40 ml to Grams

40 ml to grams depends on density. For water, 40 ml equals 40g. For dry and sticky ingredients, use the ingredient-specific chart below.

40 ml in Grams by Ingredient

Ingredient	Grams	Density note
water	40g	1 ml water is 1 gram at kitchen precision.
whole milk	41.2g	Milk is slightly denser than water.
all-purpose flour	21.16g	Spoon & Level flour; scooping can be heavier.
granulated sugar	33.8g	Granulated sugar is much denser than flour.
butter	38.36g	Solid butter, before melting.
cooked white rice	26.72g	Fluffed cooked rice; packing changes the weight.
honey	56.8g	Honey is denser than water and milk.

40 ml of water is 40 grams at kitchen precision because water is 1 g/ml.

Milliliters measure volume and grams measure weight. Water is 1 g/ml, but flour, sugar, butter, rice, milk, and honey have different densities.

Multiply 40 ml by the ingredient density. For all-purpose flour at 0.529 g/ml, 40 ml is about 21.16g.