Ingredient Weight Converter

Ingredient Weight Converter · sweetener

Molasses: cups to grams

1 cup of molasses weighs 337 grams. Use the converter below for any other amount, or check the quick-reference table.

Molasses baseline: 1 cup = 337 g.

Common amounts

CupsTablespoonsGramsOunces (weight)Milliliters
1/4 cup4.084 g2.97 oz59 mL
1/3 cup5.3112 g3.96 oz79 mL
1/2 cup8.0169 g5.94 oz118 mL
2/3 cup10.7225 g7.93 oz158 mL
3/4 cup12.0253 g8.92 oz177 mL
1 cup16.0337 g11.89 oz237 mL
1.5 cups24.0506 g17.83 oz355 mL
2 cups32.0674 g23.77 oz473 mL
3 cups48.01011 g35.66 oz710 mL
4 cups64.01348 g47.55 oz946 mL

Why measuring molasses by cup goes wrong

Molasses is the dark, mineral-rich syrup left after sugar has been crystallized out of cane juice. Unsulphured molasses is the baking standard. A cup weighs 337 grams. Blackstrap molasses is the third extraction — bitter, intensely flavored, and best reserved for gingerbread that wants to taste like winter.

Practical tips for working with molasses

To measure molasses without losing half to the side of the cup, oil the measuring cup first or warm the molasses jar in a bowl of hot water for a minute. The thinner viscosity releases cleanly. Always scrape the rubber spatula into the bowl — that last clinging tablespoon is roughly 20 grams of sugar that matters.

Note from this ingredient's record: Use unsulphured for baking. Blackstrap is bitter and meant for gingerbread that wants a strong mineral note, not for cookies.

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