscle gain, fat loss, or maintenance.
Calculate optimal daily water intake based on body weight, climate and physical activity. Stay perfectly hydrated throughout every day.
Get precise macronutrient targets — grams of protein, carbohydrates and fat — tailored to your calorie goal and body composition needs.
Calculate calories burned during 50+ activities — running, cycling, swimming, yoga, strength training and more. Based on standard MET values.
Find your maximum heart rate and all 5 training zones — from light aerobic to VO2 max. Essential for effective and safe cardio training.
Estimate your VO2 max — the gold standard for cardiovascular fitness — using resting heart rate and Cooper test methods. Age & gender norms shown.
Calculate your 1RM (one-rep max) for any lift using Epley, Brzycki and Lander formulas. Get full percentage-based training load table.
Calculate pace, distance and finish time for any run — 5K, 10K, half marathon or full marathon. Supports km and miles both.
Convert step count to distance (km/miles) and calories burned. Personalise with your height for accurate stride length calculation.
Calculate the best bedtime or wake-up time based on 90-minute sleep cycles. Wake up refreshed — not groggy mid-cycle.
Estimate your biological age using lifestyle factors — sleep, diet, exercise, stress and habits. Compare your bio age to your real age.
Assess your stress level using validated questions based on the PSS (Perceived Stress Scale). Get a score and personalised coping tips.
Calculate your daily dietary fibre requirement based on age, gender and calorie intake. Important for digestive health and cholesterol control.
Calculate estimated due date (EDD) using last menstrual period (LMP) or conception date. Includes trimester milestone dates.
Predict your fertile window and most likely ovulation day based on last period and cycle length. Plan or avoid pregnancy naturally.
Get recommended total weight gain range during pregnancy based on pre-pregnancy BMI — IOM guidelines for single and twin pregnancies.
Predict your next 6 period dates based on last period and average cycle length. Completely private — no app download required.