LabelCompliance Studio · US FDA 21 CFR 101.9 · California Prop 65 (2026) · CPSIA § 103 · Amazon FNSKU Code-128B
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21 CFR 101.9 LabelCompliance Studio
21 CFR 101.7 NET WEIGHT RULES

FDA 21 CFR 101.7 Net Quantity of Contents (oz / lb / g / mL) & Type Size Guide

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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Enter raw lab or recipe values below. Our mathematical engine applies strict FDA 21 CFR 101.9(c) rounding increments and 2026 Daily Reference Values (%DV) in real time.

⚡ Quick-Load Presets:
Panel Geometry & Serving Declarations (21 CFR 101.9(b))
1. Core Macros, Lipids & Sodium (21 CFR 101.9(c)(1)–(5))
2. Carbs, Sugars & Protein (21 CFR 101.9(c)(6)–(7))
3. Mandatory Micronutrients & Net Weight (21 CFR 101.9(c)(8))

FASTER Act 9 Major Food Allergens (21 U.S.C. 343(w) · Includes Sesame)

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Automatic FDA 21 CFR 101.9(c) Rounding & %DV Audit Log

Mandatory Nutrient Raw Input FDA Rounded Label Value 2026 %DV 21 CFR 101.9 Rounding Rule Applied
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Regulatory Technical Brief: FDA 21 CFR 101.7 Net Quantity of Contents (oz / lb / g / mL) & Type Size Guide

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.

  • Dual declaration syntax: `Net Wt. 8 oz (227 g)`, `Net Wt. 16 oz (1 lb) (454 g)`, or `12 fl oz (355 mL)`.
  • Minimum letter height calculator based on Principal Display Panel (PDP) square inch area.
  • Built-in Net Weight & Ingredient block included in our FDA Nutrition Facts studio.

Minimum Type Size for Net Weight Based on Principal Display Panel (PDP) Area (21 CFR 101.7(i))

Area of Principal Display Panel (PDP)Minimum Type Height (Inches)Minimum Type Height (mm / Points Approx.)
≤ 5 sq. in.1/16 inch1.6 mm (~4.5–6 pt minimum)
> 5 sq. in. up to 25 sq. in.1/8 inch3.2 mm (~9–10 pt)
> 25 sq. in. up to 100 sq. in.3/16 inch4.8 mm (~14 pt)
> 100 sq. in. up to 400 sq. in.1/4 inch6.4 mm (~18 pt)
> 400 sq. in.1/2 inch12.7 mm (~36 pt)

Frequently Asked Regulatory Questions (FDA / OEHHA / CPSC)

How do I calculate the area of a cylindrical bottle's Principal Display Panel (PDP)?

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`).

When do I use 'Net Wt.' vs 'Net Contents' or 'Fl. Oz.'?

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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US CPG Label Compliance Library (FDA 21 CFR 101.9 · Prop 65 · CPSIA · Amazon FNSKU)

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