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8 oz Old-Fashioned Rolled Oats = 2 ½ cups + 1 tsp

8 oz (226.8 grams) of old-fashioned rolled oats equals 2 ½ cups + 1 tsp (2.52 US Customary cups, 2.38 Metric 250 mL cups, 596.2 mL, or 40.32 tablespoons) when measured dip and sweep at a verified density of 90g per US Customary cup.

Metric weight: 226.8g • Exact volume: 2.52 US Cups • 2.38 Metric Cups • 40.32 tbsp

Batch
Measuring density
Standard: Dip and sweep90g / cup
Converted Measure
8 oz Old-Fashioned Rolled Oats (Dip and sweep) =
2 ½ US Cups + 1 tsp
Physical scoop breakdown2.52 cups
1 cup
1 cup
1/2 cup
1 tsp
Edit either side to reverseRolled Oats chart →
Grams
226.8 g
Ounces
8 oz
US Cups
2 ½ cups + 1 tsp
Metric (250mL)
2.38 c
Tablespoons
40.32 tbsp
Milliliters
596.2 mL

Kitchen note: 1 US Customary Cup (236.6 mL) of old-fashioned rolled oats (dip and sweep) weighs 90g, while 1 International Metric Cup (250 mL) weighs 95g.

Batch Scaling Around 8 oz Old-Fashioned Rolled Oats

Batch scaling conversion table around 8 oz of Old-Fashioned Rolled Oats (0.5× to 3× recipe batches in grams, ounces, US cups, and milliliters)
Batch Scale Weight (g / oz) US Cups & Spoons Metric (mL)
Half Batch (0.5×) 113.4g (4 oz) 1 ¼ cups 298.1 mL
Standard (1×) 226.8g (8 oz) 2 ½ cups + 1 tsp 596.2 mL
1.5× Batch 340.2g (12 oz) 3 ¾ cups + 1 ½ tsp 894.3 mL
Double Batch (2×) 453.6g (16 oz) 5 cups + 2 tsp 1192.4 mL
Triple Batch (3×) 680.4g (24 oz) 7 ½ cups + 2 ¾ tsp 1788.6 mL

Measuring 8 oz of Old-Fashioned Rolled Oats in the Kitchen

Because 1 US Customary Cup (236.6 mL) of old-fashioned rolled oats weighs 90g when measured dip and sweep, 8 Ounces (226.8g) translates to 2.52 US cups (2 ½ cups + 1 tsp).

Without a kitchen scale, measure 2 ½ cups + 1 tsp (40.32 tablespoons total) using dip and sweep technique. Spoon rolled oats gently into a dry measuring cup until heaping, then sweep level with a straight edge. Shaking or tapping the cup settles the broad, flat oat flakes into trapped gaps, increasing cup weight to nearly 100 grams.

Source note: USDA FoodData Central FDC ID 173904; King Arthur Baking Ingredient Weight Chart

Frequently Asked Questions

How many cups is 8 ounces (8 oz) of old-fashioned rolled oats? ▾

8 ounces (226.8 grams) of old-fashioned rolled oats (Dip and sweep, 90g per US cup) equals 2 ½ cups + 1 tsp (2.52 US Customary Cups, 2.38 Metric 250 mL cups, or 40.32 tablespoons).

Can I substitute quick oats for rolled oats by weight? ▾

Yes, 90 grams of quick oats can replace 90 grams of rolled oats in most baking recipes, producing a slightly denser and more uniform crumb.

Why does a cup of rolled oats weigh so little? ▾

Whole oat groats that have been steamed and flattened into wide flakes create large, irregular air pockets inside a volume measuring cup.