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150g Cake Flour = 1 ¼ cups + 1 tbsp + ¼ tsp

150 grams of cake flour equals 1 ¼ cups + 1 tbsp + ¼ tsp (1.32 US Customary cups, 1.25 Metric 250 mL cups, 311.3 mL, 21.05 tablespoons, or 5.29 oz) when measured spooned & leveled at a verified density of 114g per US Customary cup.

Exact decimal volume: 1.32 US Customary Cups • 1.25 Metric Cups (250 mL) • 21.05 tbsp • 5.29 oz

Batch
Measuring density
Converted Measure
150 g Cake Flour (spooned & leveled) =
1 ¼ US Cups + 1 tbsp + ¼ tsp
Physical scoop breakdown1.32 cups
1 cup
1/4 cup
1 tbsp
¼ tsp
Edit either side to reverseCake Flour chart →
Grams
150 g
Ounces
5.29 oz
US Cups
1 ¼ cups + 1 tbsp + ¼ tsp
Metric (250mL)
1.25 c
Tablespoons
21.05 tbsp
Milliliters
311.3 mL

Kitchen note: Test-kitchen baseline uses spooned & leveled (114g/cup). Switching to sifted (100g/cup) changes each cup by 14g—use the packing toggle on the scale bench to match your recipe.

Batch Scaling Around 150g Cake Flour

Batch scaling conversion table around 150g of Cake Flour (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×) 75g (2.65 oz) ⅔ cup 155.7 mL
Standard (1×) 150g (5.29 oz) 1 ¼ cups + 1 tbsp + ¼ tsp 311.3 mL
1.5× Batch 225g (7.94 oz) 1 ¾ cups + 3 tbsp + 1 ¾ tsp 467 mL
Double Batch (2×) 300g (10.58 oz) 2 ½ cups + 2 tbsp + ¼ tsp 622.6 mL
Triple Batch (3×) 450g (15.87 oz) 3 ¾ cups + 3 tbsp + ½ tsp 933.9 mL

Measuring 150g of Cake Flour in the Kitchen

Because 1 US Customary Cup (236.6 mL) of cake flour weighs 114g when measured spooned & leveled, 150 Grams (150g) translates to 1.32 US cups (1 ¼ cups + 1 tbsp + ¼ tsp). By contrast, using the sifted measure (100g/cup — a 14g per-cup shift), 150g occupies 1 ½ cups (1.50 cups).

Without a kitchen scale, measure 1 ¼ cups + 1 tbsp + ¼ tsp (21.05 tablespoons total) using spooned & leveled technique. Cake flour is milled extra fine and clumps easily in humidity; sift or whisk thoroughly before spooning into a measuring cup.

Source note: USDA FDC #169743 and Swan’s Down / King Arthur specifications

Frequently Asked Questions

How many cups is 150 grams of cake flour? ▾

150 grams of cake flour (spooned & leveled, 114g per US cup) equals 1 ¼ cups + 1 tbsp + ¼ tsp (1.32 US Customary Cups, 1.25 Metric 250 mL cups, or 21.05 tablespoons).

Should cake flour be sifted before or after measuring? ▾

Most classic recipes call for sifted flour; unsifted cake flour weighs 114g per cup, while sifted weighs approximately 100g.

Why does cake flour produce softer cakes? ▾

It is milled from soft winter wheat with 7-9% protein and chlorinated, which limits gluten development and sets starches faster.