To convert millilitres of skim milk into grams, multiply by 1.0355544: one millilitre comes to 1.0355544 grams. 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 — skim milk measures 1.0356 g per mL. That ratio, 103.6%, is what separates this page from every other ingredient in the same units, and it is measured rather than defined.
Skim milk has a density of 1.0356 g per mL, so 100 mL of it weighs 103.6 g and 250 mL weighs 258.9 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 103.6% 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 0.408% of a cup of skim milk, so weighing gets an accuracy no measuring cup can reach. A 500 g pack of it is 2.041 cups, and a 1 kg pack 4.082.
How the figure is arrived at: Marginally denser than whole milk, because the fat removed from it was the lightest part.
The formula
millilitres- The amount of skim milk you are converting, in millilitres
1.03555444524- Grams per millilitre for skim milk, from its density of 1.0356 g/mL
grams- The equivalent quantity in grams
How it works, step by step
- Enter the quantity in millilitres.
- It is multiplied by 1.03555444524, the grams-per-millilitre figure for skim milk.
- 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 skim milk in grams
15 mL of skim milk weighs out at 15.5333 grams. Divide 15.5333 by 1.0355544 and you get back to 15 mL, which is the quickest check that the factor is the right way up.
100 mL of skim milk in grams
A recipe calling for 100 mL of skim milk needs 103.555 grams on the scale. The arithmetic is 100 × 1.0355544 = 103.55544, and halving the recipe halves the weight to 51.7777 grams.
250 mL of skim milk in grams
A recipe calling for 250 mL of skim milk needs 258.889 grams on the scale. The arithmetic is 250 × 1.0355544 = 258.88861, and halving the recipe halves the weight to 129.444 grams.
How to read your score
Frequently asked questions
How many grams are in 1 mL of skim milk?
One millilitre of skim milk is 1.0355544 grams. Half that quantity is 0.517777 grams and double it is 2.07111 grams, so the figure scales straight up and down — there is no offset in this conversion, only the factor.
Why is a cup of skim milk not 236 g like water?
Because weight per cup depends on what is in the cup. Skim milk has a density of 1.0356 g per mL where water has 1.00, so a cup of it weighs 245 g rather than 236.6 g. That is a difference of 8.4 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?
Barely. Skim milk does not compress, so a cup of it is 245 g however it is poured — within about 1%, which is inside the accuracy of a domestic scale. This is the group where measuring by volume is defensible.
Is a fluid ounce of skim milk 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 skim milk weighs 1.08 oz, so the two readings differ by 8.03%. 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 skim milk would weigh 258.89 g instead of 245 g — 13.9 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 skim milk is 1.036 g, and a scale reading to the nearest gram is working at 96.6% 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 skim milk is 500 g?
500 g of skim milk is 482.83 millilitres — 0.965666 millilitres to one gram, so 500 × 0.965666 = 482.83. Going that way is a division by 1.03555, or a multiplication by 0.965666 if you prefer.
Skim milk in millilitres and grams
| Millilitres | Grams | Unrounded |
|---|---|---|
| 5 mL | 5.17777 g | 5.177772226 |
| 10 mL | 10.3555 g | 10.35554445 |
| 15 mL | 15.5333 g | 15.53331668 |
| 30 mL | 31.0666 g | 31.06663336 |
| 50 mL | 51.7777 g | 51.77772226 |
| 100 mL | 103.555 g | 103.5554445 |
| 125 mL | 129.444 g | 129.4443057 |
| 150 mL | 155.333 g | 155.3331668 |
| 200 mL | 207.111 g | 207.110889 |
| 250 mL | 258.889 g | 258.8886113 |
| 500 mL | 517.777 g | 517.7772226 |
Based on 245 g per cup of skim milk. One millilitre of skim milk is 1.0355544 grams.
| Measure | Grams | Ounces | Millilitres |
|---|---|---|---|
| 1 cup | 245 g | 8.64 oz | 236.6 mL |
| 3/4 cup | 183.8 g | 6.48 oz | 177.4 mL |
| 2/3 cup | 163.3 g | 5.76 oz | 157.7 mL |
| 1/2 cup | 122.5 g | 4.32 oz | 118.3 mL |
| 1/3 cup | 81.67 g | 2.88 oz | 78.86 mL |
| 1/4 cup | 61.25 g | 2.16 oz | 59.15 mL |
| 1 tbsp | 15.31 g | 0.54 oz | 14.79 mL |
| 1 tsp | 5.104 g | 0.18 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) |
|---|---|---|---|
| Half-and-half | 242 g | 8.536 oz | 1.023 |
| Egg whites | 243 g | 8.572 oz | 1.027 |
| Whole milk | 244 g | 8.607 oz | 1.031 |
| Skim milk (this page) | 245 g | 8.642 oz | 1.036 |
| Buttermilk | 245 g | 8.642 oz | 1.036 |
| Plain yogurt | 245 g | 8.642 oz | 1.036 |
| Tomato sauce | 245 g | 8.642 oz | 1.036 |
Ordered by weight. The spread across this group is why a single generic cups-to-grams factor cannot work.