Health & Fitness
11 toolsAge Calculator — Years, Months & Days
Free age calculator. Calculate exact age in years, months, days, total hours. Zodiac sign, day of week born, days until next birthday — 100% client-side. 100% serverless.
BMI Calculator — Body Mass Index
Free, private BMI calculator. Calculate your Body Mass Index with metric or imperial units. Visual BMI scale, category classification, healthy weight range — 100% client-side. 100% serverless.
Body Fat Calculator — Free US Navy Method Tool
Free body fat percentage calculator using the US Navy method. Enter height, waist, neck, hip measurements. Category classification included. 100% client-side. 100% serverless.
Calorie Calculator — Free TDEE & BMR Calculator
Free calorie calculator. Find your TDEE, BMR, and daily calories for weight loss, maintenance, or gain. Macro breakdown included. 100% client-side. 100% serverless.
Habit Tracker — Free Online Daily Habit Tracker with Streaks
Free, private, serverless habit tracker. Track daily habits with streaks, calendar heatmap, statistics, and export — 100% client-side.
Heart Rate Zone Calculator — Free Karvonen Training Zones
Free heart rate zone calculator using Karvonen method. Find your 5 training zones with max HR and resting HR. 100% client-side. 100% serverless.
Ideal Weight Calculator — Free Multiple Formula Tool
Free ideal weight calculator using 4 formulas (Devine, Robinson, Miller, Hamwi) with BMI-based healthy range. 100% client-side. 100% serverless.
Macro Calculator — Protein, Carbs & Fat Calculator
Free macro calculator. Calculate daily protein, carbs, and fat based on calories and goals — 100% client-side. 100% serverless.
Pace Calculator — Running & Cycling Speed Tool
Free pace calculator for running and cycling. Calculate pace, time, or distance with km/mi conversions — 100% client-side. 100% serverless.
Sleep Cycle Calculator — Optimal Sleep & Wake Times
Free sleep cycle calculator based on 90-minute cycles. Find the best bedtime or wake-up time — 100% client-side. 100% serverless.
Water Intake Calculator — Daily Hydration
Free water intake calculator. Calculate daily hydration based on weight, age, activity, and climate. Shows liters, glasses, fluid ounces — 100% client-side. 100% serverless.
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