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How Much Is 1 Cup of Molasses in Ounces?

1 cup of molasses equals 11.99 oz. 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 4.41 oz.

1 cup of molasses
=
11.99oz
Result using all cup standards info
11.99 oz (US) 12.67 oz (Metric Cup) 14.40 oz (Imperial Cup)
1 cup of molasses is also
11.99

Formula and Step-by-Step

cups × 340g/cup ÷ 28.3495g/oz = ounces
  1. Start with 1 cup of molasses
  2. 1 cup of molasses = 340g
  3. 1 × 340 = 340g
  4. Convert grams to ounces: 340 ÷ 28.3495 = 11.99 oz

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

Measuring Tip

Sticky liquids like molasses are easier to measure if you lightly oil the measuring cup first. The liquid will slide out cleanly.

Molasses at Different Amounts

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

0.25 cups3.00 oz0.33 cups3.96 oz0.5 cups6.00 oz0.75 cups8.99 oz1 cup11.99 oz1.5 cups17.99 oz2 cups23.99 oz3 cups35.98 oz

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

Other Amounts of Molasses

Cups US Ounces Metric Cup Imperial Cup
0.25 cups 3.00 oz 3.17 oz 3.60 oz
0.33 cups 3.96 oz 4.18 oz 4.75 oz
0.5 cups 6.00 oz 6.34 oz 7.20 oz
0.75 cups 8.99 oz 9.50 oz 10.80 oz
1 cup 11.99 oz 12.67 oz 14.40 oz
1.5 cups 17.99 oz 19.01 oz 21.60 oz
2 cups 23.99 oz 25.35 oz 28.81 oz
3 cups 35.98 oz 38.02 oz 43.21 oz
4 cups 47.97 oz 50.69 oz 57.61 oz
5 cups 59.97 oz 63.37 oz 72.02 oz

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 an Ounce?

An ounce (oz) is a US customary unit of weight equal to 28.3495 grams or 1/16 of a pound. In cooking, "ounces" refers to weight (avoirdupois ounces), not fluid ounces which measure volume.

Frequently Asked Questions

About 11.99 oz, 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), then divide by 28.3495 to convert grams to ounces. For 1 cup: 1 × 340 = 340g, then 340 ÷ 28.3495 = 11.99 oz.
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: 11.99 oz × 28.3495 = 340g, then 340g ÷ 340 = 1 cup. Or use the Ounces to Cups converter.