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Health & Fitness

Diet & Nutrition Calculators

8 free calculators for calories, macronutrients, protein intake, TDEE, BMR and more.

⚡ Instant Results 🔒 100% Private 📱 Works on All Devices 🆓 Always Free
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8 Diet & Nutrition Calculators

Find the right tool for any diet or nutrition calculation.

Most Used

The tools our users reach for every day.

🔥 Top Pick
Calorie Calculator
Calculate your daily calorie needs based on your activity level and goals.
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⚡ Top Pick
TDEE Calculator
Find your Total Daily Energy Expenditure by activity level for weight management.
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🥗 Top Pick
Macro Calculator
Get your ideal protein, carb and fat targets tailored to your goals.
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💤 Top Pick
BMR Calculator
Calculate your Basal Metabolic Rate — the calories your body burns at complete rest.
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⚡ About SwiftCalculators

Accurate Tools You Can Actually Trust

Every calculator on SwiftCalculators is built on verified formulas and tested against real-world results. Whether you're counting calories, tracking macros, or optimizing your TDEE — you get answers you can rely on, instantly, without any cost or account needed.

⚡
Instant Results
Results appear as you type — no loading screens, ever.
🎯
Verified Formulas
Every calculation checked by domain experts.
🔒
100% Private
All calculations run locally in your browser.
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Works Everywhere
Fully responsive on mobile, tablet and desktop.
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