Sun-Dried Tomatoes — Cups to Grams
1 cup oil-packed drained = 110g — dry-packed julienned is only 54g/cup; an 8.5 oz jar yields ~2.2 cups drained
1 cup Sun-Dried Tomatoes = 110 grams
Quick Conversion Table — Sun-Dried Tomatoes
| Cups | Grams | Tablespoons | Teaspoons |
|---|---|---|---|
| ¼ | 27.5 g | 3.99 tbsp | 12 tsp |
| ⅓ | 36.7 g | 5.32 tbsp | 16 tsp |
| ½ | 55 g | 7.97 tbsp | 23.9 tsp |
| ⅔ | 73.3 g | 10.6 tbsp | 31.9 tsp |
| ¾ | 82.5 g | 12 tbsp | 35.9 tsp |
| 1 | 110 g | 15.9 tbsp | 47.8 tsp |
| 1½ | 165 g | 23.9 tbsp | 71.7 tsp |
| 2 | 220 g | 31.9 tbsp | 95.7 tsp |
| 3 | 330 g | 47.8 tbsp | 143.5 tsp |
| 4 | 440 g | 63.8 tbsp | 191.3 tsp |
Why Sun-Dried Tomato Weight Varies So Much by Form
Few ingredients show a larger weight variation by form than sun-dried tomatoes. The 54g dry-packed to 225g oil-packed undrained range represents a 4.2× weight difference for the same 1-cup volume — a discrepancy that can completely derail a recipe if the wrong form is used.
The water removal physics: Fresh tomatoes are approximately 94% water by weight. Sun-drying removes 90–95% of this water, concentrating the solids into a small, dense, chewy piece. A fresh Roma tomato weighing 60g produces approximately 6–8g of dry sun-dried product — a 7.5–10× weight reduction. This extreme dehydration is why dry-packed sun-dried tomatoes are so light (54g per cup): the pieces are very low-density, porous, and irregularly shaped.
Oil-packed vs dry-packed: Oil-packed sun-dried tomatoes are rehydrated before packing — they've absorbed oil and have a plumper, softer texture than dry-packed. The drained weight (110g/cup) reflects the tomatoes themselves after most oil has dripped off. The undrained weight (225g/cup) includes the substantial oil surrounding each piece. This oil is flavored with basil, garlic, and the tomatoes' own released compounds — it's a culinary ingredient in its own right, not just packaging liquid.
Measuring technique matters: For oil-packed drained: drain in a small colander for 2–3 minutes, then gently press between paper towels to remove surface oil before measuring. For dry-packed: scoop loosely without pressing — the julienned strands are fragile and will compress dramatically if packed. For rehydrated: drain well and squeeze gently to remove excess water before measuring.
| Measure | Oil-packed drained (g) | Oil-packed undrained (g) | Dry-packed (g) | Rehydrated (g) |
|---|---|---|---|---|
| 1 tablespoon | 6.9g | 14.1g | 3.4g | 10g |
| ¼ cup | 27.5g | 56.25g | 13.5g | 40g |
| ½ cup | 55g | 112.5g | 27g | 80g |
| 1 cup | 110g | 225g | 54g | 160g |
| 8.5 oz jar (drained) | ~242g (~2.2 cups) | — | — | — |
Flavor Concentration and Culinary Applications
The flavor concentration in sun-dried tomatoes is remarkable: the drying process removes 90% of the water but retains nearly all the lycopene, glutamic acid (natural umami), and flavor precursor compounds. Per 100g of product, sun-dried tomatoes contain approximately 10× the lycopene, 5× the potassium, and 6× the iron of fresh tomatoes. They also contain 8–10g of naturally occurring glutamate per 100g — a level comparable to Parmesan and dried mushrooms — which is why they contribute intense savory depth to dishes far beyond their volume.
Pasta applications: The standard restaurant ratio is ¼ cup (28g) drained, chopped, per 100g dry pasta. This provides intense tomato flavor without overwhelming the dish. Toss with olive oil, garlic, capers, and basil for a pantry pasta that requires no cooking of the sauce. For cream-based pasta (pasta con pomodori secchi e panna): use ⅓ cup (37g) per 2 servings in a 1-cup heavy cream sauce.
