Most keto calculators set protein too high — which triggers gluconeogenesis and kicks you out of ketosis. This MD-verified 2026 keto calculator gives you exact daily fat, protein and net carbs personalized for your weight, goal and activity level. Results in seconds, free.
MD-verified intermittent fasting calculator with personalized eating windows, sleep-overlap analysis, protocol comparison, and a full 7-day fasting schedule — updated March 2026.
BMI told millions of people they were healthy. Body fat testing told a different story. This free Navy Method calculator reveals your true body fat percentage in seconds — your health risk category, exact lean vs. fat mass, and the precise fat loss target doctors actually use. No gym equipment needed. Just a tape measure.
The government's 0.8g/kg protein RDA is the minimum to prevent malnutrition — not the amount you need to build muscle, lose fat or stay healthy as you age. Enter your weight, goal and activity level to get your personalized daily protein target, from sedentary maintenance (1.0g/kg) to serious athlete training (up to 2.7g/kg). Instant, science-backed, free.
The "8 glasses a day" rule is outdated — your real water needs depend on your weight, activity level and climate. This free calculator gives your exact daily target in seconds, explains why dehydration symptoms appear before you feel thirsty, and shows how hydration directly affects your energy, focus and metabolism.
Our vitamin deficiency calculator is a fast, privacy-first screening tool that helps you understand which vitamins might deserve attention based on your vitamin deficiency symptoms, diet pattern, sun exposure, and lifestyle/medical factors. If you were searching for a vitamin deficiency…