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120g Baking Soda / Sodium Bicarbonate = ½ cup + 2 ¼ tsp

120 grams of baking soda / sodium bicarbonate equals ½ cup + 2 ¼ tsp (0.55 US Customary cups, 0.52 Metric 250 mL cups, 129 mL, 8.73 tablespoons, or 4.23 oz) when measured dip and sweep at a verified density of 220g per US Customary cup.

Exact decimal volume: 0.55 US Customary Cups • 0.52 Metric Cups (250 mL) • 8.73 tbsp • 4.23 oz

Batch
Measuring density
Standard: Dip and sweep220g / cup
Converted Measure
120 g Baking Soda / Sodium Bicarbonate (Dip and sweep) =
½ US Cup + 2 ¼ tsp
Physical scoop breakdown0.55 cups
1/2 cup
2 ¼ tsp
Edit either side to reverseBaking Soda chart →
Grams
120 g
Ounces
4.23 oz
US Cups
½ cup + 2 ¼ tsp
Metric (250mL)
0.52 c
Tablespoons
8.73 tbsp
Milliliters
129 mL

Kitchen note: 1 US Customary Cup (236.6 mL) of baking soda / sodium bicarbonate (dip and sweep) weighs 220g, while 1 International Metric Cup (250 mL) weighs 232g.

Batch Scaling Around 120g Baking Soda / Sodium Bicarbonate

Batch scaling conversion table around 120g of Baking Soda / Sodium Bicarbonate (0.5× to 3× recipe batches in grams, ounces, US cups, and milliliters)
Batch Scale Weight (g / oz) US Cups & Spoons Metric (mL)
Half Batch (0.5×) 60g (2.12 oz) ¼ cup + 1 tsp 64.5 mL
Standard (1×) 120g (4.23 oz) ½ cup + 2 ¼ tsp 129 mL
1.5× Batch 180g (6.35 oz) ¾ cup + 1 tbsp + ¼ tsp 193.6 mL
Double Batch (2×) 240g (8.47 oz) 1 cup + 1 tbsp + 1 ¼ tsp 258.1 mL
Triple Batch (3×) 360g (12.7 oz) 1 ½ cups + 2 tbsp + ½ tsp 387.1 mL

Measuring 120g of Baking Soda / Sodium Bicarbonate in the Kitchen

Because 1 US Customary Cup (236.6 mL) of baking soda / sodium bicarbonate weighs 220g when measured dip and sweep, 120 Grams (120g) translates to 0.55 US cups (½ cup + 2 ¼ tsp).

Without a kitchen scale, measure ½ cup + 2 ¼ tsp (8.73 tablespoons total) using dip and sweep technique. Dip measuring spoon or cup into the container and scrape flush against the box edge. Sodium bicarbonate is a pure mineral salt that is noticeably denser than baking powder, weighing 220 grams per cup (14g per tablespoon, 4.6g per teaspoon).

Source note: USDA FoodData Central FDC ID 172811; Church & Dwight Arm & Hammer Chemical Specs

Frequently Asked Questions

How many cups is 120 grams of baking soda / sodium bicarbonate? ▾

120 grams of baking soda / sodium bicarbonate (Dip and sweep, 220g per US cup) equals ½ cup + 2 ¼ tsp (0.55 US Customary Cups, 0.52 Metric 250 mL cups, or 8.73 tablespoons).

Why is baking soda stronger than baking powder? ▾

Baking soda is 100% pure sodium bicarbonate, whereas baking powder is diluted with monocalcium phosphate acid salts and cornstarch filler.

How do I test if baking soda is still active? ▾

Drop 1/2 teaspoon into a tablespoon of distilled vinegar; rapid, foaming effervescence confirms strong leavening potency.