All ingredient weights
Sugars & syrups

Molasses: weights & conversions

A US cup of molasses weighs about 337 g. 100 g is 290 calories and 0 g of protein.

Also written as: blackstrap molasses.

Convert any amount

Not one of the amounts below? Type your own and convert it instantly.

1 cup of molasses is about 337 grams.

Cups to grams

What each measure of molasses weighs, from the cup weight above.

molasses volume conversions
VolumeGramsOunces
1 cup337 g11.9 oz
3/4 cup253 g
2/3 cup225 g
1/2 cup169 g
1/3 cup112 g
1/4 cup84.3 g
1 tablespoon21.1 g
1 teaspoon7.02 g

Ounces and pounds

The weights an older recipe card is most likely to use.

molasses weight conversions
WeightGramsOunces
1 oz28.3 g
4 oz (1/4 lb)113 g
8 oz (1/2 lb)227 g
1 lb454 g
100 g100 g

Nutrition

Per 100 g of edible portion, transcribed from USDA reference data, and scaled to the measures above.

Nutrition for molasses by measure
MeasureCaloriesProteinFatCarbsFiberSodium
Per 100 g (100 g)2900 g0.1 g74.7 g0 g37 mg
Per cup (337 g)9770 g0.34 g252 g0 g125 mg
Per tablespoon (21.1 g)610 g0.02 g15.7 g0 g8 mg
Per 4 oz (113 g)3290 g0.11 g84.7 g0 g42 mg

Using molasses in a recipe?

This page gives you the ingredient weight. Keep the whole recipe, its original card and your notes together in a family cookbook you can cook from again. When the ingredients can be measured reliably, you can also see nutrition per serving.

Start your family cookbook

Create an account, then add the recipe you are measuring.

Measuring from a handwritten card? Scan it free and keep the handwriting with the recipe.

Cook with brown sugarMonkey BreadRead this free recipe →

If you have run out

  • Dark corn syrup or honey, measure for measure.

Common questions

How many grams are in a cup of molasses?
One US cup of molasses weighs about 337 g (11.9 oz). A tablespoon is about 21.1 g and a teaspoon about 7.02 g.
How many cups is 100 g of molasses?
100 g of molasses is about 0.3 cups — near enough to 1/4 of a cup in a measuring cup.
How many calories are in molasses?
Molasses has about 290 calories per 100 g, which works out to roughly 977 calories a cup.
What can I use instead of molasses?
Dark corn syrup or honey, measure for measure.

More from sugars & syrups