How the ratings work

Every grade, seal and colour on a product page is computed from that pack’s own declared nutrition panel — nothing is entered by hand, and none of it is an official regulatory mark. Here is exactly how each one is derived.

Nutri-Score — how it is scored

Computed with the Nutri-Score nutrient-profiling model: penalty points for energy, sugar, saturated fat and salt per 100 g, offset by points for fibre and protein. A lower total gives a better grade. Oils, ghee and nuts use the fats sub-scale (saturated-fat share of total fat). Fruit / vegetable content isn’t on the label, so it is treated as zero; drinks aren’t graded yet. A product is shown as Not rated when its panel is incomplete or only given per serving.

A
Great — Best-in-class — low in sugar, salt and saturated fat, usually with some fibre or protein.
B
Good — A sound everyday choice; slightly higher in one nutrient of concern.
C
Moderate — Fine occasionally — watch the portion size.
D
Poor — High in sugar, salt or saturated fat; best kept to a treat.
E
Avoid — Very high in sugar, salt and/or saturated fat — a rare treat only.

Warnings — when a seal appears

Black “Excess” seals are computed on the PAHO / WHO nutrient profile thresholds per 100 g. Indicative only; not an official seal. A seal shows when a threshold is crossed:

Excess calories — ≥ 275 kcal per 100 g (solid foods).
Excess sugar — sugars ≥ 10% of energy (added sugars when declared).
Excess saturated fat — saturated fat ≥ 10% of energy.
Excess sodium — ≥ 1 mg sodium per 1 kcal of energy.
Excess trans fat — ≥ 0.2 g trans fat per 100 g.

Nutrients — what the colours mean

Values as declared on the pack. Sugars, Fat and Sodium are traffic-lit; the rest are shown for context only. "Not available" means the pack doesn't declare that nutrient at all.

Green — Low — Within the healthy range per serving (UK FSA front-of-pack thresholds).
Amber — Medium — Neither low nor high — a reasonable amount, but not free rein.
Red — High — Above the guideline amount per serving; the nutrient to watch on this pack.
Blue — Protein — Shown for reference — a beneficial nutrient, not scored.
Teal — Fibre — Shown for reference — more is generally better, not scored.
Grey — Carbs — Context only — no colour judgement applied.

Sources & credits

We didn’t design any of these formulas — we implement published, publicly documented models exactly as their authors specified them. Full credit to:

Nutri-Score — the grade algorithm (2022–2023 update), by Santé publique France and the Nutri-Score Scientific Committee. The name and logo are their registered trademark.
FSA / Ofcom nutrient profiling model — the scientific basis Nutri-Score is built on, by the UK Food Standards Agency.
PAHO / WHO Nutrient Profile Model — the thresholds behind the black “Excess” seals (the same basis Chile, Mexico and Peru use), by the Pan American Health Organization.
Front-of-pack traffic-light thresholds — the Green / Amber / Red nutrient bands, from the UK FSA front-of-pack nutrition labelling guidance.

Our results are computed from each pack’s declared nutrition panel and are indicative only — not endorsed by, affiliated with, or verified by any of the organisations above.