The supported arithmetic
Divide complete box price by declared net-weight ounces. The observed calculations are 3.29/8.9,2.99/13.5 and 5.59/13. The tool rounds displayed unit rates while keeping actual merchandise arithmetic in integer cents. This compares purchase mass, not taste, nutrition quality or individual value.
Why that basis works
All three selected retail offers explicitly identify net-weight ounce sizes. There is no need to reconstruct grams from approximate servings or guess density. Fluid ounces measure volume and cannot replace mass ounces. A cup paired with grams belongs to a specific panel; it is not a conversion for another cereal.
Do not hide conditions
Frosted Flakes has the lowest observed per-ounce quote but unavailable pickup and delivery in the displayed context. Life's available pickup price is not a delivered total. Target's indication can change before checkout. Stripping those conditions from a rate could suggest a transaction that cannot be completed.
Enter a new quote carefully
If the same selected box changes price, edit its price. If its size changes, the limited denominator no longer applies; establish a new exact record first. Shipping and tax belong to the final total rather than an invented zero. Price per bowl or piece remains unsupported because no exact physical bowl or piece quantity was established.
Rounding display versus rounding money
The per-ounce rate is rounded for readability,so multiplying that displayed rate back by ounces can differ slightly from the original price. The merchandise total uses exact entered cents rather than the rounded rate. This prevents display rounding from changing the actual11.87base. Keep enough precision for comparison,but use the actual complete offer price for payment planning rather than reconstruct it from a four-decimal unit rate.
Sources & scope
Checked November 5, 2026. Manufacturer and retailer references support the specific statements. Dated displayed prices are not final checkout quotes, performance rankings or performance testing. This shopping reference does not replace the exact product label or qualified individual advice. Current received labels and independent food/nutrition/content/commerce review remain pending.
Cheerios selected Target39602815 ↗
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