Recipe Yield Calculator

The conversion factor is the number you multiply each ingredient quantity by to scale the recipe. It's calculated by dividing the desired serving size by the original serving size. For example, if your recipe serves 4 but you need it to serve 8, your conversion factor is 8 ÷ 4 = 2.

First, calculate your conversion factor (desired servings ÷ original servings). Then multiply every ingredient quantity by that factor. For example, if the factor is 0.5 and you need 2 cups of flour, the scaled amount is 1 cup. This calculator does all of that automatically.

Yes — spices, salt, leavening agents (baking powder and baking soda), and strong flavourings like vanilla extract often shouldn't be scaled at a 1:1 ratio. A good rule of thumb is to scale these by about 75% of the calculated amount first, then taste and adjust. Cooking times and temperatures may also need adjustment when scaling significantly.

This tool scales quantities proportionally based on the conversion factor. It works with any unit you enter — cups, tablespoons, grams, ounces, etc. Just make sure you keep units consistent; if the original uses cups, the scaled output will also be in cups.

Beyond ingredient quantities, consider equipment capacity (pan sizes, oven space), cooking time (larger batches often take longer), and ingredient behaviour at scale (more yeast doesn't always mean better bread). It's generally better to make multiple standard batches than one very large batch for baked goods.

Absolutely. Enter your original servings and your desired servings — for example, 12 original and 4 desired gives a factor of 0.333. The calculator applies that fraction to every ingredient quantity automatically.

Recipe scaling is mostly linear, but cooking is influenced by pan geometry, heat transfer, evaporation rates, and ingredient chemistry. Very small or very large batches can behave differently. Always monitor your dish during cooking and be prepared to make small adjustments.

This calculator supports up to five ingredients at a time. For longer recipes, you can note the conversion factor displayed and apply it manually to additional ingredients, or run the calculator in separate batches.