Subway Tuna Sub on White Bread

USDA composition for subway tuna sub on white bread, and what a Nutrition Facts panel would print at the serving you choose — rounded by the FDA’s own declaration rules.

Also calledSubway tuna sandwichtuna salad subtuna hoagietuna herotuna sandwichtuna submarine sandwichtuna baguettesándwich de atún
Reference basis
Label serving

Switch to 100 g to see the raw published values with no rounding applied.

Calories
520
Protein
29 g
Total fat
28 g
Sodium
780 mg
Nutrient
Calories523.77 kcal520 kcal
Total Fat28.44 g28 g36%
Saturated Fat5.1903 g5 g26%
Trans Fat0.10902 g0 g
Cholesterol66.36 mg65 mg22%
Sodium779.73 mg780 mg34%
Total Carbohydrate37.92 g38 g14%
Dietary Fiber1.659 g2 g6%
Total Sugars4.5741 g5 g
Added Sugarsnot reported
Protein29.151 g29 g58%
Vitamin Dnot reported
Calcium322.32 mg320 mg25%
Iron3.7209 mg3.7 mg20%
Potassium419.49 mg420 mg8%

Label declares applies the rounding rules in 21 CFR 101.9(c) to the measured amount at this serving. Select any rounding rule for the band and its citation; select a column heading to hide that column.

Showing inch sub, 237 grams. 520 calories.

Insights

Every figure below has a formula — select any heading to see it. These are properties of the ingredient, so they do not move with serving size: 49% of subway tuna sub on white bread’s calories come from fat whether you weigh out inch sub or inch sub.

These are descriptive ratios, not nutrient content claims. A claim such as “good source of calcium” or “high protein” is evaluated per RACC serving under 21 CFR 101.54 — a different calculation, on a different basis, which this page does not make.
5.6 g
22.3%
48.9%
29.0%
2.21 kcal/g
15.30 g
22.86
1.86
1.25
3.15
4.45
6.47

Where every number on this page came from

Three versioned inputs. If any changes, the page is rebuilt and the build id below changes with it.

Composition
USDA FoodData Central
FDC 170316 · SR Legacy · released 2018-04
Rounding & %DV
FDA 21 CFR 101.9
§ 101.9(c), § 101.9(d)(7) · eCFR snapshot 2026-02-12
Read on eCFR →
Naming & ratios
BetterMenu enrichment
8 aliases · 13 ratios
Page built from bundle v1.3.0 · Aug 26, 2026 · commit 7fdde67
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Daily Values shown are for adults and children 4 years and older. This page reports published composition data for a reference food — it is not an analysis of your formulation, and it is not a substitute for one.

For informational purposes only; verify against 21 CFR 101.9.