100g vs Serving Size
Why Grocery Savvy uses per-100g nutrition values for dietary tags and food comparisons.
Overview
In Grocery Savvy, nutrition on food details and many dietary tag calculations are shown on a per 100g basis. This creates a consistent way to compare foods across brands and package sizes.
Why 100g Instead of Serving Size?
Serving sizes are useful for understanding one typical eating amount, but they can vary across products. Two similar foods may use different serving amounts, which can make side-by-side comparisons less clear.
Using a fixed 100g basis helps Grocery Savvy:
- Compare foods consistently across brands and package formats
- Apply dietary tag logic on the same baseline
- Reduce confusion when products use very different serving amounts
How This Affects Dietary Tags
Dietary tags (for example, sodium, cholesterol, sugar, or fat-related considerations) are calculated from nutrition data normalized to 100g, along with ingredient and allergen information where relevant.
Grocery Savvy uses commonly accepted nutrition references, including FDA and USDA guidance, as part of this process.
Why Numbers May Differ From the Package Label
In the United States, package labels are usually shown per serving, not per 100g. Because of that, values in Grocery Savvy may look different until both are compared on the same basis.
You may also see differences due to:
- Product updates or reformulations
- Regional label variations
- Timing differences between data sources and package updates
What Should You Trust Most?
Grocery Savvy is a guide designed to help you review and compare foods quickly. For final purchase and health decisions, always review the product package label.
If you have medical nutrition needs, follow guidance from your healthcare professional.