Broccoli Cups, Grams and Ounces Converter

Why must you choose raw or cooked first?

A cup is not a fixed weight of broccoli. Pieces leave spaces between one another, and preparation changes both the food and the way it fits in a measuring cup. A cooked cup should not borrow the raw cup weight simply because the number on the measuring vessel is the same.

The two profiles are named for their reference foods. Raw means chopped raw broccoli. Cooked means boiled and drained broccoli from the selected USDA entry. The cooked profile is not a precise density measurement for every steamed, roasted, frozen or finely mashed preparation.

How to use the converter

Select the preparation, enter the amount and choose whether that amount is in cups, grams or weight ounces. Read the other units from the result. Check the preparation label again before copying the number into a recipe or food log.

For a small amount, enter a decimal such as 0.5 rather than typing a written fraction. The converter scales the selected reference cup weight linearly. It does not change the cup weight because you entered a half cup or two cups. Your actual filled cup may weigh a little differently.

Reference conversions at a glance

These figures are useful starting points for comparing a recipe written by volume with a quantity weighed on a scale. They are reference conversions, not a guarantee about how densely your florets are packed. Keep the cut size reasonably consistent when using a measuring cup.

The ounce column uses the ordinary food-weight ounce. NIST conversion tables distinguish mass units from volume units. The calculation uses 28.349523125 g per ounce, then rounds the displayed result so that you are not asked to measure a kitchen portion to unrealistic precision.

Worked example: convert two raw cups

With the raw chopped profile selected, two cups multiply the 91 g reference by two. The result is 182 g. Dividing that weight by 28.349523125 gives approximately 6.42 oz. There is no cooking-yield assumption in that calculation.

Now keep the amount at two cups but select cooked, boiled and drained broccoli. Two times 156 g gives 312 g, approximately 11.01 oz. The difference comes from using a different food-volume reference. It does not mean that cooking the same two raw cups produces two cooked cups.

Worked example: start with a scale reading

Suppose you have 250 g of chopped raw broccoli and a recipe describes the amount in cups. Divide 250 by 91 to get approximately 2.75 reference cups. If the 250 g was weighed after boiling and draining, divide by 156 instead, giving approximately 1.60 reference cups.

Weighing the food does not remove the need to identify its preparation. It removes uncertainty about the mass you have. Converting that mass back into cups still uses the selected reference density, so a cup result is best treated as a practical volume estimate.

A weight ounce is different from a fluid ounce

The ounce option here is a unit of weight, the kind displayed by a food scale. A fluid ounce measures volume. Do not enter the volume of a measuring jug in the ounce field and expect a correct broccoli weight.

Likewise, the tool does not convert broccoli into millilitres by assuming that it weighs the same as water. A jug filled with florets contains air spaces. For a recipe using a cup measure from another country or a differently sized kitchen cup, weigh the food when precision matters.

How should you fill a cup of broccoli?

Use pieces of a similar size and place them into the cup without crushing them down. A few large branches with wide gaps behave differently from fine chopped fragments. Avoid shaking and packing one measurement much more tightly than the next.

If the recipe provides a gram amount as well as cups, use its stated gram amount. That amount belongs to the recipe you are making. The converter is helpful when a weight is missing; it should not override a clear measured quantity already supplied by the author.

What about stalks, frozen broccoli and roasting?

Chopped edible stalk and floret mixtures can vary in how they fill a cup. Frozen broccoli adds another variable because piece size and surface ice differ between packs. Roasted broccoli may sit loosely or carry oil and seasonings. None has a universal cup weight supplied by this converter.

For those preparations, measure a cup of your food and weigh it if you need a closer conversion. For a whole head, use the head-to-cups estimator with a measured usable weight. For portioning a cooked batch, use the cooked portion tool rather than guessing how many cups survived cooking.

Frequently asked questions

Sources and reference data

• USDA FoodData Central: food data documentation
• NIST Guide to the SI: conversion factors by quantity
• USDA FoodData Central: Broccoli, raw (FDC 170379)
• USDA FoodData Central: Broccoli, boiled and drained (FDC 169967)

Download the food reference table with exact USDA food IDs and per-100 g nutrient values.