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How Much Is 1 Cup of Molasses in Grams?

1 cup of molasses equals 340.00 g. Molasses has a density of 340g per cup (340g per cup), which means it's relatively heavy compared to other common cooking ingredients. For comparison, 1 cup of all-purpose flour would be 125.16 g.

1 cup of molasses
=
340.00g
Result using all cup standards info
340.00 g (US) 359.27 g (Metric Cup) 408.32 g (Imperial Cup)
1 cup of molasses is also
340.00

Formula and Step-by-Step

cups × 340g/cup = grams
  1. Start with 1 cup of molasses
  2. 1 cup of molasses = 340g
  3. 1 × 340 = 340g

The same formula works for any amount. Multiply (or divide) by the density, then convert units as needed.

Mental Math Shortcut

For 1 cup of molasses, just remember: 340g. Double it for 2 cups (680g), halve it for a half cup (170g).

Measuring Tip

For liquids, place your measuring cup on a flat surface and read at eye level. The bottom of the meniscus (the curve at the surface) should align with the measurement line.

Molasses at Different Amounts

How molasses scales across common cups measurements. Your amount (1 cup) is highlighted.

0.25 cups85 g0.33 cups112.2 g0.5 cups170 g0.75 cups255 g1 cup340 g1.5 cups510 g2 cups680 g3 cups1,020 g

For reference, 1 cup of molasses (340g) is close in weight to a can of soda (355g).

Other Amounts of Molasses

Cups US Grams Metric Cup Imperial Cup
0.25 cups 85.00 g 89.82 g 102.08 g
0.33 cups 112.20 g 118.56 g 134.75 g
0.5 cups 170.00 g 179.64 g 204.16 g
0.75 cups 255.00 g 269.46 g 306.24 g
1 cup 340.00 g 359.27 g 408.32 g
1.5 cups 510.00 g 538.91 g 612.49 g
2 cups 680.00 g 718.55 g 816.65 g
3 cups 1,020.00 g 1,077.82 g 1,224.97 g
4 cups 1,360.00 g 1,437.10 g 1,633.30 g
5 cups 1,700.00 g 1,796.37 g 2,041.62 g

Understanding the Units

What is a Cup?

In US cooking, a cup measures volume, not weight. One standard US cup holds 236.588 ml of liquid. Because different ingredients have different densities, a cup of one ingredient can weigh very differently from a cup of another.

What is a Gram?

A gram (g) is a metric unit of mass equal to 1/1000 of a kilogram. It is the standard weight measurement for precise baking worldwide. Professional bakers prefer grams because they are more accurate than volume measurements.

Frequently Asked Questions

About 340.00 g, based on molasses having a density of 340g per cup. The exact amount depends on how the ingredient is measured and the specific product.
Multiply the number of cups by 340 (grams per cup for molasses). For 1 cup: 1 × 340 = 340.00 g.
Weighing molasses on a kitchen scale is strongly recommended. It is thick and sticky, so it clings to measuring vessels. If you must measure by volume, lightly oil the measuring cup first so it slides out cleanly.
Temperature has a minimal effect on most cooking liquids. The density of molasses changes slightly with temperature, but the difference is usually less than 1-2% between refrigerator and room temperature. This conversion assumes room temperature.
Reverse the conversion: 340.00 g ÷ 340 = 1 cup. Or use the Grams to Cups converter.