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How Much Is 12 Fluid Ounces of Molasses in Grams?

Converting 12 fluid ounces of molasses to grams gives 510.00 g. One fluid ounce of molasses weighs 42.5g, so 12 fluid ounces is 12 × 42.5 = 510g. This conversion is specific to molasses because each ingredient has a different density.

12 fluid ounces of molasses
=
510.00g
Result using all fluid ounce standards info
510.00 g (US) 489.98 g (UK Fluid Ounce)
12 fluid ounces of molasses is also
510.00

Formula and Step-by-Step

fluid ounces × 42.5g/fl oz = grams
  1. Start with 12 fluid ounces of molasses
  2. 1 fluid ounce of molasses = 42.5g
  3. 12 × 42.5 = 510g

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

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 fluid ounces measurements. Your amount (12 fluid ounces) is highlighted.

3 fl oz127.5 g4 fl oz170 g5 fl oz212.5 g6 fl oz255 g8 fl oz340 g10 fl oz425 g12 fl oz510 g16 fl oz680 g

For reference, 12 fluid ounces of molasses (510g) is close in weight to a bottle of water (500 ml) (510g).

Other Amounts of Molasses

Fluid Ounces US Grams UK Fluid Ounce
1 fluid ounce 42.50 g 40.83 g
2 fluid ounces 85.00 g 81.66 g
3 fluid ounces 127.50 g 122.49 g
4 fluid ounces 170.00 g 163.33 g
5 fluid ounces 212.50 g 204.16 g
6 fluid ounces 255.00 g 244.99 g
8 fluid ounces 340.00 g 326.65 g
10 fluid ounces 425.00 g 408.32 g
12 fluid ounces 510.00 g 489.98 g
16 fluid ounces 680.00 g 653.30 g

Understanding the Units

What is a Fluid Ounce?

The US fluid ounce (29.574 ml) and the UK fluid ounce (28.413 ml) are different sizes. The UK version is about 4% smaller. This means a UK recipe calling for 8 fl oz gives you 227 ml, while 8 US fl oz gives you 237 ml. The difference is small per ounce but adds up in larger quantities.

What is a Gram?

Weighing ingredients in grams eliminates the variability of volume measurements. A cup of flour can weigh anywhere from 120g to 160g depending on how it was scooped, but 120g of flour is always 120g of flour.

Frequently Asked Questions

About 510.00 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 fluid ounces by 42.5 (grams per fluid ounce for molasses). For 12 fluid ounces: 12 × 42.5 = 510.00 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: 510.00 g ÷ 42.5 = 12 fluid ounces. Or use the Grams to Fluid Ounces converter.