Cups to Grams Oats Converter

Convert cups of oats to an approximate weight in grams or kilograms. Choose dry rolled oats or cooked plain oatmeal before entering the quantity: their cup weights describe very different foods. This is useful when a recipe gives a volume but your kitchen scale measures mass.

How to use this tool

1. Choose the ingredient state that matches what you will actually measure.
2. Select a US customary cup or a 250 mL metric cup.
3. Enter the number of cups as a decimal, such as 0.75 for three quarters.
4. Read the estimated mass and use the reference table to check other quantities.

Formula

grams = cups × reference grams per US cup × selected cup mL ÷ 236.5882365

The metric option assumes the same bulk density as the reference US cup. It is a proportional estimate, not a separate laboratory measurement. Zero cups gives zero mass.

Example

For 1.5 US cups of dry rolled oats, multiply 1.5 by 80 to obtain approximately 120 g, or 0.12 kg. The same number of cups of cooked plain oatmeal gives 1.5 × 234 = 351 g. Neither result predicts how much cooked oatmeal 120 g of dry oats will make.

Reference and scope

The dry setting uses Quaker’s baking chart for uncooked, spooned rolled oats: 80 grams per US cup. The cooked setting uses USDA’s 2002 household measure of 234 grams for a cup of plain, nonfortified oatmeal. These settings do not describe steel-cut groats, oat flour, flavored packets or a cooked recipe with an unknown water content.