swap_horiz Need Pounds to Cups instead?

How Much Is 21.15 Cups of Molasses in Pounds?

Converting 21.15 cups of molasses to pounds gives 15.85 lb. One cup of molasses weighs 340g, so 21.15 cups is 21.15 × 340 = 7,191g (15.85 lb). This conversion is specific to molasses because each ingredient has a different density.

21.15 cups of molasses
=
15.85lb
Result using all cup standards info
15.85 lb (US) 16.75 lb (Metric Cup) 19.04 lb (Imperial Cup)
21.15 cups of molasses is also
15.85

Formula and Step-by-Step

cups × 340g/cup ÷ 453.592g/lb = pounds
  1. Start with 21.15 cups of molasses
  2. 1 cup of molasses = 340g
  3. 21.15 × 340 = 7,191g
  4. Convert grams to pounds: 7,191 ÷ 453.592 = 15.85 lb

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 (21.15 cups) is highlighted.

0.75 cups0.56 lb1 cup0.75 lb1.5 cups1.12 lb2 cups1.50 lb3 cups2.25 lb4 cups3.00 lb5 cups3.75 lb21.15 cups15.85 lb

Other Amounts of Molasses

Cups US Pounds Metric Cup Imperial Cup
0.25 cups 0.19 lb 0.20 lb 0.23 lb
0.33 cups 0.25 lb 0.26 lb 0.30 lb
0.5 cups 0.37 lb 0.40 lb 0.45 lb
0.75 cups 0.56 lb 0.59 lb 0.68 lb
1 cup 0.75 lb 0.79 lb 0.90 lb
1.5 cups 1.12 lb 1.19 lb 1.35 lb
2 cups 1.50 lb 1.58 lb 1.80 lb
3 cups 2.25 lb 2.38 lb 2.70 lb
4 cups 3.00 lb 3.17 lb 3.60 lb
5 cups 3.75 lb 3.96 lb 4.50 lb
21.15 cups 15.85 lb 16.75 lb 19.04 lb

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 Pound?

Pounds are the standard weight unit for buying ingredients in the US. A standard bag of flour is 5 pounds (2,268g) and a standard bag of sugar is 4 pounds (1,814g).

Frequently Asked Questions

About 15.85 lb, 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 453.592 to convert grams to pounds. For 21.15 cups: 21.15 × 340 = 7,191g, then 7,191 ÷ 453.592 = 15.85 lb.
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: 15.85 lb × 453.592 = 7,191g, then 7,191g ÷ 340 = 21.15 cups. Or use the Pounds to Cups converter.