FDA Nutrition Facts Rounding Rules Calculator & Compliance Auditor (21 CFR 101.9)

Q: When do I write '< 1 g' vs '0 g' for Total Sugars or Dietary Fiber?

If a serving contains less than 0.5g, it is declared as 0g. If it contains at least 0.5g but less than 1.0g, it is declared as '< 1 g' (or 'less than 1 g').

TOOL 1 · LIVE CLIENT-SIDE AUDITOR

1. FDA 21 CFR 101.9 Nutrition Facts & Supplement Facts Vector Builder

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))

Panel Format (21 CFR 101.9)

Servings Per Container

Serving Size (EN + Metric)

Tamaño por Ración (Spanish)

1. Core Macros, Lipids & Sodium (21 CFR 101.9(c)(1)–(5))

Raw Calories (kcal)

Total Fat (g) [DRV 78g]

Saturated Fat (g) [DRV 20g]

Trans Fat (g)

Cholesterol (mg) [DRV 300mg]

Sodium (mg) [DRV 2,300mg]

2. Carbs, Sugars & Protein (21 CFR 101.9(c)(6)–(7))

Total Carb (g) [DRV 275g]

Dietary Fiber (g) [DRV 28g]

Total Sugars (g)

Added Sugars (g) [DRV 50g]

Protein (g) [DRV 50g]

3. Mandatory Micronutrients & Net Weight (21 CFR 101.9(c)(8))

Vitamin D (mcg) [RDI 20mcg]

Calcium (mg) [RDI 1,300mg]

Iron (mg) [RDI 18mg]

Potassium (mg) [RDI 4,700mg]

Net Quantity (21 CFR 101.7)

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

Ingredients Statement (Descending Order by Weight · 21 CFR 101.4)

Manufacturer / Distributor Name & Address (21 CFR 101.5)

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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 101.9 Nutrition Facts Rounding Rules Calculator & Table

Displaying unrounded decimal numbers from recipe software (like 143.6 Calories or 6.3g Total Fat) is one of the most common triggers for FDA warning letters and retail buyer rejections at Whole Foods, Target, and Amazon Grocery.

Calories: <5 cal = 0; ≤50 cal = round to nearest 5 cal increment; >50 cal = round to nearest 10 cal increment.
Total Fat, Saturated Fat, Trans Fat: <0.5g = 0g; <5g = round to nearest 0.5g; ≥5g = round to nearest 1g.
Sodium: <5mg = 0mg; 5–140mg = round to nearest 5mg; >140mg = round to nearest 10mg.
Carbohydrates, Fiber, Sugars, Protein: <0.5g = 0g; 0.5g–0.99g = '< 1 g'; ≥1g = round to nearest 1g.

Complete FDA 21 CFR 101.9(c) Rounding Increments Reference Chart

Nutrient / Component	Range 1 (Zero Threshold)	Range 2 (Mid Increment)	Range 3 (Upper Increment)
Calories	< 5 cal → declare 0	5 to 50 cal → nearest 5 cal	> 50 cal → nearest 10 cal
Total / Sat / Trans Fat	< 0.5 g → declare 0g	0.5 g to < 5 g → nearest 0.5 g	≥ 5 g → nearest 1 g
Cholesterol	< 2 mg → declare 0mg	2 to 5 mg → declare '< 5 mg'	> 5 mg → nearest 5 mg
Sodium	< 5 mg → declare 0mg	5 to 140 mg → nearest 5 mg	> 140 mg → nearest 10 mg
Carb / Fiber / Sugars / Protein	< 0.5 g → declare 0g	0.5 to < 1 g → declare '< 1 g'	≥ 1 g → nearest 1 g
Vit D / Calcium / Iron / Potassium	< 2% RDI → may declare 0	≤ 10% RDI → nearest 2% DV	10–50% → nearest 5% (>50% → 10%)

Frequently Asked Regulatory Questions (FDA / OEHHA / CPSC)

Why does my recipe total of 143 Calories become 140 Calories on an FDA label?

Under 21 CFR 101.9(c)(1), any calorie value above 50 must be expressed to the nearest 10-calorie increment. Therefore, 143 rounds to 140, and 146 rounds to 150.

When do I write '< 1 g' vs '0 g' for Total Sugars or Dietary Fiber?