Chocolate chunks
One US cup of chocolate chunks weighs between 170 and 182 grams, depending on how the cup is filled and which source measured it. That range is the answer; a single number would not be. Every figure behind it is below, with the method each source used.
Also called large chocolate chips, chocolate baking chunks, chocolate discs, semisweet chocolate chunks, dark chocolate chunks, Nestle Toll House Chunks, Ghirardelli baking chunks.
Most sites print one number for a cup of chocolate chunks. This page prints 170 to 182 grams, because that is what USDA FoodData Central and King Arthur actually measured, and it names the method behind every figure rather than picking a favourite.
Two or more sources describe the same way of filling the cup and still disagree, by 7.1%. That is more than this site will average over, so both figures stand and neither is chosen. Two sources disagree by 7.06%, over the 5% sugar tolerance. USDA publishes 182 g per cup for the large-chip variant of its chocolate-chip food record (FDC 167976); King Arthur publishes 170 g per cup uniformly across standard chips, chunks and chopped chocolate. The gap reflects a real methodological difference: USDA distinguishes three size classes on the same food record with size-specific portion weights, while King Arthur rounds to a single figure across chip and chunk forms at the chart's precision. This entry publishes the range rather than picking one figure.
| Volume | Weight |
|---|---|
| 1 cup | 170–182 g |
| 3/4 cup | 127.5–136.5 g |
| 2/3 cup | 113.3–121.3 g |
| 1/2 cup | 85–91 g |
| 1/3 cup | 56.7–60.7 g |
| 1/4 cup | 42.5–45.5 g |
| 1 tablespoon | 10.6–11.4 g |
| 1 teaspoon | 3.5–3.8 g |
| Filling the cup | 1 cup | Source |
|---|---|---|
| Standard, large chunks or discs loose in the cup | 182 g | USDA FoodData Central |
| Standard, large chunks or discs loose in the cup | 170 g | King Arthur |
Why this page publishes a range
Two sources 7.06 percent apart, over the 5 percent sugar tolerance, so this entry publishes the range rather than a single figure. USDA FoodData Central FDC 167976 (Candies, semisweet chocolate, SR Legacy) publishes 1 cup large chips or chunks at 182 g, implying a density of 0.7693 g/mL. King Arthur's Ingredient Weight Chart lists 'Chocolate Chunks' at 1 cup = 170 g, implying 0.7186 g/mL.
The difference between the two figures reflects a real methodological gap between the sources rather than measurement error. USDA distinguishes three size classes on the same food record: standard chips at 168 g per cup, mini chips at 173 g per cup, and large chips or chunks at 182 g per cup. King Arthur rounds to a single 170 g per cup figure across standard chips, chocolate chunks, and roughly chopped chocolate, reflecting the chart's home-baking audience where fine distinctions between chip sizes rarely matter to recipe outcomes. USDA's finer breakdown reflects nutritional-research needs where per-cup calorie and macronutrient accuracy demands size-specific portions. Both approaches are legitimate authoritative sources for their respective purposes, but they publish materially different cup weights for chunks specifically, so this entry publishes the range.
Chocolate chunks pack denser than standard chocolate chips for a straightforward geometric reason. Chunks are larger irregular pieces (typically 10 to 12 mm across, roughly 30 chunks per ounce) compared to standard chips (5 to 7 mm teardrops, 60 chips per ounce). Larger pieces interlock more effectively in a scoop-filled cup because piece-scale air gaps are reduced when neighboring pieces have contacting flat faces. This completes the size-dependent packing story on this site: mini chocolate chips at 3 to 4 mm pack at 173 g per cup by filling gaps between larger pieces; standard chips at 5 to 7 mm sit in the middle at 168 g per cup per USDA; chunks at 10 to 12 mm pack at 182 g per cup by interlocking per USDA, or at 170 g per cup per King Arthur if measured with the same convention as standard chips. All size classes are made from identical chocolate material, so the density variation comes entirely from geometry.
As with all chocolate forms on this site, composition does not meaningfully affect cup weight at fixed chip size. Semisweet, dark, milk, and white chocolate chunks publish at essentially the same density within tolerance because the intrinsic material density of chocolate (1.1 to 1.3 g/mL) varies less across cocoa content than the apparent chunk-form density varies with particle size or with source methodology. This range applies to chunks of any chocolate composition.
Product variants: pre-formed chunks (Nestle Toll House Chunks, Ghirardelli Bittersweet Chocolate Chunks) are the primary commercial form. Callets and couverture discs (Callebaut, Valrhona) are professional-grade chocolate pieces of similar size that pack at similar cup weights. Roughly chopped chocolate from a bar can weigh slightly more per cup than pre-formed chunks because the irregular pieces from chopping can pack tighter than uniform manufacturer-cut chunks; King Arthur nonetheless publishes chopped chocolate at the same 170 g per cup within their chart's precision. Chocolate wafers (Merckens, Wilton candy melts) and larger callets pack at similar cup weights to chunks.
Chocolate chunks are placed in the sugar category alongside the existing chocolate chips, white chocolate chips, and mini chocolate chips entries on this site. The category rule tracks physical packing behavior rather than chemistry or ingredient family: small firm particles that pack like granulated sugar sit in the sugar category, regardless of specific chocolate composition or exact particle geometry. The 5 percent sugar tolerance applies here, and the 7.06 percent observed gap between sources exceeds it, hence the range publish.
No standards body publishes a bulk density for chocolate chunks. FDA regulations under 21 CFR 163.130 (sweet chocolate) and 163.123 (milk chocolate) specify composition requirements but not physical density. Two authoritative sources with an over-tolerance gap and no reconciling third source, so this entry is held at low confidence and range-published until a third independent measurement (professional culinary reference or producer's laboratory data) can resolve whether the true chunk density sits closer to USDA's precise size-specific figure or King Arthur's rounded convention.
Sources
Standard, large chunks or discs loose in the cup — no single figure published
Two sources disagree by 7.06%, over the 5% sugar tolerance. USDA publishes 182 g per cup for the large-chip variant of its chocolate-chip food record (FDC 167976); King Arthur publishes 170 g per cup uniformly across standard chips, chunks and chopped chocolate. The gap reflects a real methodological difference: USDA distinguishes three size classes on the same food record with size-specific portion weights, while King Arthur rounds to a single figure across chip and chunk forms at the chart's precision. This entry publishes the range rather than picking one figure.
- USDA FoodData Central182 g per cupFDC 167976, Candies, semisweet chocolate (SR Legacy). Published: 1 cup large chips or chunks = 182 g. Density 0.7693 g/mL. USDA's same food record publishes multiple size-specific cup portions: standard chips at 168 g, mini chips at 173 g, and large chips or chunks at 182 g per cup, reflecting size-dependent packing efficiency.
- King Arthur170 g per cupIngredient Weight Chart, 'Chocolate Chunks', 1 cup = 170 g. Density 0.7186 g/mL. King Arthur publishes 170 g uniformly for standard chips, chunks, and chopped chocolate; the chart does not distinguish size classes at this precision.
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