Rolled vs. Quick Oats: Can I swap them?

By weight? Yes. By volume? No. Quick oats are cut smaller and pack tighter, so 1 cup of quick oats weighs MORE than 1 cup of rolled oats. Always swap by grams (e.g., 100g for 100g).

Rolled Oats (Old Fashioned)

Rolled oats are the poster child for density issues: they are flat, irregular, and create massive air gaps in a cup. A 'loose' cup weighs about 90g, but tap it on the counter and it can hit 120g! For consistent porridge or cookies that hold together, forget the cup and trust the scale.

What is Rolled Oats (Old Fashioned)?

Quick convert

Ingredient

US cup = 236.588 mL
1 tbsp = 14.787 mL
1 tsp = 4.929 mL

Density source:Reference tested

Rolled Oats (Old Fashioned) — Cup → g

Cups	g
1/8 cup	11
1/4 cup	22
1/3 cup	30
1/2 cup	45
2/3 cup	60
3/4 cup	67
1 cup	90
1 1/2 cups	135
2 cups	180

Rolled Oats (Old Fashioned) — Tbsp → g

Tbsp	g
1	6
2	11
3	17
4	22
5	28
6	34
7	39
8	45
9	51
10	56
11	62
12	67
13	73
14	79
15	84
20	112
25	140
30	169

Rolled Oats (Old Fashioned) — g → Cups

g	Cups
50	0.6
100	1.1
150	1.7
200	2.2
250	2.8
300	3.3
350	3.9
400	4.4
450	5.0
500	5.6
600	6.7
700	7.8
800	8.9
900	10.0
1000	11.1

Rolled Oats (Old Fashioned) — mL → g

mL	g
10	4
25	10
50	19
75	29
100	38
125	48
150	57
200	76
250	95
500	190
750	285
1000	380

Rolled Oats (Old Fashioned) — Tsp → g

Tsp	g
1	2
2	4
3	6
4	7
5	9
6	11
7	13
8	15
9	17
10	19
11	21
12	22
13	24
14	26
15	28
20	37
25	47
30	56

Rolled Oats (Old Fashioned) — oz → g

oz	g
1	28
2	57
3	85
4	113
5	142
8	227
10	283
12	340
15	425
20	567
25	709
30	850
40	1134
50	1417

Cups-to-Grams Printable Chart

100+ ingredients with exact gram weights per cup, tbsp and tsp. The reference card every cook needs.

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Grains

Rice, oats, quinoa, couscous and similar grains hydrate based on precise ratios. Volume is skewed by kernel size and air gaps. Weighing both dry and cooked grains keeps texture predictable.

Why weigh dry grains?Cup measures change with grain size and packing. Weight guarantees the right water ratio for fluffy, non-gummy results.

FAQ

Rolled vs. Quick Oats: Can I swap them?: By weight? Yes. By volume? No. Quick oats are cut smaller and pack tighter, so 1 cup of quick oats weighs MORE than 1 cup of rolled oats. Always swap by grams (e.g., 100g for 100g).

By Fidamen-Chefsolver Team | Reviewed by Ugo Candido | Updated August 31, 2026