Litres of whole milk to kilograms runs on one number, 1.0313277 kilograms per litre. 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 1.0313 g per mL, against 1.00 for water. A cup of water weighs 236.6 g and a cup of whole milk weighs 244 g, so this ingredient is 103.1% as heavy as the same volume of water — the single fact the whole page rests on.
A litre of whole milk weighs 1.0313 kg, because its density is 1.0313 kg per litre. Litres and kilograms are the units this ingredient is actually bought in at any scale beyond a single recipe, which is what makes this the useful conversion for batch cooking and for costing.
A kilogram of whole milk is 4.098 cups, and a 500 g pack is 2.049 cups. Metric pack sizes are round numbers in weight and awkward ones in volume, which is the practical argument for scaling a recipe by weight: 2.049 cups is a measurement you have to count out, 500 g is one you read off.
The condition this weight assumes: About 87% water, with dissolved sugars and protein making up the rest — which is what puts it just above water in density.
The formula
litres- The amount of whole milk you are converting, in litres
1.03132769241- Kilograms per litre for whole milk, from its density of 1.0313 g/mL
kilograms- The equivalent quantity in kilograms
How it works, step by step
- Enter the quantity in litres.
- It is multiplied by 1.03132769241, the kilograms-per-litre figure for whole milk.
- The result appears in kilograms, with a second reading in lb beneath it.
- Use the measure table if you want a standard recipe quantity rather than a number you type in.
Worked examples
1/2 L of whole milk in kilograms
1/2 L of whole milk weighs out at 0.515664 kilograms. Divide 0.515664 by 1.0313277 and you get back to 1/2 L, which is the quickest check that the factor is the right way up.
1 L of whole milk in kilograms
1 L of whole milk weighs out at 1.03133 kilograms. Divide 1.03133 by 1.0313277 and you get back to 1 L, which is the quickest check that the factor is the right way up.
2 L of whole milk in kilograms
A recipe calling for 2 L of whole milk needs 2.06266 kilograms on the scale. The arithmetic is 2 × 1.0313277 = 2.0626554, and halving the recipe halves the weight to 1.03133 kilograms.
How to read your score
Frequently asked questions
How many kilograms are in 1 L of whole milk?
One litre of whole milk is 1.0313277 kilograms. Half that quantity is 0.515664 kilograms and double it is 2.06266 kilograms, so the figure scales straight up and down — there is no offset in this conversion, only the factor.
Why is a cup of whole milk not 236 g like water?
Because weight per cup depends on what is in the cup. Whole milk has a density of 1.0313 g per mL where water has 1.00, so a cup of it weighs 244 g rather than 236.6 g. That is a difference of 7.4 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. Whole milk does not compress, so a cup of it is 244 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 whole 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 whole milk weighs 1.076 oz, so the two readings differ by 7.59%. 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 whole milk would weigh 257.83 g instead of 244 g — 13.8 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 whole milk — roughly 2.44 g on a 244 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 many litres of whole milk is 1 kg?
1 kg of whole milk is 0.96962 litres — 0.969624 litres to one kilogram, so 1 × 0.969624 = 0.96962. Going that way is a division by 1.03133, or a multiplication by 0.969624 if you prefer.
Whole milk in litres and kilograms
| Litres | Kilograms | Unrounded |
|---|---|---|
| 0.1 L | 0.103133 kg | 0.1031327692 |
| 1/4 L | 0.257832 kg | 0.2578319231 |
| 1/2 L | 0.515664 kg | 0.5156638462 |
| 3/4 L | 0.773496 kg | 0.7734957693 |
| 1 L | 1.03133 kg | 1.031327692 |
| 1 1/2 L | 1.54699 kg | 1.546991539 |
| 2 L | 2.06266 kg | 2.062655385 |
| 3 L | 3.09398 kg | 3.093983077 |
Based on 244 g per cup of whole milk. One litre of whole milk is 1.0313277 kilograms.
| Measure | Grams | Ounces | Millilitres |
|---|---|---|---|
| 1 cup | 244 g | 8.61 oz | 236.6 mL |
| 3/4 cup | 183 g | 6.46 oz | 177.4 mL |
| 2/3 cup | 162.7 g | 5.74 oz | 157.7 mL |
| 1/2 cup | 122 g | 4.3 oz | 118.3 mL |
| 1/3 cup | 81.33 g | 2.87 oz | 78.86 mL |
| 1/4 cup | 61 g | 2.15 oz | 59.15 mL |
| 1 tbsp | 15.25 g | 0.538 oz | 14.79 mL |
| 1 tsp | 5.083 g | 0.179 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) |
|---|---|---|---|
| Tahini | 240 g | 8.466 oz | 1.014 |
| Half-and-half | 242 g | 8.536 oz | 1.023 |
| Egg whites | 243 g | 8.572 oz | 1.027 |
| Whole milk (this page) | 244 g | 8.607 oz | 1.031 |
| Skim milk | 245 g | 8.642 oz | 1.036 |
| Buttermilk | 245 g | 8.642 oz | 1.036 |
| Plain yogurt | 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.