FormIndex: BMI & Weight Tool helps you understand your body in a few taps. Enter your height, weight and age to get your Body Mass Index, see where it falls on a clear colour gauge, and find the healthy weight range for your height.
BMI CALCULATOR
- Instant BMI result with a colour gauge and category
- Healthy weight range for your height
- How much to gain or lose to reach the healthy range
- Suggested daily water intake
- Calories your body burns at rest
- Works in metric (kg, cm) or imperial (lb, ft, in)
BODY TOOLS
- Body fat estimate – uses the U.S. Navy tape method with neck, waist and hip measurements, and shows fat mass and lean mass
- Daily calories – find how many calories you need to keep, lose or gain weight, based on your activity level
- Ideal weight – compare four well-known formulas (Devine, Robinson, Miller and Hamwi) side by side
- Waist to height ratio – a simple check of where your weight sits
WEIGHT LOG
- Save your results or add your weight on any date
- Smooth trend chart of your weight over time
- Set a goal weight and follow your progress
- See your lowest, highest and average weight
- Swipe to delete an entry, with undo
BMI GUIDE
Learn what BMI measures, what it doesn't show, and when it's a good idea to talk to a doctor.
SIMPLE AND PRIVATE
- No sign-up and no account needed
- Works fully offline
- All your data stays on your device
- No special permissions
- Clear your log or reset all data at any time
Whether you're starting a fitness journey, keeping an eye on your weight or just curious about your numbers, FormIndex gives you clear results in a clean, easy design.
Please note: FormIndex is for general information only. It is not a medical device and does not diagnose or treat any condition. BMI and other results are estimates and are meant for adults. Always talk to a qualified doctor before making decisions about your health, diet or exercise.
Check your BMI, body fat, daily calories and ideal weight. Track your progress.