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CrumbCalc

How Many Grams in a Cup of Baking Soda?

1 cup of baking soda weighs 221 grams (4.6 g per tsp). Every other measure is below, in both directions.

1 cup of baking soda

221 g

≈ 7.8 oz · 4.6 g per tsp

Data & method: This figure departs from the King Arthur chart; the source it uses instead is named under “Where this number comes from” below. An automated test pins the figure to that published source. How we calculate →

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Result

221 g

Baking soda: 221 g per cup (4.6 g per tsp)

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Baking Soda: cups to grams chart

Baking soda Grams Ounces
¼ cup 55 g 1.95 oz
⅓ cup 74 g 2.6 oz
½ cup 111 g 3.9 oz
⅔ cup 147 g 5.2 oz
¾ cup 166 g 5.85 oz
1 cup 221 g 7.8 oz
1½ cups 332 g 11.69 oz
2 cups 442 g 15.59 oz
3 cups 663 g 23.39 oz
1 tablespoon 14 g 0.49 oz
1 teaspoon 4.6 g 0.16 oz

Grams to cups: baking soda

Working the other way — a recipe in grams, and cups are what you have in the drawer:

Grams of baking soda Cups (approx.)
50 g ¼ cup
100 g 0.45 cup
125 g 0.57 cup
200 g ⅞ cup
250 g 1⅛ cups
500 g 2¼ cups

Where this number comes from

Most of our weights are the King Arthur Baking chart figure, unchanged. This one is not, and it is worth saying why: USDA FoodData Central (FDC 175040, baking soda) lists 1 tsp = 4.6 g, which is 221 g per cup. King Arthur's chart lists ½ tsp = 3 g; that row is rounded to a whole gram, and doubling it to a teaspoon doubles the rounding.

Every value we don't depart on is locked to the chart by a test, and each departure is pinned to the publication it names, so this list stays short and deliberate — you can read all of them on the methodology page.

Other leavening & salt

See the full CrumbCalc ingredient weight chart →

Frequently Asked Questions

How many grams is 1 cup of baking soda?

One US cup of baking soda weighs 221 grams (about 7.8 ounces) — that is 4.6 g per tsp. USDA FoodData Central (FDC 175040, baking soda) lists 1 tsp = 4.6 g, which is 221 g per cup. King Arthur's chart lists ½ tsp = 3 g; that row is rounded to a whole gram, and doubling it to a teaspoon doubles the rounding.

How many grams is a tablespoon of baking soda?

A tablespoon of baking soda is about 14 grams, since one cup holds 16 tablespoons. A teaspoon is about 4.6 grams.

How many cups is 250 g of baking soda?

250 grams of baking soda is about 1⅛ cups (250 ÷ 221). Weighing is more reliable than measuring by cup.