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Health calculators that are actually beautiful
Instant, accurate answers about your calories, BMI, hydration, and ideal weight — with interactive charts, milestone forecasts, and zero clutter.
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Peer-reviewed formulas
Every calculation uses published, citable science — Mifflin–St Jeor, WHO BMI ranges, EFSA hydration guidance, and four ideal-weight equations.
Interactive forecasts
Not just a number. See week-by-week weight loss timelines, milestone dates, and animated visual scales that make results instantly clear.
Private by design
Everything runs in your browser. Your weight, height, and goals are never sent to a server or stored anywhere.
Latest from the blog
View all →Weight Loss
How Many Calories Should I Eat to Lose Weight?
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Nutrition
What Is a Healthy BMI? Understanding the Numbers
What BMI actually measures, where the healthy range comes from, and when the number can mislead you.
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Hydration
How Much Water Should You Drink Daily?
Forget the 8-glasses rule. Here's how to calculate your real daily water needs based on your body, activity, and climate.
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Weight Loss
How Long Does It Take to Lose 50 Pounds?
Realistic timelines for losing 50 lbs safely, what affects your rate of loss, and how to map your own milestone schedule.
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