BMI Calculator & Weight Log

BMI calculator with ideal weight range, body fat, calories and weight tracker

BMI Calculator works out your body mass index in seconds. Enter your height, weight, age and sex, and you immediately see your BMI number, the weight category it falls into, and the healthy weight range for your height.

WHAT YOU GET
• A BMI calculator that updates the moment you type — no waiting, no sign-up
• A colored gauge showing where you sit: underweight, healthy weight, overweight or obese
• Your healthy weight range worked out for your exact height
• How many pounds or kilos separate you from that range
• Metric and imperial units — BMI calculator in kg and cm, or lb and feet and inches
• A history list and trend chart so you can follow your body mass index over weeks
• Everything runs offline on your device, with no account to create

WHO USES IT
Men and women checking their BMI after a change in routine. Runners and gym-goers who track body fat alongside weight. Parents looking at BMI for a teen or a child, with the reminder that growing children are read on age-and-sex percentile charts by a doctor, not on the adult BMI scale. Anyone who simply wants an honest number instead of a guess.

READING YOUR RESULT
The BMI formula divides weight by height squared. The World Health Organization reads the result on this scale for adults: below 18.5 is underweight, 18.5 to 24.9 is the healthy range, 25 to 29.9 is overweight, and 30 and above falls into obesity. The built-in BMI chart shows those bands at a glance so the meaning of your number is clear without looking anything up.

BMI has real limits, and the app says so plainly. It does not know the difference between muscle and fat, so a very muscular person can land in the overweight band while being perfectly healthy. It is a screening indicator, not a verdict.

BMI — PRO SUBSCRIPTION
• Body fat percentage estimate
• Daily calorie needs and BMR, your basal metabolic rate
• Unlimited measurement history
• No more ads

PRIVACY
Your height, weight and history stay on your phone. There is no account, no cloud sync and no profile to fill in. Uninstall the app and the data goes with it.

MEDICAL DISCLAIMER
This app is an informational tool. BMI is a screening indicator, not a medical diagnosis, and nothing here replaces a consultation. Talk to a doctor or a registered dietitian before making decisions about your weight, your diet or your health, especially if you are pregnant, under 18, or living with a medical condition.

BODY FAT CALCULATOR AND CALORIE FIGURES
The body fat calculator estimates body fat percentage from your BMI, age and sex using the Deurenberg formula, and the app labels it an estimate because that is what it is — no scale, no caliper, no scan. Alongside it you get your basal metabolic rate and maintenance calories from Mifflin-St Jeor. Reference figures to look at, not instructions to follow.

PRO SUBSCRIPTION
The core tools stay available without paying. Pro starts with a 7-day free trial, and ads keep showing during that trial. After it ends, the weekly subscription renews automatically and removes the ads. Cancel any time in Google Play.

If you already bought the Pro version, it stays yours for life, with no subscription.