Unsulphured Molasses — Grams ↔ Cups Converter
1 US Customary cup (236.6 mL) of unsulphured molasses weighs 340 grams (11.99 ounces or 21.3g per tablespoon) when measured poured liquid; 1 Metric cup (250 mL) weighs 359.3g and 100g equals ¼ cup + 2 tsp for accurate kitchen baking.
Kitchen note: Test-kitchen baseline uses poured liquid (340g/cup). Switching to blackstrap molasses (348g/cup) changes each cup by 8g—use the packing toggle on the scale bench to match your recipe.
Molasses: Cups & Spoons to Grams
Based on 340g per 236.6 mL US cup (poured liquid).
| Volume | Grams | Ounces |
|---|---|---|
| 1 Teaspoon (tsp) | 7.1 g | 0.25 oz |
| 1 Tablespoon (tbsp) | 21.3 g | 0.75 oz |
| ⅛ US Cup (2 tbsp) | 42.5 g | 1.5 oz |
| ¼ US Cup (4 tbsp) | 85 g | 3 oz |
| ⅓ US Cup | 113.3 g | 4 oz |
| ½ US Cup (8 tbsp) | 170 g | 6 oz |
| ⅔ US Cup | 226.7 g | 8 oz |
| ¾ US Cup (12 tbsp) | 255 g | 8.99 oz |
| 1 US Cup (236.6 mL) | 340 g | 11.99 oz |
| 1 Metric Cup (250 mL) | 359.3 g | 12.67 oz |
| 1 ½ US Cups | 510 g | 17.99 oz |
| 2 US Cups | 680 g | 23.99 oz |
| 3 US Cups | 1020 g | 35.98 oz |
| 4 US Cups (1 Quart) | 1360 g | 47.97 oz |
Molasses: Grams to US Cups
Nearest practical baker cup & spoon breakdown.
| Weight | Kitchen Measure | Decimal |
|---|---|---|
| 10 g | 1 ½ tsp | 0.03 c |
| 25 g | 1 tbsp + ½ tsp | 0.07 c |
| 50 g | 2 tbsp + 1 tsp | 0.15 c |
| 75 g | 3 tbsp + 1 ½ tsp | 0.22 c |
| 100 g | ¼ cup + 2 tsp | 0.29 c |
| 125 g | ⅓ cup + 1 ¾ tsp | 0.37 c |
| 150 g | ⅓ cup + 1 tbsp + 2 ¼ tsp | 0.44 c |
| 200 g | ½ cup + 1 tbsp + 1 ¼ tsp | 0.59 c |
| 250 g | ¾ cup | 0.74 c |
| 300 g | ¾ cup + 2 tbsp + ¼ tsp | 0.88 c |
| 400 g | 1 cup + 2 tbsp + 2 ½ tsp | 1.18 c |
| 500 g | 1 ⅓ cups + 2 tbsp + ½ tsp | 1.47 c |
| 750 g | 2 cups + 3 tbsp + 1 tsp | 2.21 c |
| 1000 g | 2 ¾ cups + 3 tbsp + ¼ tsp | 2.94 c |
How to Measure Unsulphured Molasses Accurately
Slow pouring and exceptionally viscous; warm the bottle gently in warm tap water for 5 minutes before pouring for easier measurement.
Packing Density Comparison (1 US Cup)
- poured liquid (Test-kitchen standard) 340 g
- Blackstrap molasses 348 g
Data reference: USDA FoodData Central #169653 & Grandma’s Molasses specifications
Common Culinary Uses
- Gingerbread men and snaps
- Boston baked beans
- Barbecue sauces
- Pumpernickel bread loaves
Weight-Aware Substitutions
- 1:1 by weight with dark corn syrup plus a pinch of ground ginger and allspice, or equal weight dark treacle
Unsulphured Molasses Measuring FAQs
Can I swap blackstrap molasses for unsulphured baking molasses? ▾
Use caution: blackstrap is the third boiling of sugar cane, bitter, intensely robust, and less sweet than standard molasses.
Why does molasses react with baking soda in cookies? ▾
Molasses is acidic (pH around 5.0), reacting immediately with baking soda to produce carbon dioxide leavening and deep browning.