Ounces of whole wheat flour to cups runs on one number, 0.23624603 cups per ounce. It is a measured property of this ingredient rather than a defined conversion, which is why a generic volume-to-weight tool cannot give you it.
Water is the yardstick: 1 mL of it weighs 1 g. Whole wheat flour comes in at 0.50721 g per mL, or 50.72% of water, which is why a cup of it is 120 g rather than 236.6 g. Volume and weight only line up for water, and only in metric.
A cup of whole wheat flour is 120 g when it is measured the standard way, but how it gets into the cup changes the answer: between about 108 g and 144 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 whole wheat flour is 4.233 oz. US kitchen scales usually step in eighths of an ounce, which is 3.54 g — around 2.95% 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.
What the number depends on: The bran and germ are bulkier than the endosperm they replace, so a cup weighs less than white flour despite feeling coarser.
The formula
ounces- The amount of whole wheat flour you are converting, in ounces
0.236246026042- Cups per ounce for whole wheat flour, from its density of 0.50721 g/mL
cups- The equivalent quantity in cups
How it works, step by step
- Enter the quantity in ounces.
- It is multiplied by 0.236246026042, the cups-per-ounce figure for whole wheat flour.
- 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 whole wheat flour in cups
Take 2 oz of whole wheat flour: 2 × 0.23624603 gives 0.472492 cups. Doubling the batch takes it to 0.944984 cups, because the relationship is a straight proportion once the density is known.
4 oz of whole wheat flour in cups
A recipe calling for 4 oz of whole wheat flour needs 0.944984 cups on the scale. The arithmetic is 4 × 0.23624603 = 0.9449841, and halving the recipe halves the weight to 0.472492 cups.
12 oz of whole wheat flour in cups
Take 12 oz of whole wheat flour: 12 × 0.23624603 gives 2.83495 cups. Doubling the batch takes it to 5.6699 cups, because the relationship is a straight proportion once the density is known.
How to read your score
Frequently asked questions
How many cups are in 1 oz of whole wheat flour?
One ounce of whole wheat flour is 0.23624603 cups. Half that quantity is 0.118123 cups and double it is 0.472492 cups, so the figure scales straight up and down — there is no offset in this conversion, only the factor.
Why is a cup of whole wheat flour not 236 g like water?
Because weight per cup depends on what is in the cup. Whole wheat flour has a density of 0.50721 g per mL where water has 1.00, so a cup of it weighs 120 g rather than 236.6 g. That is a difference of 116.6 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 whole wheat flour by roughly 20% — about 12 g either side of 120 g — because the bran and germ are bulkier than the endosperm they replace, so a cup weighs less than white flour despite feeling coarser. Weighing removes the question entirely.
Is a fluid ounce of whole wheat flour 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 whole wheat flour weighs 0.5291 oz, so the two readings differ by 47.1%. 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 whole wheat flour would weigh 126.8 g instead of 120 g — 6.8 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 whole wheat flour — roughly 24 g on a 120 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 whole wheat flour weigh?
2 cup of whole wheat flour comes to 240 g, or 8.4658 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.
Whole wheat flour in ounces and cups
| Ounces | Cups | Unrounded |
|---|---|---|
| 1/2 oz | 0.118123 cup | 0.118123013 |
| 1 oz | 0.236246 cup | 0.236246026 |
| 2 oz | 0.472492 cup | 0.4724920521 |
| 3 oz | 0.708738 cup | 0.7087380781 |
| 4 oz | 0.944984 cup | 0.9449841042 |
| 6 oz | 1.41748 cup | 1.417476156 |
| 8 oz | 1.88997 cup | 1.889968208 |
| 12 oz | 2.83495 cup | 2.834952313 |
| 16 oz | 3.77994 cup | 3.779936417 |
Based on 120 g per cup of whole wheat flour. One ounce of whole wheat flour is 0.23624603 cups.
| Measure | Grams | Ounces | Millilitres |
|---|---|---|---|
| 1 cup | 120 g | 4.23 oz | 236.6 mL |
| 3/4 cup | 90 g | 3.17 oz | 177.4 mL |
| 2/3 cup | 80 g | 2.82 oz | 157.7 mL |
| 1/2 cup | 60 g | 2.12 oz | 118.3 mL |
| 1/3 cup | 40 g | 1.41 oz | 78.86 mL |
| 1/4 cup | 30 g | 1.06 oz | 59.15 mL |
| 1 tbsp | 7.5 g | 0.265 oz | 14.79 mL |
| 1 tsp | 2.5 g | 0.0882 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) |
|---|---|---|---|
| Dry breadcrumbs | 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 (this page) | 120 g | 4.233 oz | 0.5072 |
| Tapioca starch | 120 g | 4.233 oz | 0.5072 |
| Powdered sugar | 120 g | 4.233 oz | 0.5072 |
| All-purpose flour | 125 g | 4.409 oz | 0.5283 |
Ordered by weight. The spread across this group is why a single generic cups-to-grams factor cannot work.