Skip to main content

Guides & Resources

Guides for Understanding Ultra-Processed Food

Resources for understanding ultra-processed food, from our two-score system to store-specific score analysis.

60+Guides
7Store Guides
445K+Products Scored

Getting Started

Brand analysis, product score comparisons, and aisle-by-aisle strategies for each store.

Complete Guide Directory

All 60+ guides, organized by topic. Click any group to expand.

Score Reference Tables

Quick reference for our Processing Score and Nutrition Score systems.

Processing Score (PS)

Lower is better

Processing Score reference

Range
Level
% of Products
≤2.5
Level 1: Minimally Processed
20.9%
≤5.0
Level 2: Processed
27.3%
≤8.0
Level 3: Highly Processed
24%
>8.0
Level 4: Ultra-Processed
27.8%

Nutrition Score (NS)

Higher is better

Nutrition Score reference

Range
Rating
What It Means
8-10
Excellent
High protein/fiber, low negatives
5-7
Good
Balanced nutrition
3-4
Fair
Some nutritional value
0-2
Poor
High sugar/sodium, low nutrients

Ketzal for iPhone

Check What's Already In Your Kitchen.

Scan a barcode, on the shelf or in your pantry, and see both scores in seconds. Free, no account needed.

Scan It Free
A product in Ketzal with a Processing Score and a Nutrition Score