Why FitByAtal Exists
FitByAtal started as a simple idea: fitness tracking shouldn't require an app, a login, or a subscription. Just fast, accurate calculators and straightforward guides — free, for anyone who wants to understand their own numbers.
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Free Calculators
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In-depth Guides
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Signups Needed
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Healthy Lifestyle
Practical, sustainable advice over fads and quick fixes.
Free Calculators
Every tool on this site is free to use, with no signup required.
Helpful Guides
Clear, no-fluff articles written to actually answer your question.
How we make our calculators and guides
FitByAtal is written and maintained by Atal. Every calculator uses a published, widely accepted method: the Mifflin-St Jeor equation for BMR and calories, the US Navy circumference method for body fat, the Epley formula for one rep max and MET values for calories burned. Each tool page explains the formula it uses, its limits, and links to the guides that go deeper.
Our content is general education, not medical advice. Please read our disclaimer and talk to a doctor or registered dietitian for personal health decisions. Spotted a mistake? Email hello@fitbyatal.in and we will fix it and update the article date.