How the Milk Converter Works
The Milk Converter divides milk mass by milk density. The default 1.033 kg/L fits whole cow milk at about 15°C (59°F).
Pick the milk type
Select whole, semi-skimmed, skim, goat, sheep or buffalo milk from the table below.
Enter the density
Type the matching density; dairies read it with a lactometer.
Enter the mass
Type the kilograms from the bulk tank scale or recipe.
Read the liters
The result gives the milk volume for jugs, cartons or churns.
Milk Converter Formula
The milk kg to liters formula is Liters = Kilograms ÷ 1.033 for whole milk. Fat lowers density; protein, lactose and minerals raise it.
- ρmilk
- Milk density, 1.028–1.036 kg/L
- LR
- Quevenne lactometer reading, such as 32 for 1.032 kg/L
Worked Examples
- Whole milk: 10 kg ÷ 1.033 = 9.681 L.
- Bulk tank: 5,000 kg of milk ÷ 1.032 = 4,845.0 L.
- Lactometer reading 29: density 1.029 kg/L, a sign of added water or high fat.
Milk Converter Conversion Table
1 kg of whole milk equals 0.968 liters, and 1 L of whole milk weighs 1.033 kg (2.28 lb). The table lists 7 milk types.
| Milk Type | Density (kg/L) | Liters per 1 kg | Liters per 100 kg | kg per US gal |
|---|---|---|---|---|
| Skim (0.1% fat) | 1.036 | 0.965 | 96.53 | 3.922 |
| 1% low-fat | 1.035 | 0.966 | 96.62 | 3.918 |
| 2% reduced-fat | 1.034 | 0.967 | 96.71 | 3.914 |
| Whole (3.25–3.5% fat) | 1.033 | 0.968 | 96.81 | 3.910 |
| Goat milk | 1.032 | 0.969 | 96.90 | 3.907 |
| Buffalo milk | 1.032 | 0.969 | 96.90 | 3.907 |
| Sheep milk | 1.036 | 0.965 | 96.53 | 3.922 |
What is a Milk Converter?
A Milk Converter is a calculator that changes milk weight in kilograms into volume in liters using the density of the chosen milk type.
Dairies buy milk from farmers by weight and sell milk to shoppers by volume. The Milk Converter links both figures with one density value.
Cow milk is about 87% water, 4.8% lactose, 3.4% protein, 3.5% fat and 0.7% minerals. The non-fat solids make milk heavier than water, and the fat pulls density back down.
What are the Uses of a Milk Converter?
There are 5 main uses of a Milk Converter.
Farm milk collection
Collectors convert tanker weights into liters for farmer payments.
Dairy processing
Plants plan carton and bottle runs from kilograms received.
Baby formula and feeding
Parents convert breast milk or formula weights into milliliters.
Baking recipes
Bakers convert weighed milk into cup or liter measures.
Adulteration checks
Inspectors spot watered milk by low density.