Health
Explore free health calculators for BMI, calories, sleep, hydration, and training zones. Use them for awareness and planning conversations — not diagnosis.
Informational only. Not medical advice. Do not use these calculators to diagnose disease or decide on medication.
Wellness & body metrics
Wellness & body metrics
3 picks
12 shown
Calculate body mass index from height and weight.
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Estimate daily calorie needs from age, sex, and activity.
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Estimate a daily water intake target from body weight.
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Estimate an ideal weight range using common formulas.
OpenEstimate body-fat percentage from simple body measurements.
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Find wake or bedtime suggestions based on sleep cycles.
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Estimate basal metabolic rate with the Mifflin-St Jeor equation.
OpenEstimate total daily energy expenditure from BMR and activity.
OpenSplit calories into protein, carbs, and fat targets.
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Estimate max heart rate and training zones from age.
OpenConvert daily steps into an approximate calorie burn.
OpenEstimate calories burned while running by distance and weight.
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HealthSleep is not a straight eight-hour bar. A 90-minute cycle is why waking at 7.5 hours can feel clearer than an eight-hour alarm that lands mid-cycle.
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No. They are informational estimators based on common formulas. They do not diagnose conditions or replace professional care.
BMI and calorie tools are good starting points. Sleep and water intake are useful for everyday planning habits.
These tools run in your browser for calculation. Avoid entering sensitive medical records into any public website.
Formulas, rounding, activity multipliers, and unit assumptions vary. Compare methods, not just final numbers.
Health numbers are easier to understand when you can change inputs and see what happens. Utila’s health tools turn common formulas into clear, browser-based calculators you can use without creating an account.
Start with BMI or ideal weight if you want a high-level body-composition estimate. Move to BMR, TDEE, and macros when you are planning nutrition targets. Sleep and heart-rate tools help you think about recovery and training intensity in practical terms.
Every result is an estimate based on published equations and the values you enter. Age, muscle mass, medical conditions, pregnancy, and other factors can change how useful a number is. Treat outputs as education — not a diagnosis, prescription, or treatment plan.
For the best experience, double-check units (kg vs lb, cm vs in), keep a short note of your inputs, and revisit tools over time instead of reacting to a single reading. When decisions matter, bring your questions to a qualified clinician.
Related tools across Lifestyle and Math can help with unit conversion and daily planning. Browse the featured and popular sections above to find a starting point quickly.
Utila organizes health utilities as a CollectionPage: featured picks, popular tools, recently added items, related blogs, and related news. That structure helps both first-time visitors and returning users find a next step without bouncing to a search engine mid-task.
International visitors can switch language from the site chrome while keeping the same tool URLs under their locale prefix. Core formulas stay consistent; labels and navigation follow the active locale. Mobile layouts keep cards single-column where needed, with large tap targets for primary actions.
Internal links matter for discovery. Each category page points to top tools, editorial explainers, and neighboring categories. Each tool page points back here plus related utilities. Blogs and news summarize topics in original language—never scraped full articles—so the site stays suitable for advertising review while remaining useful.
Performance stays intentional: lightweight client components, server-rendered category shells, and no fake counters. Premium (₹299/month) unlocks extra editorial and puzzle content; it does not invent income claims or hide basic calculators. When you are ready to go deeper, open a featured tool above or continue through the related sections below.