Baking Soda
Metric Cup to Gram
US Cup (236ml)
220.0g
Metric Cup (250ml)
232.5g
A US cup (236.59ml) of baking soda weighs 220g, while a metric cup (250ml) weighs 233g. That's a 5.7% difference - make sure you know which cup size your recipe uses!
Baking Soda — Quick Reference
Common metric cup to gram conversions
| Metric Cup | Gram |
|---|---|
| ¼ cup | 58g |
| ⅓ cup | 77g |
| ½ cup | 116g |
| ⅔ cup | 155g |
| ¾ cup | 174g |
| 1 cup | 233g |
| 1½ cups | 349g |
| 2 cups | 465g |
Based on baking soda density of 0.93 g/ml (spooned method). Source: USDA FoodData Central.
Understanding Baking Soda Conversions
The Math Behind This Conversion
To convert 1 metric cup of baking soda to gram, we use the density of baking soda (0.93 g/ml). A metric cup contains 250ml, so 1 metric cup equals 250ml. Multiplying by the density: 250ml × 0.93 g/ml = 232.5g.
US vs Metric Cups: Why It Matters
When converting baking soda, the cup size matters significantly. A US cup (236.6ml) of baking soda weighs 220g, while a metric cup (250ml) weighs 233g—a difference of 12g (6%). If you're following a recipe from a different country, using the wrong cup size could affect your results. American recipes use US cups, while recipes from Australia, UK, and most other countries use metric cups.
Measurement Tip
Baking Soda is a high-impact ingredient—even small measurement errors can significantly affect your baking. Always use proper measuring spoons (not regular cutlery) and level off with a straight edge. Too much baking soda can cause over-rising and collapse, while too little results in dense baked goods.
About Our Data
The density value of 0.93 g/ml for baking soda is from the USDA FoodData Central database (ID: 175040). This measurement was taken with baking soda spooned into the measuring cup and leveled.