BMI Calculator: Weight Tracker

BMI Calculator helps you understand your health, monitor your progress, and stay on track with your goals using a simple weight loss tracker.

🧮 CALCULATE YOUR BMI IN SECONDS
See your Body Mass Index update live as you adjust height and weight. Get a clear category, a color-coded BMI chart, your healthy weight range, and exactly how far you are from it. Choose WHO international or WHO Asian (WPRO) cutoffs.

📈 WEIGHT TRACKER WITH A SMART TREND
Every calculation is saved to your weight log automatically. The weight chart smooths out daily ups and downs so you can see your real direction, and a plain sentence sums it up: how much you are down, and since when. Missed a day? Log a weigh-in for any past date, and edit any entry later.

🎯 REACH YOUR IDEAL WEIGHT
Set a goal weight and follow your progress with a projected date. See your ideal weight (Devine formula), the calories you need to maintain or change weight (BMR and TDEE), and a steady pace for your goal — without extreme targets.

👨‍👩‍👧 FAMILY PROFILES
One app for the whole household. Each person keeps their own weight history, units and goal — switch between profiles in one tap.

📏 MORE THAN A BMI CALCULATOR
• Body fat calculator (US Navy tape method) with guidance on where to measure
• Waist-to-height and waist-to-hip ratios
• BMR & TDEE daily calorie needs, BMI Prime, Ponderal Index
Every extra measurement is optional — leave anything blank and the app simply works without it.

⚖️ YOUR UNITS, YOUR WAY
Weight in kilograms, pounds, or UK stone & pounds. Height in centimeters or feet & inches — including feet with kilograms.

🔒 PRIVATE BY DESIGN
Your measurements are stored locally on your phone. No analytics, no trackers, no account. Export a PDF report to take to a doctor visit, back up your weight diary to a JSON or CSV file, and restore it on a new phone any time. Optional weigh-in reminders are local and off by default.

Permissions: notifications — only if you turn reminders on. That is all.

For adults 18 and over. This app is not a medical device and does not diagnose, treat, cure, or prevent any medical condition. BMI is a screening tool — always consult a healthcare professional for medical advice, diagnosis, or treatment.

Recent changes:
A complete rebuild. The calculator now remembers.

• Every result is saved — watch your weight trend over time
• Set a goal weight and see your progress
• Separate profiles for the whole family
• kg, lb, stone & pounds, or feet with kg
• Body fat, waist ratios, BMR and daily calories
• PDF report to take to your doctor
• Back up and restore your history
• Optional weigh-in reminders

Works offline. No account needed.