BMI & TDEE Calculator
Body mass index, healthy weight range, BMR and daily calorie needs — computed locally
Examples
Standard adult check
Male · 30 y · 175 cm · 75 kg · moderate activityBMI 24.5 (normal, top edge) · Healthy range 56.7–76.3 kg · TDEE ≈ 2,600 kcalThe healthy-weight window is often more actionable than the index itself.
About this tool
Two standard estimates from one set of inputs: BMI (weight ÷ height²) placed on the WHO adult classification scale with a marker and a healthy-weight window for your height, and daily calorie needs via Mifflin-St Jeor BMR multiplied by an activity factor.
Both numbers are screening estimates, not diagnoses — the tool caps input at ages 15–100 (children use percentile charts) and prints a medical disclaimer with every result.
How to use
Enter your stats
Sex, age, height and weight — metric or imperial; the math stays metric underneath.
Pick activity
Choose the description that matches a typical week, from sedentary to athlete.
Read the results
BMI band with marker, healthy weight range, BMR, TDEE and cut/bulk calorie targets.
Copy
The summary includes the disclaimer automatically when you share it.
Use cases
Calorie baseline
Set a maintenance estimate before starting a cut or bulk phase.
Health screening
Check where weight sits relative to the WHO bands and the healthy range for your height.
Common mistakes
Mistake:Reading BMI as body composition
Fix:BMI cannot tell muscle from fat; lifters often classify overweight while lean. Use it as a rough screen.
Mistake:Treating TDEE as exact
Fix:Even lab estimates carry ±10%; adjust against real weight trends over weeks.
Frequently asked questions
References & standards
Related tools
Ambient Noise Generator
Blend white, pink and brown noise live in your browser — focus masking, tinnitus relief and sleep, with a built-in sleep timer.
Pomodoro Focus Timer
Classic 25/5 Pomodoro cycles with configurable lengths, sound alerts and optional notifications — accurate even in background tabs.
Typing Speed Test
Measure your typing speed in WPM with live accuracy tracking on curated quotes — net and gross WPM, per-character feedback.