Serving Size Calculator

Work out serving size instantly with clear inputs, formula shown and shareable results.

About Serving Size Calculator

Serving weight is the finished dish weight divided by the number of servings; dividing by the target size instead tells you how many portions the batch really yields. Recipes state servings but not portion weight, so the same 'serves six' dish can be 150 g or 300 g a head, which matters for both nutrition labels and buying.

Formulas

Serving weight

per serving = total finished weight / number of servings

Yield at a target size

servings = total weight / target serving size

Worked example

With the default values below, Serving Size Calculator returns Weight per serving of 200.0. Change any input above and every figure here is recalculated in your browser.

Inputs used

Total finished weightminimum 1 g: 1,200 g
Number of servingsminimum 1: 6
Target serving sizeminimum 1 g: 200 g

Results

Weight per serving: 200.0 g
Servings at the target size: 6.00
Difference from the target size: 0.0 g
Per serving in ounces: 7.05 oz

Step by step

1Values used
2Serving weight
3Yield at a target size
4Weight per serving= 200.0 g
5Servings at the target size= 6.00
6Difference from the target size= 0.0 g
7Per serving in ounces= 7.05 oz

Assumptions and limits

The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

How is the Serving Size figure worked out?

per serving = total finished weight / number of servings. Serving weight is the finished dish weight divided by the number of servings; dividing by the target size instead tells you how many portions the batch really yields.

Why does this matter?

Recipes state servings but not portion weight, so the same 'serves six' dish can be 150 g or 300 g a head, which matters for both nutrition labels and buying.

What do I need to enter?

Enter total finished weight, number of servings, target serving size. The defaults shown are a realistic worked example — swap in your own figures to get a result you can use.