Pantry Staple • Leavening Agent

Grams of Baking Soda
to Cups

1 US cup of baking soda = 220 grams (spoon and level into a dry measuring cup). Because baking soda is used in small quantities — typically ¼ to 1 teaspoon per recipe — even small measurement errors matter.

Baking soda (bicarbonate of soda) is 3–4× stronger than baking powder and requires an acid in the recipe to activate. Always measure by teaspoon for accuracy, not by cup.

Vegan Gluten-Free Keto-Compatible
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Critical tip: Baking soda and baking powder are NOT interchangeable 1:1. Baking soda is ∼3× stronger — using too much creates a soapy, bitter taste. Always check which one your recipe calls for.
Quick Reference
1 tsp (approx 6g)0.027 cups
1 tbsp (approx 18g)0.082 cups
50g baking soda0.23 cups
100g baking soda0.45 cups
1 US Cup = 220g
Live Tool

Baking Soda Grams to Cups Calculator

Enter any gram amount for an instant conversion. Use the quick-pick buttons for the most common baking amounts.

g
Decimal places
Baking soda density: 220g per US cup (spoon-and-level). Recipes call for teaspoons — 1 tsp ≈ 6g. To weigh precisely, use 6g per teaspoon as your reference.
Result
1.00
US cups
16.00
Tablespoons
48.00
Teaspoons
7.76
Ounces (wt)
Volume (ml)
220g ÷ 220 g/cup = 1.00 cups
Baking soda (bicarbonate of soda) • 220g per US cup • Spoon-and-level
Reference Table

Baking Soda Grams to Cups — Full Table

Common baking amounts converted from grams to cups, tablespoons, teaspoons, and ounces. All values based on 220g per US cup.

GramsCupsTablespoonsTeaspoonsOunces (wt)
3g0.014 cups0.22 tbsp0.68 tsp0.11 oz
6g (1 tsp)0.027 cups0.44 tbsp1.33 tsp0.21 oz
12g (2 tsp)0.055 cups0.87 tbsp2.62 tsp0.42 oz
18g (1 tbsp) Common0.082 cups1.31 tbsp3.93 tsp0.63 oz
25g0.114 cups1.82 tbsp5.47 tsp0.88 oz
50g0.23 cups3.64 tbsp10.9 tsp1.76 oz
100g0.45 cups7.27 tbsp21.8 tsp3.53 oz
150g0.68 cups10.9 tbsp32.7 tsp5.29 oz
220g (1 cup) Baseline1.00 cups16.00 tbsp48.0 tsp7.76 oz
300g1.36 cups21.8 tbsp65.5 tsp10.6 oz
500g2.27 cups36.4 tbsp109 tsp17.6 oz

Baking soda (bicarbonate of soda), spoon-and-level into a dry measuring cup, 220g per US cup. In practice, recipes use teaspoons: 1 tsp ≈ 6g.

Top Searches

Most-Searched Baking Soda Amounts

Direct answers for the most commonly looked-up baking soda conversions.

1 teaspoon baking soda in grams

6g

Standard amount for most cookie, cake, and quick bread recipes. Always level the teaspoon for consistency.

1/2 teaspoon baking soda in grams

3g

Used in smaller batches and recipes that have moderate acidity. Common in muffin and pancake recipes.

1 tablespoon baking soda in grams

18g

Unusually large amount — typically used in commercial quantities or non-baking applications.

100g baking soda to cups

0.45

Used in large-batch baking or cleaning applications. In baking, this would leaven 16–20 cups of flour.

1/4 teaspoon baking soda in grams

1.5g

Minimum effective amount for light leavening. Common in chocolate chip cookies and banana bread.

2 teaspoons baking soda in grams

12g

Used in large loaves of soda bread or big-batch pancakes with plenty of buttermilk to activate.

Key Distinction

Baking Soda vs Baking Powder — The Critical Difference

The most common measuring mistake in baking. These two products look identical in a white powder but work completely differently.

S
Baking Soda
220g per cup
  • Pure sodium bicarbonate — 100% active ingredient
  • 3–4× stronger than baking powder
  • Requires an acid (buttermilk, yogurt, vinegar, brown sugar) to activate
  • Reacts immediately when wet — bake without delay
  • Too much = soapy, metallic, bitter aftertaste
P
Baking Powder
~230g per cup
  • Baking soda + dry acid (cream of tartar) + starch
  • Milder — needs more per cup of flour
  • Double-acting: reacts once when wet, again in oven heat
  • No separate acid needed in the recipe
  • Too much = bitter taste and collapse in center
Productg/cupPer 1 cup flourNeeds acid?Best used in
Baking Soda This page220g1/4 tsp (1.5g)YesButtermilk pancakes, soda bread, cookies with brown sugar
Baking Powder~230g1 tsp (4.6g)NoCakes, muffins, biscuits, scones
Self-Rising Flour~120gBuilt in (1.5 tsp/cup)NoQuick breads, biscuits, pancakes — follow recipe exactly

The safe substitution rule: Replace 1 tsp baking soda with 3 tsp baking powder (and omit any separate acid). In the other direction, replace 1 tsp baking powder with ¼ tsp baking soda plus ½ tsp cream of tartar. Never swap 1:1 — you will ruin the recipe.

