Dairy Portion Equivalence Calculator
Written by Thierno Sadou Diallo, formula verified per our methodology • Last checked on 9/10/2026
A dairy portion, per the PNNS benchmark, equals 150 mL of milk, 125 g of yogurt, or 30 g of cheese. 300 mL of milk equals 2 portions.
Explanation
France's national nutrition program (PNNS) defines a dairy portion through three precise equivalences depending on the form eaten: 150 mL of milk (an average glass), 125 g of yogurt (a standard pot), or 30 g of cheese (a small portion, or roughly a handful of grated cheese). Unlike our starch portion calculator, whose PNNS reference portions are given as ranges, these three dairy equivalences are single fixed values, which makes the calculation particularly direct. The recommended consumption benchmark changes with age: 3 portions a day during childhood and adolescence (a period of rapid bone growth requiring higher calcium intake), versus 2 portions a day being sufficient in adulthood. Dairy products remain one of the main dietary sources of calcium, which directly connects this calculator to our calcium intake calculator: a portion of milk or yogurt typically provides 150 to 200 mg of calcium, roughly a sixth to a fifth of the adult recommended daily intake.
Example: 300 mL of milk
Inputs
Quantity consumed: 300 mL. Product type: milk.
Calculation
Number of portions = 300 ÷ 150 = 2.
Result
300 mL of milk equals 2 dairy portions.
Frequently asked questions
Why aren't the three equivalences (milk, yogurt, cheese) the same weight?
Because cheese is a much more concentrated source of calcium and fat than milk or yogurt, so the same amount of calcium is found in a much smaller volume or weight: 30 g of cheese provides a level of calcium comparable to 150 mL of milk, a far more diluted liquid.
Why does the benchmark drop from 3 to 2 portions a day in adulthood?
Because calcium needs are proportionally higher during childhood and adolescence, a period of rapid bone growth when the skeleton builds up most of its final mineral mass. Once growth is complete, needs level off, which justifies a slightly lower consumption benchmark in adulthood, while still being sufficient to maintain bone mass.
Do plant-based milks and yogurts count as a dairy portion?
No, soy, almond, or oat-based drinks and yogurts aren't dairy products in the strict sense and aren't generally fortified with calcium to the same level, unless explicitly labeled "calcium-fortified" on the packaging. In that case, they can be a comparable calcium alternative, but remain nutritionally different from dairy on other criteria, notably their protein content.