To convert ounces of dry breadcrumbs into cups, multiply by 0.26249558: one ounce comes to 0.26249558 cups. Every ingredient has its own figure here, because the units are measuring different things and only the density links them.
Water is the yardstick: 1 mL of it weighs 1 g. Dry breadcrumbs comes in at 0.45649 g per mL, or 45.65% of water, which is why a cup of it is 108 g rather than 236.6 g. Volume and weight only line up for water, and only in metric.
A cup of dry breadcrumbs is 108 g when it is measured the standard way, but how it gets into the cup changes the answer: between about 97.2 g and 129.6 g covers the range from lightly spooned to firmly packed. That 20% spread is larger than most of the adjustments recipes fuss over, and it disappears entirely the moment the ingredient is weighed instead.
One cup of dry breadcrumbs is 3.81 oz. US kitchen scales usually step in eighths of an ounce, which is 3.54 g — around 3.28% of a cup of this ingredient, so the scale is precise enough for a full cup and coarse for a spoonful. That is why recipes mix the two systems: ounces for the bulk, spoons for the small amounts.
How the figure is arrived at: Fine, dry and unseasoned. Fresh breadcrumbs weigh about half as much per cup because the crumb has not collapsed.
The formula
ounces- The amount of dry breadcrumbs you are converting, in ounces
0.262495584491- Cups per ounce for dry breadcrumbs, from its density of 0.45649 g/mL
cups- The equivalent quantity in cups
How it works, step by step
- Enter the quantity in ounces.
- It is multiplied by 0.262495584491, the cups-per-ounce figure for dry breadcrumbs.
- The result appears in cups, with a second reading in tbsp beneath it.
- Use the measure table if you want a standard recipe quantity rather than a number you type in.
Worked examples
2 oz of dry breadcrumbs in cups
A recipe calling for 2 oz of dry breadcrumbs needs 0.524991 cups on the scale. The arithmetic is 2 × 0.26249558 = 0.52499117, and halving the recipe halves the weight to 0.262496 cups.
4 oz of dry breadcrumbs in cups
A recipe calling for 4 oz of dry breadcrumbs needs 1.04998 cups on the scale. The arithmetic is 4 × 0.26249558 = 1.0499823, and halving the recipe halves the weight to 0.524991 cups.
12 oz of dry breadcrumbs in cups
12 oz of dry breadcrumbs weighs out at 3.14995 cups. Divide 3.14995 by 0.26249558 and you get back to 12 oz, which is the quickest check that the factor is the right way up.
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Frequently asked questions
How many cups are in 1 oz of dry breadcrumbs?
One ounce of dry breadcrumbs is 0.26249558 cups. Half that quantity is 0.131248 cups and double it is 0.524991 cups, so the figure scales straight up and down — there is no offset in this conversion, only the factor.
Why is a cup of dry breadcrumbs not 236 g like water?
Because weight per cup depends on what is in the cup. Dry breadcrumbs has a density of 0.45649 g per mL where water has 1.00, so a cup of it weighs 108 g rather than 236.6 g. That is a difference of 128.6 g per cup, and it is the reason a single volume-to-weight factor cannot be applied to every ingredient.
Does how I measure it change the weight?
Yes, and by more than most people expect. Handling changes the weight of a cup of dry breadcrumbs by roughly 20% — about 10.8 g either side of 108 g — because fine, dry and unseasoned. Weighing removes the question entirely.
Is a fluid ounce of dry breadcrumbs the same as an ounce?
No. A fluid ounce is a volume — one eighth of a US cup, 29.57 mL — and an ounce is a weight. One fluid ounce of dry breadcrumbs weighs 0.4762 oz, so the two readings differ by 52.4%. They coincide only for something with the density of water, and then only roughly.
Is this a US cup or a metric cup?
US customary: 236.59 mL, which is the cup every US recipe means. A metric cup is 250 mL, so the same cup of dry breadcrumbs would weigh 114.12 g instead of 108 g — 6.12 g more, or 5.67%. Australian and some European recipes use the metric cup, and the difference is large enough to matter in baking.
Do I need a scale for this, or will measuring cups do?
A scale, if the result matters. Volume measuring carries a spread of about 20% for dry breadcrumbs — roughly 21.6 g on a 108 g cup — while a domestic scale is accurate to a gram or two. For anything where the ratio of ingredients drives the outcome, bread and pastry above all, weigh it.
How much does 2 cup of dry breadcrumbs weigh?
2 cup of dry breadcrumbs comes to 216 g, or 7.6192 ounces. This page runs that calculation in reverse — enter a weight and it returns the volume — and the cups-to-ounces page does it in the direction the question is usually asked.
Dry breadcrumbs in ounces and cups
| Ounces | Cups | Unrounded |
|---|---|---|
| 1/2 oz | 0.131248 cup | 0.1312477922 |
| 1 oz | 0.262496 cup | 0.2624955845 |
| 2 oz | 0.524991 cup | 0.524991169 |
| 3 oz | 0.787487 cup | 0.7874867535 |
| 4 oz | 1.04998 cup | 1.049982338 |
| 6 oz | 1.57497 cup | 1.574973507 |
| 8 oz | 2.09996 cup | 2.099964676 |
| 12 oz | 3.14995 cup | 3.149947014 |
| 16 oz | 4.19993 cup | 4.199929352 |
Based on 108 g per cup of dry breadcrumbs. One ounce of dry breadcrumbs is 0.26249558 cups.
| Measure | Grams | Ounces | Millilitres |
|---|---|---|---|
| 1 cup | 108 g | 3.81 oz | 236.6 mL |
| 3/4 cup | 81 g | 2.86 oz | 177.4 mL |
| 2/3 cup | 72 g | 2.54 oz | 157.7 mL |
| 1/2 cup | 54 g | 1.9 oz | 118.3 mL |
| 1/3 cup | 36 g | 1.27 oz | 78.86 mL |
| 1/4 cup | 27 g | 0.952 oz | 59.15 mL |
| 1 tbsp | 6.75 g | 0.238 oz | 14.79 mL |
| 1 tsp | 2.25 g | 0.0794 oz | 4.929 mL |
US customary measures: 1 cup = 236.59 mL, 1 tbsp = 14.79 mL, 1 tsp = 4.93 mL.
| Ingredient | Grams per cup | Ounces per cup | Density (g/mL) |
|---|---|---|---|
| Oat flour | 92 g | 3.245 oz | 0.3889 |
| Almond flour | 96 g | 3.386 oz | 0.4058 |
| Rye flour | 102 g | 3.598 oz | 0.4311 |
| Dry breadcrumbs (this page) | 108 g | 3.81 oz | 0.4565 |
| Coconut flour | 112 g | 3.951 oz | 0.4734 |
| Cake flour | 114 g | 4.021 oz | 0.4818 |
| Whole wheat flour | 120 g | 4.233 oz | 0.5072 |
Ordered by weight. The spread across this group is why a single generic cups-to-grams factor cannot work.