Whole Oat Groats Cups to Grams Converter
One US cup of Whole Oat Groats weighs 180 grams. Half a cup weighs 90g and a quarter cup weighs 45g. Spoon whole oat groats into dry measuring cup.
Whole Oat Groats Cups to Grams Converter
Convert volumetric recipe cups of whole oat groats into exact kitchen scale weight in grams.
Custom package weights override standard database densities for this session without altering official database records.
Cups of Whole Oat Groats to Grams Conversion Table
Complete volume to weight chart converting recipe cups of whole oat groats into grams across major international cup standards, fluid ounces, and tablespoons.
| Cup Portion | US Customary (g) | US Legal (g) | Metric Cup (g) | Imperial Cup (g) | Ounces (oz) | Tablespoons |
|---|---|---|---|---|---|---|
| ¼ cup | 45g | 46g | 48g | 54g | 1.59 oz | 4.0 tbsp |
| ⅓ cup | 60g | 61g | 63g | 72g | 2.12 oz | 5.3 tbsp |
| ½ cup | 90g | 91g | 95g | 108g | 3.17 oz | 8.0 tbsp |
| ⅔ cup | 120g | 122g | 127g | 144g | 4.23 oz | 10.7 tbsp |
| ¾ cup | 135g | 137g | 143g | 162g | 4.76 oz | 12.0 tbsp |
| 1 cup | 180g | 183g | 190g | 216g | 6.35 oz | 16.0 tbsp |
| 1¼ cups | 225g | 228g | 238g | 270g | 7.94 oz | 20.0 tbsp |
| 1½ cups | 270g | 274g | 285g | 324g | 9.52 oz | 24.0 tbsp |
| 1¾ cups | 315g | 320g | 333g | 378g | 11.11 oz | 28.0 tbsp |
| 2 cups | 360g | 365g | 380g | 432g | 12.70 oz | 32.0 tbsp |
| 2½ cups | 450g | 456g | 476g | 540g | 15.87 oz | 40.0 tbsp |
| 3 cups | 540g | 548g | 571g | 649g | 19.05 oz | 48.0 tbsp |
| 3½ cups | 630g | 639g | 666g | 757g | 22.22 oz | 56.0 tbsp |
| 4 cups | 720g | 730g | 761g | 865g | 25.40 oz | 64.0 tbsp |
Why Your Cup of Whole Oat Groats Might Weigh Differently
Understanding key volumetric variables prevents measuring errors when converting recipes to scale weights in grams.
Compaction & Particle Headspace
Scooping whole oat groats directly compresses air voids between granules, cramming up to 15 percent extra mass into the same cup volume.
Regional Cup Standard Variance
A US Customary cup holds 236.59ml (180g), a US Legal cup holds 240ml (183g), and a Metric cup holds 250ml (190g). Misidentifying cup capacity alters recipe scale mass by up to 6 percent.
Atmospheric Moisture & Settling
Granular particles of whole oat groats absorb ambient humidity during storage, increasing bulk density and scale readout per cup portion.
Frequently Asked Questions: Cups of Whole Oat Groats to Grams
Targeted answers for converting cup volumes of whole oat groats into scale mass in grams.
How many grams is 1/2 cup of Whole Oat Groats?
Half a US customary cup of Whole Oat Groats weighs exactly 90 grams. In comparison, 1/2 Metric cup (125ml) weighs 95 grams, while 1/2 UK Imperial cup weighs 108 grams.
How many grams is 1/4 cup of Whole Oat Groats?
One-quarter US customary cup of Whole Oat Groats weighs 45 grams. This equals 4 US tablespoons or 4 fluid drams.
How do I convert cups of Whole Oat Groats to grams for baking?
To convert cups of Whole Oat Groats to grams, multiply the number of cups by 180. For example, 1.5 cups equals 270 grams, and 2 cups equals 360 grams on a kitchen scale.
Why does 1 cup of Whole Oat Groats weigh differently depending on technique?
Volumetric measuring cups measure space rather than weight. Particle compaction and air pockets can alter Whole Oat Groats cup weight by 5 to 15 percent.
How many grams is 1 Metric cup of Whole Oat Groats versus a US cup?
One Metric cup (250ml) of Whole Oat Groats weighs 190 grams, 1 US Legal cup (240ml) weighs 183 grams, and 1 US Customary cup (236.59ml) weighs 180 grams.
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Density data sourced from USDA FoodData Central. Verified by the Grams to Cups Editorial Team on 2026-08-20.