BMI Calculator
Body Mass Index with WHO categories and your healthy weight range.
Use tool →Health Tools 15
BMI, calories, heart rate and body calculators. Every tool below is free, needs no sign-up, and runs entirely in your browser — your data never leaves your device.
BMR Calculator
Basal metabolic rate via Mifflin-St Jeor plus a TDEE activity table.
Use tool →Ideal Weight Calculator
Devine-formula target weight alongside the healthy BMI band.
Use tool →Body Fat Calculator
US Navy tape method plus BMI-based estimate, with ACE categories.
Use tool →Fat-Burning Heart Rate
Training zones by age with Tanaka max HR and Karvonen correction.
Use tool →Protein Intake Calculator
Daily protein range by weight, activity level and goal.
Use tool →Energy Converter
Convert joules, calories, watt hours and BTU with exact factors.
Use tool →Running Calorie Calculator
Calories burned from distance, pace and weight via the MET method.
Use tool →Physical Fitness Test
Self-score fitness 0–100 from BMI, heart rate, exercise and sleep.
Use tool →Best Figure Calculator
Classic body ratio targets by height plus your WHO-risk WHR.
Use tool →Safe Period Calculator
Calendar-method period, ovulation and fertile window dates.
Use tool →Child Height Predictor
Genetic height target from parents’ heights (Tanner formula).
Use tool →Blood Type Calculator
Possible child ABO and Rh types from the parents’ types.
Use tool →Color Blindness Test
Quick original 4-plate red-green color vision check.
Use tool →Vegetable Oil Comparison
Ten cooking oils by fat composition and smoke point.
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Life
Age, loans, sizes and everyday lookups
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QR codes, barcodes, passwords and random data
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Encoders, formatters, hashes, ciphers and port checks
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Units, geometry and number converters
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Case converters, symbols and text utilities
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Resize, compress, crop and convert — all local
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Lucky wheels, pickers and novelty tools
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