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Health & Fitness Calculators
BMI, calorie intake, body fat, pregnancy due date, and other health calculators with metric units.
BMI Calculator
Calculate your Body Mass Index and see which weight category you fall into.
Open calculatorDaily Energy (TDEE) Calculator
Calculate your Total Daily Energy Expenditure and Basal Metabolic Rate based on activity level.
Open calculatorCalorie Intake Calculator
Calculate your daily calorie and macronutrient targets for weight loss, maintenance, or muscle gain.
Open calculatorPregnancy Due Date Calculator
Calculate your estimated due date, current week, and trimester from your last menstrual period or conception date.
Open calculatorBody Fat Percentage Calculator
Estimate your body fat percentage using the US Navy method with simple body measurements.
Open calculatorIdeal Weight Calculator
Calculate your ideal weight range using multiple established formulas based on height, gender, and frame size.
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Articles & guides
What BMI Actually Tells You (And What It Gets Completely Wrong)
BMI is the most widely used health measurement in the world — but it was invented by a mathematician in the 1800s and was never designed to assess individual health. Here's what the number actually means, where it fails, and what to use alongside it.
6 · Read moreCalorie Counting for Australians: Does It Work, and How to Do It Without Losing Your Mind
Calorie counting is one of the most evidence-based approaches to weight management — but most Australians do it badly or abandon it within a week. Here's what the research says, how to get started properly, and how to make it sustainable.
6 · Read moreBlood Alcohol Content Explained: How BAC Works and Why It Matters
Understanding how alcohol affects your blood alcohol content can be the difference between a safe night out and a serious mistake. Here's the science, the legal limits, and what actually influences your BAC.
6 · Read morePregnancy Due Date: How It's Calculated and What to Expect Week by Week
Your due date is one of the first numbers that defines your pregnancy journey — but most people don't know how it's calculated or how accurate it really is. Here's everything you need to know.
7 · Read moreFor anyone serious about body composition, the PROIRON Resistance Bands Set of 5 ($18.99, 4.4★ from 1.1K reviews) is worth a look. Affiliate link