Technique

How to Measure Baking Soda Accurately

Baking soda can compact and clump. Getting the measurement right is essential — even a half-teaspoon too much produces a bitter aftertaste.

1

Use measuring spoons, not a kitchen scale for small amounts

For teaspoon-level quantities, measuring spoons are practical and sufficiently accurate. A digital scale becomes useful above 10g (about 1⅔ tsp).

2

Stir or whisk baking soda before measuring

Baking soda can form hard lumps from moisture. Always stir or break it up before scooping. Lumps can cause uneven leavening.

3

Scoop and level with a straight edge

Dip the measuring spoon into the baking soda, then level off with a straight knife edge. Do not pack or tap. Overfilling by even a small amount produces off-flavors.

4

Test for freshness before using

Add ¼ tsp to 2 tbsp of hot water. If it bubbles vigorously, it's active. Weak bubbling means it's lost potency — replace it. Fresh baking soda is typically good for 6 months once opened.

Precision Matters

Why Baking Soda Measurement Matters

Baking soda is one of the few ingredients where tiny errors cause detectable flavour and texture problems.

01
Too much = bitter, soapy taste
Excess baking soda leaves unreacted bicarbonate that creates a metallic, soapy aftertaste. This is the most common baking mistake with baking soda.
02
Too little = dense, under-risen result
Insufficient baking soda means insufficient gas production. Your baked goods won't rise properly and will be dense and gummy.
03
Acid balance is critical
Baking soda only activates in the presence of acid. If your recipe has less acid than expected, increase baking powder instead of adding more soda.
04
It expires and loses potency
Old baking soda is a common cause of flat baked goods. Test it before using (hot water bubble test) and replace if it's been open more than 6 months.
FAQ

Baking Soda — Frequently Asked Questions

1 level teaspoon of baking soda weighs approximately 6 grams. This is the most common recipe amount — most cookie, cake, and banana bread recipes call for ¼ to 1 teaspoon. If your recipe is in grams, 6g = 1 tsp is the conversion to use.
Yes, but the ratio is 1:3 — use 3 teaspoons of baking powder for every 1 teaspoon of baking soda the recipe calls for. Also omit or reduce any separate acid (buttermilk, vinegar, lemon juice). In reverse: ¼ tsp baking soda + ½ tsp cream of tartar replaces 1 tsp baking powder.
In the UK, baking soda is called bicarbonate of soda (or bicarb). It is chemically identical to US baking soda — same product, same use, same weight. 1 tsp UK bicarb = 1 tsp US baking soda = approximately 6g. UK teaspoons and US teaspoons are the same volume (5ml).
Add ¼ teaspoon of baking soda to 2 tablespoons of white vinegar or hot water. If it bubbles vigorously within seconds, it's active and good to use. If the reaction is weak or slow, the baking soda has lost its potency and should be replaced. Once opened, baking soda typically remains active for 6 months.
The standard ratio is ¼ teaspoon (1.5g) of baking soda per 1 cup of flour. This assumes an adequate amount of acid is present in the recipe. Using more than ½ tsp per cup of flour will likely produce a bitter, soapy aftertaste. When in doubt, use less — under-leavening is less noticeable than over-leavening.
A soapy or metallic taste in baked goods almost always means too much baking soda or not enough acid to neutralize it. Ripe bananas provide acidity, but the amount varies. Try reducing baking soda to ¼ tsp, or ensure you're using buttermilk or yogurt as a more reliable acid source.

Baking Soda in Tablespoons and Teaspoons

Quick reference: gram weights for common tablespoon and teaspoon amounts of Baking Soda. US tablespoon = 14.79 ml. US teaspoon = 4.93 ml.

1 US tablespoon
13.8 g
14.79 ml
1 US teaspoon
4.6 g
4.93 ml
1 AUS tablespoon
18.6 g
20 ml
AmountUS (14.79 ml)AUS (20 ml)
¼ teaspoon1.1 g1.5 g
½ teaspoon2.3 g3.1 g
1 teaspoon4.6 g6.2 g
1 tablespoon13.8 g18.6 g
2 tablespoons27.5 g37.2 g
3 tablespoons41.2 g55.8 g
4 tablespoons (¼ cup)55 g74.4 g

Use the tablespoons to grams converter or teaspoons to grams converter for any amount of any ingredient.

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