Final Comparison: Five Health Calculators and Their Benefits 🔍 Final Comparison: Five Health Calculators and Their Benefits Tool Name Purpose / What It Measures Main Inputs Required Output / What The User Gets Key Health Benefits Sleep Cycle Calculator Calculates the optimal bedtime or wake-up time based on natural 90-minute sleep cycles Preferred wake-up time (or bedtime) ; average time to fall asleep Suggested bed/wake time aligned to end of a light sleep cycle Wakes user at lighter sleep stages → less grogginess, better energy and mood Hydration Water Intake Calculator Determines the ideal daily water intake Weight, gender, activity level, climate Personalized recommendation in liters or ounces of water per day Prevents dehydration, improves skin, energy, digestion and mental performance Life Expectancy Lost to Junk Food Calculator Estimates how much life expectancy is reduced due to unhealthy food consumption Type of junk food, frequency, quantity ...
Body Fat Percentage Calculator
Your Body Fat Percentage:
-%
Category:
Body Fat Categories
| Category | Men | Women |
|---|---|---|
| Essential Fat | 2-5% | 10-13% |
| Athlete | 6-13% | 14-20% |
| Fitness | 14-17% | 21-24% |
| Average | 18-24% | 25-31% |
| Obese | 25%+ | 32%+ |
Body Fat Calculator FAQs
How accurate is this calculator?
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The calculator provides estimates using established formulas. While generally accurate (±3-5%), individual results may vary. For professional assessments, consult a healthcare provider.
Which measurement method is best?
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The U.S. Navy method is most accurate for home use. Skinfold method requires calipers and proper technique. BMI method is simplest but least accurate.
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