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Nutrition Crash Course

FREE TOOLS: Four nutrition calculators. No sign-up needed.

Nutrition Calculators

Explore food energy and nutrients using published data—not personal dietary targets.

Food Calorie CalculatorCalories, protein, carbohydrate, fat and fibre for foods and meals.Recipe Calorie & Nutrition CalculatorCalories and nutrients for a whole recipe and per serving, with every USDA match checked by you.Protein CalculatorUK and EU adult reference amounts from body weight, with sports ranges shown separately.Macro Calculator for Weight LossAdults only: a modest calorie deficit plus protein, carb and fat grams, with every step of the working shown.

Understanding the numbers

The calculator matches foods to USDA FoodData Central, a US database. Check preparation, food type and portion size before using a match. A general entry may differ from a specific product or recipe in your country.

Results require the site's USDA connection to be configured. When data is unavailable, the calculator explains the problem rather than showing substitute values.

New to food energy? Read Lesson 2: Calories & Energy before exploring the calculator.