Grams of skim milk to fluid ounces runs on one number, 0.032653061 fluid ounces per gram. 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.
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.
This is the pair that catches people out. A fluid ounce is a volume and an ounce is a weight, and they are only the same number for something with the density of water. One fluid ounce of skim milk weighs 1.08 oz, so the two readings differ by 8.03% — worth knowing before trusting a recipe that just says "oz".
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
grams- The amount of skim milk you are converting, in grams
0.0326530612245- Fluid Ounces per gram for skim milk, from its density of 1.0356 g/mL
fluid ounces- The equivalent quantity in fluid ounces
How it works, step by step
- Enter the quantity in grams.
- It is multiplied by 0.0326530612245, the fluid ounces-per-gram figure for skim milk.
- The result appears in fluid ounces, with a second reading in mL 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 skim milk in fluid ounces
50 g of skim milk weighs out at 1.63265 fluid ounces. Divide 1.63265 by 0.032653061 and you get back to 50 g, which is the quickest check that the factor is the right way up.
150 g of skim milk in fluid ounces
150 g of skim milk weighs out at 4.89796 fluid ounces. Divide 4.89796 by 0.032653061 and you get back to 150 g, which is the quickest check that the factor is the right way up.
500 g of skim milk in fluid ounces
A recipe calling for 500 g of skim milk needs 16.3265 fluid ounces on the scale. The arithmetic is 500 × 0.032653061 = 16.326531, and halving the recipe halves the weight to 8.16327 fluid ounces.
How to read your score
Frequently asked questions
How many fluid ounces are in 1 g of skim milk?
One gram of skim milk is 0.032653061 fluid ounces. Half that quantity is 0.0163265 fluid ounces and double it is 0.0653061 fluid ounces, 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?
A scale, if the result matters. Volume measuring carries a spread of about 1% for skim milk — roughly 2.45 g on a 245 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 3 fl oz of skim milk weigh?
3 fl oz of skim milk comes to 91.875 g, or 91.875 grams. This page runs that calculation in reverse — enter a weight and it returns the volume — and the fluid-ounces-to-grams page does it in the direction the question is usually asked.
Skim milk in grams and fluid ounces
| Grams | Fluid Ounces | Unrounded |
|---|---|---|
| 5 g | 0.163265 fl oz | 0.1632653061 |
| 10 g | 0.326531 fl oz | 0.3265306122 |
| 25 g | 0.816327 fl oz | 0.8163265306 |
| 50 g | 1.63265 fl oz | 1.632653061 |
| 100 g | 3.26531 fl oz | 3.265306122 |
| 125 g | 4.08163 fl oz | 4.081632653 |
| 150 g | 4.89796 fl oz | 4.897959184 |
| 200 g | 6.53061 fl oz | 6.530612245 |
| 250 g | 8.16327 fl oz | 8.163265306 |
| 300 g | 9.79592 fl oz | 9.795918367 |
| 500 g | 16.3265 fl oz | 16.32653061 |
| 1000 g | 32.6531 fl oz | 32.65306122 |
Based on 245 g per cup of skim milk. One gram of skim milk is 0.032653061 fluid ounces.
| 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.