GIFSQ Tools · Module 1 — Food Composition & Proximate Analysis · Tool 13 of 500
Scale a nutrient amount between serving sizes, and get the amount per 100 g for the label. Enter the amount in one serving and the serving weights.
Try sample values — fills the form with the worked example below.
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Amount per 100 g
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Amount in target serving
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Scale factor
Equation: Amount per 100 g = amount per serving ÷ serving size (g) × 100
Amount in target serving = amount per serving × target serving (g) ÷ serving size (g).
Method: Nutrition labelling practice, Codex Guidelines on Nutrition Labelling (CAC/GL 2-1985) and Regulation (EU) No 1169/2011 — nutrients declared per 100 g or 100 mL and per portion.
Assumptions: the nutrient is spread evenly through the food, so the amount scales in direct proportion to the serving weight; density is 1 g per mL only where the serving is given in grams.
Limitations: the scaling does not apply where a serving is a counted unit (one biscuit, one slice) with a fixed nutrient content; rounding on the label follows the labelling rules, not this page.
Rounding: results to 2 decimal places; intermediate values are not rounded.
This is a calculation aid, not a laboratory report — confirm against your accredited method before citing a value.
Amount in target serving = amount per serving × target serving (g) ÷ serving size (g).
Method: Nutrition labelling practice, Codex Guidelines on Nutrition Labelling (CAC/GL 2-1985) and Regulation (EU) No 1169/2011 — nutrients declared per 100 g or 100 mL and per portion.
Assumptions: the nutrient is spread evenly through the food, so the amount scales in direct proportion to the serving weight; density is 1 g per mL only where the serving is given in grams.
Limitations: the scaling does not apply where a serving is a counted unit (one biscuit, one slice) with a fixed nutrient content; rounding on the label follows the labelling rules, not this page.
Rounding: results to 2 decimal places; intermediate values are not rounded.
This is a calculation aid, not a laboratory report — confirm against your accredited method before citing a value.
Worked example: Sugar 5.00 g in a 30.00 g serving. Per 100 g: 5.00 ÷ 30.00 × 100 = 16.67 g. In a 60.00 g serving: 5.00 × 60.00 ÷ 30.00 = 10.00 g; scale factor 2.00.
Enter values above to see results.
Label values are declared per 100 g and per serving. If the target serving equals the serving size, the amount is unchanged — the scale factor is 1.00. Tool 13 of 500 — GIFSQ
