Health & daily life: simple tools, guides and references
Use simple references to better understand daily habits. The content is informational and never replaces medical advice.
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Tools & Calculators
Use the tools linked to this category right away.
Dog & cat kibble ration calculator
Calculate your dog or cat’s daily kibble portion based on weight, age, neutering, activity, body condition and mix-feeding. Free estimate, no sign-up.
mg ↔ mL Converter
Convert mg to mL (and back) from a concentration. Compute pediatric weight-based dose, handles syrups, suspensions and injectable solutions. A handy guide for nursing students and parents.
BMI & ideal weight calculator
Compute your BMI in 10 seconds and find your target ideal weight through 3 medical formulas (Lorentz, Creff, Devine). Bonus: body age and clear target.
Sleep tracker
Log your nights in one click, calculate your cycles, track your 7-day sleep debt and your naps. No sign-up, no sensor: everything stays on your device.
Ideal weight
Calculate your target weight in 10 seconds. The simulator combines the 3 reference medical formulas — Lorentz, Creff and Devine — and shows the average for a realistic health goal.
All tools
6 tools
Guides & Tutorials
Understand the basics before taking action.
Does Lack of Sleep Make You Gain Weight? The Science Explained
Discover the proven link between sleep deprivation and weight gain. Learn how poor sleep disrupts your hormones, increases appetite, and how tracking your sleep can help you take back control.
How to Track Your Sleep Easily (and Actually Improve It)
Discover why tracking your sleep daily changes everything, how to do it in seconds, and how to spot sleep debt before it impacts your energy and health.
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Practical questions
Find a short answer to common questions.