Free calculators
Nutrition calculators that show their math
Work out your calories, protein and macros with the same formulas the Calorix app uses. Each calculator explains how it works and cites its sources. Nothing you type leaves your browser.
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TDEE calculator
Maintenance calories, BMR and daily targets for every goal.
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Calorie deficit calculator
A daily target and a projected goal date, with safe pace limits.
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Protein calculator
A daily protein target in grams, split across your meals.
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Macro calculator
Calories, protein, carbs, fat, fiber and water in one split.
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BMI calculator
BMI with adult categories or the CDC percentile for ages 2 to 19.
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Intermittent fasting calculator
Your eating and fasting windows on a 24-hour clock.
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GLP-1 protein calculator
A daily protein range and grams per meal on GLP-1 medication.
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