How the Milk Powder Converter Works
The Milk Powder Converter divides powdered milk mass by its bulk density. The default 0.55 kg/L fits regular spray-dried milk powder.
Pick the powder
Instant nonfat, regular nonfat, whole milk powder, infant formula and whey protein differ in density.
Enter the density
Use the table value; agglomerated "instant" powders are much lighter.
Enter the mass
Type the powder weight in kilograms.
Read the volume
Use the liters for tins and scoops, or reconstitute with the formula below.
Milk Powder Converter Formula
The milk powder formula is Vpowder = m ÷ ρbulk. Reconstituting 100 g of nonfat powder with water makes about 1 L of skim milk.
- ρbulk
- Bulk density of the powder, kg/L
Worked Examples
- Regular nonfat powder: 1 kg ÷ 0.55 = 1.818 L of powder.
- Instant nonfat powder: 1 kg ÷ 0.30 = 3.333 L, nearly twice the volume.
- Reconstitution: 1 kg of nonfat powder makes about 10 L of skim milk.
Milk Powder Converter Conversion Table
1 kg of regular spray-dried milk powder fills 1.818 liters. The table lists 6 dairy powders.
| Powder Type | Density (kg/L) | Grams per US cup | Liters per 1 kg | Liters per 25 kg bag |
|---|---|---|---|---|
| Instant nonfat (agglomerated) | 0.300 | 71 | 3.333 | 83.3 |
| Whey protein concentrate | 0.400 | 95 | 2.500 | 62.5 |
| Whole milk powder | 0.500 | 118 | 2.000 | 50.0 |
| Regular nonfat milk powder | 0.550 | 130 | 1.818 | 45.5 |
| Infant formula | 0.550 | 130 | 1.818 | 45.5 |
| Buttermilk powder | 0.600 | 142 | 1.667 | 41.7 |
What is a Milk Powder Converter?
A Milk Powder Converter is a calculator that converts dairy powder weight into volume using powder bulk density.
Milk powder is made by spray drying: concentrated milk is atomized into hot air at 180–220°C, and droplets dry into particles in seconds. Moisture ends below 4%.
Instant milk powder goes through agglomeration, which clumps fine particles into porous granules. The granules dissolve fast in cold water but weigh about half as much per cup.
What are the Uses of a Milk Powder Converter?
There are 4 main uses of a Milk Powder Converter.
Emergency storage
Households convert stored kilograms into liters of milk.
Bread and confectionery
Bakers add milk solids by weight and check scoop volume.
Infant feeding
Parents check how many scoops a tin holds.
Dairy exports
Exporters convert 25 kg bag counts into pallet and container volume.