Oats grams to cups
Enter the weight of oats you want and see it in cups and spoons. Useful for breakfast portions printed in grams on the pack.
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How to use it
- Enter weight, cup standard, oat type and your own weighed grams per cup (optional).
- The result appears straight away and updates as you edit.
- Copy the result, or copy a link that keeps the same values to share it.
How it is calculated
cups = grams ÷ 81 g per US cup (236.59 mL) for the first type. With a 250 mL metric cup divide by 85.59 g. The leftover part of a cup is shown in tablespoons (16 per US cup, 15 mL each in metric), rounded to the nearest half spoon.
Example
Inputs: Weight = 40 g, Cup standard = US cup (236.6 mL), Oat type = Rolled or quick oats (flakes). Result: Cups: 0.49; In cups and spoons: 0 cups + 8 tbsp; Volume in millilitres: 117 mL.
Limits and caveats
- The flakes figure is the USDA 81 g per cup; thick jumbo flakes may weigh more or less.
- How you fill the cup changes the weight: spoon it in and level it without packing, or weigh your cup once and enter the figure in the optional box.
- USDA figures are rounded to the whole gram per cup, and grain size, variety and moisture make your real weight a little higher or lower.
Questions about this tool
How many cups is 40 g of oats?
About half a US cup, 0.49 cup or roughly 8 tablespoons.
How many cups are in a 500 g bag of oats?
About 6.2 US cups of flakes.
Why is the result different for whole oats?
A cup of whole oat grains weighs about 156 g, nearly twice a cup of flakes.