What this calculator does
Dry to cooked pasta weight works out how much a portion of dry pasta weighs once boiled, given its typical expansion factor. Enter your own figures above and the answer updates as you type: nothing is fixed in the code, so the result reflects exactly the numbers you supply.
The formula this calculator evaluates is printed under the tool and explained below, so you can check the working by hand or reuse it in a spreadsheet.
The formula
Formulacooked weight = dry weight × expansion factor
The inputs explained
| Field | What to enter |
|---|---|
| Dry pasta (g) | A number, measured in g. Starts at 100. |
| Expansion factor | A number. Starts at 2.25. |
Worked examples
Every figure in the tables below is produced by this page’s own calculator at build time, so the numbers and the tool always agree. Select any row to load that scenario.
How the answer changes with dry pasta
Every other input is held at the calculator’s starting values while dry pasta varies. Select any row to load that scenario into the calculator.