To convert grams of rye flour into cups, multiply by 0.0098039216: one gram comes to 0.0098039216 cups. Every ingredient has its own figure here, because the units are measuring different things and only the density links them.
The density behind that figure is 0.43113 g per mL, against 1.00 for water. A cup of water weighs 236.6 g and a cup of rye flour weighs 102 g, so this ingredient is 43.11% as heavy as the same volume of water — the single fact the whole page rests on.
A cup of rye flour is 102 g when it is measured the standard way, but how it gets into the cup changes the answer: between about 91.8 g and 122.4 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.
Grams are the unit this conversion is really for. A domestic scale resolves to a gram, which is 0.98% of a cup of rye flour, so weighing gets an accuracy no measuring cup can reach. A 500 g pack of it is 4.902 cups, and a 1 kg pack 9.804.
How the figure is arrived at: One of the lightest flours per cup. Rye has little gluten to develop, so it is almost always blended with wheat flour.
The formula
grams- The amount of rye flour you are converting, in grams
0.00980392156863- Cups per gram for rye flour, from its density of 0.43113 g/mL
cups- The equivalent quantity in cups
How it works, step by step
- Enter the quantity in grams.
- It is multiplied by 0.00980392156863, the cups-per-gram figure for rye 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
50 g of rye flour in cups
Take 50 g of rye flour: 50 × 0.0098039216 gives 0.490196 cups. Doubling the batch takes it to 0.980392 cups, because the relationship is a straight proportion once the density is known.
150 g of rye flour in cups
A recipe calling for 150 g of rye flour needs 1.47059 cups on the scale. The arithmetic is 150 × 0.0098039216 = 1.4705882, and halving the recipe halves the weight to 0.735294 cups.
500 g of rye flour in cups
A recipe calling for 500 g of rye flour needs 4.90196 cups on the scale. The arithmetic is 500 × 0.0098039216 = 4.9019608, and halving the recipe halves the weight to 2.45098 cups.
How to read your score
Frequently asked questions
How many cups are in 1 g of rye flour?
One gram of rye flour is 0.0098039216 cups. Half that quantity is 0.00490196 cups and double it is 0.0196078 cups, so the figure scales straight up and down — there is no offset in this conversion, only the factor.
Why is a cup of rye flour not 236 g like water?
Because weight per cup depends on what is in the cup. Rye flour has a density of 0.43113 g per mL where water has 1.00, so a cup of it weighs 102 g rather than 236.6 g. That is a difference of 134.6 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 rye flour by roughly 20% — about 10.2 g either side of 102 g — because one of the lightest flours per cup. Weighing removes the question entirely.
Is a fluid ounce of rye 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 rye flour weighs 0.4497 oz, so the two readings differ by 55%. 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 rye flour would weigh 107.78 g instead of 102 g — 5.78 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 rye flour — roughly 20.4 g on a 102 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 rye flour weigh?
2 cup of rye flour comes to 204 g, or 204 grams. This page runs that calculation in reverse — enter a weight and it returns the volume — and the cups-to-grams page does it in the direction the question is usually asked.
Rye flour in grams and cups
| Grams | Cups | Unrounded |
|---|---|---|
| 5 g | 0.0490196 cup | 0.04901960784 |
| 10 g | 0.0980392 cup | 0.09803921569 |
| 25 g | 0.245098 cup | 0.2450980392 |
| 50 g | 0.490196 cup | 0.4901960784 |
| 100 g | 0.980392 cup | 0.9803921569 |
| 125 g | 1.22549 cup | 1.225490196 |
| 150 g | 1.47059 cup | 1.470588235 |
| 200 g | 1.96078 cup | 1.960784314 |
| 250 g | 2.45098 cup | 2.450980392 |
| 300 g | 2.94118 cup | 2.941176471 |
| 500 g | 4.90196 cup | 4.901960784 |
| 1000 g | 9.80392 cup | 9.803921569 |
Based on 102 g per cup of rye flour. One gram of rye flour is 0.0098039216 cups.
| Measure | Grams | Ounces | Millilitres |
|---|---|---|---|
| 1 cup | 102 g | 3.6 oz | 236.6 mL |
| 3/4 cup | 76.5 g | 2.7 oz | 177.4 mL |
| 2/3 cup | 68 g | 2.4 oz | 157.7 mL |
| 1/2 cup | 51 g | 1.8 oz | 118.3 mL |
| 1/3 cup | 34 g | 1.2 oz | 78.86 mL |
| 1/4 cup | 25.5 g | 0.899 oz | 59.15 mL |
| 1 tbsp | 6.375 g | 0.225 oz | 14.79 mL |
| 1 tsp | 2.125 g | 0.075 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) |
|---|---|---|---|
| Rolled oats | 90 g | 3.175 oz | 0.3804 |
| Oat flour | 92 g | 3.245 oz | 0.3889 |
| Almond flour | 96 g | 3.386 oz | 0.4058 |
| Rye flour (this page) | 102 g | 3.598 oz | 0.4311 |
| 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 |
Ordered by weight. The spread across this group is why a single generic cups-to-grams factor cannot work.