Nutrition Label Calculator: Per 100g vs. Per Serving
Convert per-100g nutrition facts into your actual serving size in seconds
Food labels list calories per 100g, but you rarely eat exactly 100g. This tool converts the per-100g numbers into the real calories and macros for the amount you actually ate.
도구를 불러오는 중…
🔒 Everything runs 100% in your browser. Your files and input are never uploaded to any server.
How to use
- Enter the calories per 100g, the package's total weight (g), and how much you ate (g).
- Get the actual calories (kcal) you consumed.
FAQ
- Can I calculate straight from a per-100g label?
- Yes — just enter how many grams you ate and the tool scales the numbers proportionally to show your real calorie intake.
- Does it convert carbs, protein, and fat too?
- Yes. Enter the per-100g carb, protein, and fat values and the tool scales them all to your actual serving size, not just calories.
- What if I ate the food in several small portions?
- Add up the total grams you ate across all portions and enter that combined number — the tool calculates your total calorie intake for the day.