Calculate dual US customary (oz, lb, fl oz) and metric (g, kg, mL, L) Net Quantity declarations and minimum Principal Display Panel (PDP) font heights under 21 CFR 101.7.
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| Mandatory Nutrient | Raw Input | FDA Rounded Label Value | 2026 %DV | FDA Standard Rounding Rule Applied |
|---|
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Under the Fair Packaging and Labeling Act (FPLA) and 21 CFR 101.7, the Net Quantity of Contents statement must appear in the bottom 30% of the Principal Display Panel (PDP) in both US Avoirdupois/Fluid measure and Metric units, using a minimum type height determined by the area of the PDP.
| Area of Principal Display Panel (PDP) | Minimum Type Height (Inches) | Minimum Type Height (mm / Points Approx.) |
|---|---|---|
| ≤ 5 sq. in. | 1/16 inch | 1.6 mm (~4.5–6 pt minimum) |
| > 5 sq. in. up to 25 sq. in. | 1/8 inch | 3.2 mm (~9–10 pt) |
| > 25 sq. in. up to 100 sq. in. | 3/16 inch | 4.8 mm (~14 pt) |
| > 100 sq. in. up to 400 sq. in. | 1/4 inch | 6.4 mm (~18 pt) |
| > 400 sq. in. | 1/2 inch | 12.7 mm (~36 pt) |
Under 21 CFR 101.1(a), for a cylindrical container, the area of the Principal Display Panel is 40% of the product of the height of the container times the circumference (`0.40 × Height × π × Diameter`).
Solid, semisolid, or viscous foods are declared in terms of weight ('Net Wt. X oz (Y g)'), whereas liquid foods are declared in fluid measure ('X fl oz (Y mL)').
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