Spaghetti vs Vermicelli
Spaghetti is round solid strand, about 2 mm across. Vermicelli is round solid strand, thickness varies by country.
Side by side, to scale
10 mmSpaghetti: 250 to 260 mm by 1.8 to 2 mm
Vermicelli: 250 to 260 mm by 1.5 to 2.1 mm
Footprints from the length and width in each record, one scale for both. See every shape on the chart.
| Family | Long strands | Long strands |
|---|---|---|
| Region | Campania | Campania |
| Section | Round solid strand, about 2 mm across | Round solid strand, thickness varies by country |
| Length | 250 to 260 mm | 250 to 260 mm |
| Width or diameter | 1.8 to 2 mm | 1.5 to 2.1 mm |
| Surface | Smooth | Smooth |
| Hollow | No | No |
| Dough | Semolina and water | Semolina and water |
| Cook time | 9 to 12 min | 7 to 11 min |
| Brands with a page | De Cecco, Rummo, Garofalo, Mancini, Barilla, La Molisana | not measured |
| Catalogue numbers | De Cecco no. 12, Rummo no. 3, Garofalo no. 9, La Molisana no. 15 | not measured |
| Cook time across brands | 7 to 13 min | not measured |
| Brand dimensions | Rummo: 260 mm long, 1.9 mm across; Mancini: 260 mm long, 2.2 mm across | not measured |
| Energy, dry, per 100 g | 371 kcal (dry semolina pasta) | 371 kcal (dry semolina pasta) |
| Protein, dry, per 100 g | 13.0 g | 13.0 g |
| Products catalogued | 2719 | 59 |
| Pairs with | Aglio e olio, Pomodoro, Marinara, Vongole, Carbonara, Cacio e pepe, Puttanesca | Vongole, Aglio e olio, Marinara, Pomodoro, Puttanesca |
Spaghetti
A strand has no cavity and no ridges, so a sauce must coat it. Thin, slippery sauces win: oil and garlic, clams, a smooth tomato, a pecorino emulsion. A chunky ragu slides off and pools in the bowl. Rome dresses spaghetti with carbonara and cacio e pepe. Naples gives it clams and tomato.
Vermicelli
Treat Italian vermicelli as a slightly heavy spaghetti: clams, garlic and oil, tomato. Treat the thin export version as spaghettini and keep the sauce light.
Can you swap them?
Spaghetti for vermicelli: yes, the same strand under its modern name.
Both take Aglio e olio, Pomodoro, Marinara, Vongole, Puttanesca.
Only spaghetti: Carbonara, Cacio e pepe.
Sources
- Dimensions, surface, dough, and cook time: each shape page names the brand page, spec sheet, or measured box behind every figure.
- Brands, catalogue numbers, brand cook times, and brand dimensions: the brand product pages linked on each shape page, read on 2026-08-25.
- Energy and protein: USDA FoodData Central, per 100 g of the dough, public domain.
- Products catalogued: Open Food Facts, Open Database License, read on 2026-08-25. A crowd database: a count is a floor.