Millilitres of rye flour to grams runs on one number, 0.43112879 grams per millilitre. 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.
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.
Rye flour has a density of 0.43113 g per mL, so 100 mL of it weighs 43.11 g and 250 mL weighs 107.8 g. That single figure is what every other number on this page is built from — water is 1.00 g per mL, so this ingredient is 43.11% as heavy as the same volume of water.
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.
What the number depends on: One of the lightest flours per cup. Rye has little gluten to develop, so it is almost always blended with wheat flour.
The formula
millilitres- The amount of rye flour you are converting, in millilitres
0.431128789448- Grams per millilitre for rye flour, from its density of 0.43113 g/mL
grams- The equivalent quantity in grams
How it works, step by step
- Enter the quantity in millilitres.
- It is multiplied by 0.431128789448, the grams-per-millilitre figure for rye flour.
- The result appears in grams, with a second reading in oz beneath it.
- Use the measure table if you want a standard recipe quantity rather than a number you type in.
Worked examples
15 mL of rye flour in grams
15 mL of rye flour weighs out at 6.46693 grams. Divide 6.46693 by 0.43112879 and you get back to 15 mL, which is the quickest check that the factor is the right way up.
100 mL of rye flour in grams
Take 100 mL of rye flour: 100 × 0.43112879 gives 43.1129 grams. Doubling the batch takes it to 86.2258 grams, because the relationship is a straight proportion once the density is known.
250 mL of rye flour in grams
Take 250 mL of rye flour: 250 × 0.43112879 gives 107.782 grams. Doubling the batch takes it to 215.564 grams, because the relationship is a straight proportion once the density is known.
How to read your score
Frequently asked questions
How many grams are in 1 mL of rye flour?
One millilitre of rye flour is 0.43112879 grams. Half that quantity is 0.215564 grams and double it is 0.862258 grams, 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?
At this size the spoon wins. One millilitre of rye flour is 0.4311 g, and a scale reading to the nearest gram is working at 232% resolution on that — a measuring spoon is the more accurate instrument below about 5 g, which is why spice quantities are still written in spoons.
How many millilitres of rye flour is 500 g?
500 g of rye flour is 1159.7 millilitres — 2.31949 millilitres to one gram, so 500 × 2.31949 = 1159.7. Going that way is a division by 0.431129, or a multiplication by 2.31949 if you prefer.
Rye flour in millilitres and grams
| Millilitres | Grams | Unrounded |
|---|---|---|
| 5 mL | 2.15564 g | 2.155643947 |
| 10 mL | 4.31129 g | 4.311287894 |
| 15 mL | 6.46693 g | 6.466931842 |
| 30 mL | 12.9339 g | 12.93386368 |
| 50 mL | 21.5564 g | 21.55643947 |
| 100 mL | 43.1129 g | 43.11287894 |
| 125 mL | 53.8911 g | 53.89109868 |
| 150 mL | 64.6693 g | 64.66931842 |
| 200 mL | 86.2258 g | 86.22575789 |
| 250 mL | 107.782 g | 107.7821974 |
| 500 mL | 215.564 g | 215.5643947 |
Based on 102 g per cup of rye flour. One millilitre of rye flour is 0.43112879 grams.
| 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.