To convert grams of steel-cut oats into millilitres, multiply by 1.4786765: one gram comes to 1.4786765 millilitres. Every ingredient has its own figure here, because the units are measuring different things and only the density links them.
Put next to water — 1 g per mL exactly — steel-cut oats measures 0.67628 g per mL. That ratio, 67.63%, is what separates this page from every other ingredient in the same units, and it is measured rather than defined.
Steel-cut oats has a density of 0.67628 g per mL, so 100 mL of it weighs 67.63 g and 250 mL weighs 169.1 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 67.63% 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 0.625% of a cup of steel-cut oats, so weighing gets an accuracy no measuring cup can reach. A 500 g pack of it is 3.125 cups, and a 1 kg pack 6.25.
What the number depends on: Cut rather than rolled, so the pieces are dense and pack far tighter than flakes of the same grain.
The formula
grams- The amount of steel-cut oats you are converting, in grams
1.47867647812- Millilitres per gram for steel-cut oats, from its density of 0.67628 g/mL
millilitres- The equivalent quantity in millilitres
How it works, step by step
- Enter the quantity in grams.
- It is multiplied by 1.47867647812, the millilitres-per-gram figure for steel-cut oats.
- The result appears in millilitres, with a second reading in tsp 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 steel-cut oats in millilitres
Take 50 g of steel-cut oats: 50 × 1.4786765 gives 73.9338 millilitres. Doubling the batch takes it to 147.868 millilitres, because the relationship is a straight proportion once the density is known.
150 g of steel-cut oats in millilitres
150 g of steel-cut oats weighs out at 221.801 millilitres. Divide 221.801 by 1.4786765 and you get back to 150 g, which is the quickest check that the factor is the right way up.
500 g of steel-cut oats in millilitres
500 g of steel-cut oats weighs out at 739.338 millilitres. Divide 739.338 by 1.4786765 and you get back to 500 g, which is the quickest check that the factor is the right way up.
How to read your score
Frequently asked questions
How many millilitres are in 1 g of steel-cut oats?
One gram of steel-cut oats is 1.4786765 millilitres. Half that quantity is 0.739338 millilitres and double it is 2.95735 millilitres, so the figure scales straight up and down — there is no offset in this conversion, only the factor.
Why is a cup of steel-cut oats not 236 g like water?
Because weight per cup depends on what is in the cup. Steel-cut oats has a density of 0.67628 g per mL where water has 1.00, so a cup of it weighs 160 g rather than 236.6 g. That is a difference of 76.6 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 steel-cut oats by roughly 20% — about 16 g either side of 160 g — because cut rather than rolled, so the pieces are dense and pack far tighter than flakes of the same grain. Weighing removes the question entirely.
Is a fluid ounce of steel-cut oats 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 steel-cut oats weighs 0.7055 oz, so the two readings differ by 29.5%. 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 steel-cut oats would weigh 169.07 g instead of 160 g — 9.07 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 steel-cut oats is 0.6763 g, and a scale reading to the nearest gram is working at 148% 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 much does 15 mL of steel-cut oats weigh?
15 mL of steel-cut oats comes to 10.144 g, or 10.144 grams. This page runs that calculation in reverse — enter a weight and it returns the volume — and the ml-to-grams page does it in the direction the question is usually asked.
Steel-cut oats in grams and millilitres
| Grams | Millilitres | Unrounded |
|---|---|---|
| 5 g | 7.39338 mL | 7.393382391 |
| 10 g | 14.7868 mL | 14.78676478 |
| 25 g | 36.9669 mL | 36.96691195 |
| 50 g | 73.9338 mL | 73.93382391 |
| 100 g | 147.868 mL | 147.8676478 |
| 125 g | 184.835 mL | 184.8345598 |
| 150 g | 221.801 mL | 221.8014717 |
| 200 g | 295.735 mL | 295.7352956 |
| 250 g | 369.669 mL | 369.6691195 |
| 300 g | 443.603 mL | 443.6029434 |
| 500 g | 739.338 mL | 739.3382391 |
| 1000 g | 1478.68 mL | 1478.676478 |
Based on 160 g per cup of steel-cut oats. One gram of steel-cut oats is 1.4786765 millilitres.
| Measure | Grams | Ounces | Millilitres |
|---|---|---|---|
| 1 cup | 160 g | 5.64 oz | 236.6 mL |
| 3/4 cup | 120 g | 4.23 oz | 177.4 mL |
| 2/3 cup | 106.7 g | 3.76 oz | 157.7 mL |
| 1/2 cup | 80 g | 2.82 oz | 118.3 mL |
| 1/3 cup | 53.33 g | 1.88 oz | 78.86 mL |
| 1/4 cup | 40 g | 1.41 oz | 59.15 mL |
| 1 tbsp | 10 g | 0.353 oz | 14.79 mL |
| 1 tsp | 3.333 g | 0.118 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) |
|---|---|---|---|
| Graham cracker crumbs | 142 g | 5.009 oz | 0.6002 |
| Rice flour | 158 g | 5.573 oz | 0.6678 |
| Potato starch | 160 g | 5.644 oz | 0.6763 |
| Steel-cut oats (this page) | 160 g | 5.644 oz | 0.6763 |
| Semolina | 167 g | 5.891 oz | 0.7059 |
| Uncooked quinoa | 170 g | 5.997 oz | 0.7185 |
| Dry couscous | 170 g | 5.997 oz | 0.7185 |
Ordered by weight. The spread across this group is why a single generic cups-to-grams factor cannot work.