Sun-dried tomato pesto: Blend 1 cup (110g) oil-packed drained + 4 tablespoons (60ml) olive oil + 2 cloves roasted garlic + 3 tablespoons (18g) pine nuts + 2 tablespoons (12g) Parmesan + salt. Yields approximately 280g (1.1 cups) of intense pesto. This pesto stores refrigerated for 2 weeks under a layer of olive oil or frozen for 3 months. Use 3 tablespoons (approximately 38g) per 100g dry pasta.
Tapenade: Combine ½ cup (55g) oil-packed sun-dried tomatoes + 1 cup (135g) Kalamata olives (pitted) + 2 tablespoons (17g) capers + 2 cloves garlic + 3 tablespoons (45ml) olive oil. Pulse in a food processor to a coarse paste — approximately 350g tapenade. Serve on 10g (1 tablespoon) per crostino. Keeps refrigerated under oil for up to 3 weeks.
Dry-Packed vs Oil-Packed: Which to Buy and When
The choice between dry-packed and oil-packed sun-dried tomatoes has practical implications for storage, cost, and culinary application.
Dry-packed advantages: Significantly cheaper per gram of actual tomato product. One 3 oz (85g) package of dry-packed julienned sun-dried tomatoes contains approximately 85g of pure tomato — far more tomato per dollar than the oil-packed equivalent. Dry-packed store indefinitely at room temperature in an airtight container. They are the better choice when you want to control the oil in the final dish or when rehydrating in a specific liquid (stock, wine) for extra flavor.
Oil-packed advantages: Immediate use convenience — no rehydration step. The softened, plumper texture is preferred in applications where the tomato is used whole or in large pieces (salads, antipasto, pizza topping, sandwich fillings). The accompanying oil is a valuable cooking oil flavored with tomato compounds, basil, and garlic — essentially a condiment oil that comes free with the purchase. Oil-packed tomatoes also have a more rounded flavor because the oil carries fat-soluble flavor compounds that dry-packed does not.
Storage and food safety: Commercially produced oil-packed sun-dried tomatoes are safe because the tomatoes are dried to a low enough water activity to prevent bacterial growth even in the anaerobic oil environment. Homemade garlic-infused sun-dried tomatoes in oil present a botulism risk — any homemade tomato-in-oil product must be refrigerated and used within 2 weeks or pressure-canned. Never store homemade tomato-oil mixtures at room temperature.
Sun-Dried Tomatoes vs Tomato Paste: Density and Flavor Comparison
Both sun-dried tomatoes and tomato paste are concentrated tomato products, but they differ fundamentally in texture, density, and flavor profile — and substituting one for the other without understanding these differences produces noticeably different results.
Density comparison: Tomato paste (262g/cup) is more than twice as dense as drained oil-packed sun-dried tomatoes (110g/cup) because paste is a smooth, deaerated puree with no air spaces. Sun-dried tomatoes are chunky, fibrous pieces with irregular shapes creating 30–40% air volume in a measuring cup.
Flavor profile: Tomato paste is made by cooking fresh tomatoes for hours, concentrating sugars through Maillard reaction and developing a sweet, cooked, slightly caramelized flavor. Sun-dried tomatoes, dried at lower temperatures (50–70°C in commercial dehydrators), retain more of the fresh tomato's volatile aromatics — fruity esters, grassy compounds, and the characteristic tangy-sweet-acidic profile of ripe Roma tomatoes. The result is a brighter, more complex flavor than the deeper, darker notes of tomato paste.
Substitution ratio: To substitute sun-dried tomato paste (blend dry-packed in food processor to a paste) for commercial tomato paste: use 1.5 tablespoons sun-dried paste per 1 tablespoon tomato paste, as the texture is coarser and the flavor less concentrated by volume. Add 1 teaspoon olive oil per tablespoon to replicate the paste's smooth consistency in sauces.
- USDA FoodData Central — Tomatoes, sun-dried
- Italian Agri-Food Products Quality Consortium — Pomodori secchi production standards
- Journal of Agricultural and Food Chemistry — Lycopene content in dehydrated tomatoes
- California Tomato Growers Association — Sun-drying methods and quality standards
- Food Safety Authority — Botulism risk in home oil-preserved vegetables