Recipe Serving Size Calculator — Measured Yield
Divide a measured finished recipe into equal portions, or find how many complete portions fit a chosen portion mass and how much food remains.
Work out portion sizes from a measured finished recipe yield. You can divide the whole dish equally, or choose a portion mass and find the number of complete portions plus the remainder. This arithmetic uses edible food mass after cooking, rather than assuming that the starting ingredients keep the same weight.
How to use this tool
- Weigh the finished food without its container and select the matching mass unit.
- Choose equal portions or portions of a chosen mass.
- Enter either a positive whole portion count or a positive target portion mass.
- Read the resulting portion size or complete-portion count and leftover amount.
Formula
Equal portion mass = finished yield / portion count; complete portions = floor(finished yield / chosen portion mass); remainder = yield − complete portions × chosen mass
Both masses in count mode use the same unit. Decimal inputs are compared as decimal fractions for whole-portion counting, avoiding a false missing portion from ordinary binary rounding at boundaries such as 0.3 / 0.1.
Example
A finished dish weighing 1,200 g gives 300 g per portion when divided into four. If you instead choose 250 g portions, it provides 4 complete portions and 200 g remaining. The equivalent fractional yield is 4.8 portions, which is different from five complete portions.
Frequently asked questions
Should I enter raw ingredient weight?
Use the finished edible yield. Water absorbed or evaporated, drained liquid, bones, peel and food left in the pan can change what is actually available to serve. The calculator does not predict those changes.
Is the calculated size a healthy serving recommendation?
No. It describes your selected arithmetic division. Nutrition-label serving amounts and individual dietary needs are separate questions; the tool does not recommend how much someone should eat.
Do equal-weight portions have equal calories?
Only if energy-containing ingredients are distributed appropriately. A stew portion with more meat or a dessert portion with more topping can differ even when its total mass matches another portion.
What happens to leftovers?
Count mode keeps them visible rather than rounding up to a complete portion. Equal mode divides the entire stated yield. Grams, kilograms and avoirdupois ounces or pounds are supported; cup volumes require additional information.
Sources
Last updated: 2026-10-30