Evidence-led portion comparisons
Label Serving vs Your Portion.
Compare a serving used in US product data with an amount you select. The result is arithmetic, not dietary advice or a claim about typical behavior.
— unique portions submitted Includes anonymous slider reports.
Pack size: 500 ml
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What these numbers mean
Product data: the opening example is illustrative. Live search results come from the named third-party source and may reproduce label information.
Selected portion: the slider shows your input. It is not presented as a population estimate.
Community data: submitted amounts are user-reported PerBiscuit data. Aggregates are published only after the stated evidence threshold is met.
Calculated values: nutrition scaling, ratios and sugar-teaspoon equivalents are PerBiscuit calculations. The teaspoon display assumes 4g sugar per teaspoon for illustration.
Read the methodologyWorking with industry
Better portions start with better information
Food manufacturers already hold detailed information about their products. PerBiscuit adds something that is often missing: how much people actually eat and drink in the real world.
By sharing anonymous consumer portion data with the food industry, researchers and public health organisations, we can help improve serving guidance, product design and nutrition communication. The aim is not to criticise individual companies. It is to give the industry better evidence and help shape products and labels that work better for everyone.
Keep exploring
Discover
Explore sourced methods, clearly labeled calculations and the limits of the available portion data.
US Pack-to-Serving Ranking
Up to 100 eligible products ranked by a defined pack-to-label-serving calculation.
Read article →Breakfast Cereal Dilemmas
A 40g, 70g and 90g worked example with assumptions stated.
Read article →Soft Drinks: A Four-Pour Scenario
An illustrative calculation that keeps per-100ml data separate from a label serving.
Read article →America's Most Optimistic Serving Size Award
Read the provisional eligibility, sample-size and confidence rules. No winner is declared.
Read article →Serving Match Score
The formula and evidence threshold for a measure that is not yet publishing product scores.
Read article →How US Serving Sizes Are Determined
A primary-source guide to FDA rules and the decisions manufacturers apply within them.
Read article →Methods and standards
See how PerBiscuit works
Our calculations, evidence rules and publishing safeguards are public. Start with any part of the process below.
Methodology
How portions are normalized, calculations are made and uncertainty is handled.
Read the methodology →Editorial policy
The standards that govern sourcing, claims, language and publication.
Read the policy →Review process
The checks applied before an analysis or ranking is published.
See the review process →Data sources
Where product records come from and how source quality is described.
Explore data sources →Funding and independence
How commercial relationships are separated from editorial decisions.
Read the disclosure →Corrections
How to report an error and how material changes are recorded.
See the corrections policy →Our mission
We're not here to tell you what to eat. We're here to make the label make sense.
PerBiscuit records the serving used in sourced product data, lets you select or report another amount, then recalculates the nutrition values. Clear source labels and limitations make the comparison useful to readers, educators and researchers without turning it into dietary advice.
When the label uses one biscuit, what portion would you select?
Create a profile to track your reports. Aggregated community results appear only when the published evidence threshold is met.
No spam. One email when we launch, then it's up to you.