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300g Cultured Buttermilk = 1 ¼ cups

300 grams of cultured buttermilk equals 1 ¼ cups (1.24 US Customary cups, 1.17 Metric 250 mL cups, 293.3 mL, 19.83 tablespoons, or 10.58 oz) when measured poured liquid at a verified density of 242g per US Customary cup.

Exact decimal volume: 1.24 US Customary Cups • 1.17 Metric Cups (250 mL) • 19.83 tbsp • 10.58 oz

Batch
Measuring density
Converted Measure
300 g Cultured Buttermilk (poured liquid) =
1 ¼ US Cups
Physical scoop breakdown1.24 cups
1 cup
1/4 cup
Edit either side to reverseButtermilk chart →
Grams
300 g
Ounces
10.58 oz
US Cups
1 ¼ cups
Metric (250mL)
1.17 c
Tablespoons
19.83 tbsp
Milliliters
293.3 mL

Kitchen note: Test-kitchen baseline uses poured liquid (242g/cup). Switching to vigorously shaken cultured buttermilk (242g/cup) changes each cup by 0g—use the packing toggle on the scale bench to match your recipe.

Batch Scaling Around 300g Cultured Buttermilk

Batch scaling conversion table around 300g of Cultured Buttermilk (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×) 150g (5.29 oz) ½ cup + 1 tbsp + 2 ¾ tsp 146.6 mL
Standard (1×) 300g (10.58 oz) 1 ¼ cups 293.3 mL
1.5× Batch 450g (15.87 oz) 1 ¾ cups + 1 tbsp + 2 ¼ tsp 439.9 mL
Double Batch (2×) 600g (21.16 oz) 2 ⅓ cups + 2 tbsp + 1 tsp 586.6 mL
Triple Batch (3×) 900g (31.75 oz) 3 ⅔ cups + 2 ½ tsp 879.9 mL

Measuring 300g of Cultured Buttermilk in the Kitchen

Because 1 US Customary Cup (236.6 mL) of cultured buttermilk weighs 242g when measured poured liquid, 300 Grams (300g) translates to 1.24 US cups (1 ¼ cups). By contrast, using the vigorously shaken cultured buttermilk measure (242g/cup — an identical per-cup density), 300g occupies 1 ¼ cups (1.24 cups).

Without a kitchen scale, measure 1 ¼ cups (19.83 tablespoons total) using poured liquid technique. Shake container vigorously before pouring to reconstitute settled cultured curds into a creamy fluid.

Source note: USDA FoodData Central #171271 & King Arthur standard (242g/cup)

Frequently Asked Questions

How many cups is 300 grams of cultured buttermilk? ▾

300 grams of cultured buttermilk (poured liquid, 242g per US cup) equals 1 ¼ cups (1.24 US Customary Cups, 1.17 Metric 250 mL cups, or 19.83 tablespoons).

Why does buttermilk produce exceptionally tender baked goods? ▾

Lactic acid weakens gluten networks and reacts vigorously with alkaline baking soda, generating carbon dioxide lift and a soft crumb.

Can you freeze leftover buttermilk for future baking? ▾

Yes, freeze in 1/2-cup portions or ice cube trays; thaw and whisk to blend before mixing into batters.