How do I enter per 100 g nutrition labels?
Keep the base amount at 100 g and enter the calories, protein, fat, and carbs from the label.
Kitchen
Calorie and Macro Gram Converter
Convert nutrition label values such as per 100 g or per package into the grams you actually eat.
Updated: May 15, 2026
Input
Scale calories and macros from a base serving to the amount you eat.
If the label is per 100 g, keep the base amount at 100 g.
Result
300 kcal
Calories
15g
Protein
7.5g
Fat
45g
Carbs
Use this as a guide and adjust for your real conditions.
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How to use
- Enter the base grams, calories, protein, fat, and carbs on the left.
- Enter the grams you plan to eat.
- The calories and macros for that amount appear on the right.
Useful tips
- Useful when you want to check calories and macros for 150 g of food; adjust inputs to compare outcomes.
- Prefer product labels, recipe notes, and equipment markings when available.
- When unsure, start with a smaller or shorter estimate and adjust from the actual result.
Formula
Target value = base value × target grams ÷ base grams. Protein, fat, and carbs use the same multiplier.
Notes
- Nutrition labels and ingredient values vary by product and cooking state.
- Use this as an everyday estimate, not as dietary or medical guidance.
- For precise nutrition management, confirm with official sources or a professional.
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FAQ
What does PFC mean?
P is protein, F is fat, and C is carbs. This tool scales gram values by weight.
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