Unit pricing: comparing value at the store

Summary by iinventedlight (AI-assisted). Courtesy of National Institute of Standards and Technology. Public domain (US government work); use does not imply endorsement by National Institute of Standards and Technology.

Unit pricing: comparing value at the store

Summary

The unit price is the cost per ounce, per pound, per count or similar. Divide the total price by the quantity, in the same unit, to see which package is the better deal.

Draft. License: public domain (US government work). Sources: [S1] National Institute of Standards and Technology, "Unit Pricing Guide (NIST SP 1181, 2025 ed.)"; [S2] National Institute of Standards and Technology, "Uniform Unit Pricing: Tools for Consumers to Fight Shrinkflation".

Facts

id: F1 claim: Unit price equals the total price divided by the quantity in a standard unit such as ounces. confidence: high date: 2026-11-02 sources: [S1, S2] license: public domain (US government work) checked_on: 2026-11-02
id: F2 claim: Compare only in the same unit; convert first (for example 1 pound = 16 ounces). confidence: medium date: 2026-11-02 sources: [S1] license: public domain (US government work) checked_on: 2026-11-02
id: F3 claim: Unit prices help spot shrinkflation, where a package gets smaller while the price stays the same. confidence: medium date: 2026-11-02 sources: [S2] license: public domain (US government work) checked_on: 2026-11-02
id: F4 claim: Unit price labeling rules differ by state, and NIST publishes a model guide for consistent shelf labels. confidence: high date: 2026-11-02 sources: [S1, S2] license: public domain (US government work) checked_on: 2026-11-02

Source: https://nvlpubs.nist.gov/nistpubs/SpecialPublications/1181e2025/NIST.SP.1181e2025.html · License: public-domain · Summary by iinventedlight (AI-assisted). Courtesy of National Institute of Standards and Technology. Public domain (US government work); use does not imply endorsement by National Institute of Standards and Technology.

Cite this

Permanent ID: iil:note:f3h4me7j

iinventedlight Library. 2026. "Unit pricing: comparing value at the store." iinventedlight Library, iil:note:f3h4me7j, version of 2026-11-02. https://iinventedlight.com/library/reference/us-gov/unit-pricing/. License: public-domain. Summary of https://nvlpubs.nist.gov/nistpubs/SpecialPublications/1181e2025/NIST.SP.1181e2025.html.

@misc{iil_note_f3h4me7j,
  author = {{iinventedlight Library}},
  title = {{Unit pricing: comparing value at the store}},
  howpublished = {iinventedlight Library},
  year = {2026},
  date = {2026-11-02},
  url = {https://iinventedlight.com/library/reference/us-gov/unit-pricing/},
  note = {Permanent ID iil:note:f3h4me7j. License: public-domain. Summary of https://nvlpubs.nist.gov/nistpubs/SpecialPublications/1181e2025/NIST.SP.1181e2025.html.},
}

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