BMI & Body Fat Calculator
Silicon Bytes Studio
Calculate your BMI from your height and weight in seconds, see what it means for you, and track your weight over time. This BMI calculator also gives you your body fat percentage, ideal weight, BMR, TDEE, calories and macros: 26 health calculators in one app.
This app is not a medical device and does not diagnose, treat, cure, or prevent any medical condition. Talk to a healthcare professional about your results.
BMI calculator for your body type
The same BMI can carry different health risk in different populations. Choose the standard that fits you: WHO (Western), South Asian, East Asian, Southeast Asian, Black African, or Arab and Middle Eastern. Your WHO reading is always shown alongside, with a short note on why they differ.
Weight tracker with charts
Use the weight tracker to log your weight, waist and body fat and see your trend by month, 3 months, year or all time. See how much you have lost or gained and how your BMI has changed. Keep separate profiles for everyone at home, and export your history as CSV or PDF for your doctor or coach.
BMI chart: body mass index ranges for adults (WHO)
The BMI calculator places your result on this chart:
• Underweight: BMI below 18.5
• Normal weight: BMI 18.5 to 24.9
• Overweight: BMI 25 to 29.9
• Obesity: BMI 30 or above
For South Asian, East Asian and Southeast Asian adults, WHO expert guidance uses lower cut-offs: overweight from a BMI of 23 and obesity from a BMI of 27.5.
How BMI is calculated
BMI is your weight in kilograms divided by your height in metres squared. In pounds and inches, BMI is 703 times your weight divided by your height squared. The app does the maths for you and shows the result on a dial, next to your healthy weight range.
Body calculators
• BMI calculator for women and men, with a healthy weight range for your height
• Asian BMI calculator: South Asian, East Asian and Southeast Asian cut-offs
• BMI for kids and teens, using CDC growth percentiles
• Body fat percentage calculator (US Navy tape method) and relative fat mass (RFM)
• Ideal weight calculator: a range from four published formulas
• FFMI calculator (fat-free mass index), waist-to-height and waist-to-hip ratio
• Body surface area and body proportions
Calorie calculator, BMR and TDEE
• BMR calculator (Mifflin-St Jeor and Katch-McArdle)
• TDEE calculator: the calories you burn each day
• Calorie target for weight loss or gain, with safety limits
• Calories burned by activity
• Macro calculator, protein intake and daily water
Fitness calculators
• One rep max calculator (1RM)
• Max heart rate and heart rate zones
• VO2 max estimate
• Running pace and race time predictor
Pregnancy mode
During pregnancy, BMI categories are replaced with weight gain guidance based on your pre-pregnancy BMI.
Clear and honest
Every result is shown on a dial or chart and explained in plain words. Each formula lists its published source, and estimates show their margin of error.
Your measurements stay private
No account and no sign-up. Works offline. Your weight and body measurements are never used for ads or analytics. Android's own backup can carry them to your new phone, and you can delete everything at any time.
Units: kg, lb or stone; cm or feet and inches.
Questions or ideas? Email asadullahsansi@gmail.com
This app is not a medical device and does not diagnose, treat, cure, or prevent any medical condition. Talk to a healthcare professional about your results.
BMI calculator for your body type
The same BMI can carry different health risk in different populations. Choose the standard that fits you: WHO (Western), South Asian, East Asian, Southeast Asian, Black African, or Arab and Middle Eastern. Your WHO reading is always shown alongside, with a short note on why they differ.
Weight tracker with charts
Use the weight tracker to log your weight, waist and body fat and see your trend by month, 3 months, year or all time. See how much you have lost or gained and how your BMI has changed. Keep separate profiles for everyone at home, and export your history as CSV or PDF for your doctor or coach.
BMI chart: body mass index ranges for adults (WHO)
The BMI calculator places your result on this chart:
• Underweight: BMI below 18.5
• Normal weight: BMI 18.5 to 24.9
• Overweight: BMI 25 to 29.9
• Obesity: BMI 30 or above
For South Asian, East Asian and Southeast Asian adults, WHO expert guidance uses lower cut-offs: overweight from a BMI of 23 and obesity from a BMI of 27.5.
How BMI is calculated
BMI is your weight in kilograms divided by your height in metres squared. In pounds and inches, BMI is 703 times your weight divided by your height squared. The app does the maths for you and shows the result on a dial, next to your healthy weight range.
Body calculators
• BMI calculator for women and men, with a healthy weight range for your height
• Asian BMI calculator: South Asian, East Asian and Southeast Asian cut-offs
• BMI for kids and teens, using CDC growth percentiles
• Body fat percentage calculator (US Navy tape method) and relative fat mass (RFM)
• Ideal weight calculator: a range from four published formulas
• FFMI calculator (fat-free mass index), waist-to-height and waist-to-hip ratio
• Body surface area and body proportions
Calorie calculator, BMR and TDEE
• BMR calculator (Mifflin-St Jeor and Katch-McArdle)
• TDEE calculator: the calories you burn each day
• Calorie target for weight loss or gain, with safety limits
• Calories burned by activity
• Macro calculator, protein intake and daily water
Fitness calculators
• One rep max calculator (1RM)
• Max heart rate and heart rate zones
• VO2 max estimate
• Running pace and race time predictor
Pregnancy mode
During pregnancy, BMI categories are replaced with weight gain guidance based on your pre-pregnancy BMI.
Clear and honest
Every result is shown on a dial or chart and explained in plain words. Each formula lists its published source, and estimates show their margin of error.
Your measurements stay private
No account and no sign-up. Works offline. Your weight and body measurements are never used for ads or analytics. Android's own backup can carry them to your new phone, and you can delete everything at any time.
Units: kg, lb or stone; cm or feet and inches.
Questions or ideas? Email asadullahsansi@gmail.com
Developer email
asadullahsansi@gmail.com
Developer website
https://asadsansi.github.ioReleased
Oct 12, 2021
Current version
2.7.1
Android version
6.0
Screenshots
