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30g Cultured Buttermilk = ⅛ cup

30 grams of cultured buttermilk equals ⅛ cup (0.12 US Customary cups, 0.12 Metric 250 mL cups, 29.3 mL, 1.98 tablespoons, or 1.06 oz) when measured poured liquid at a verified density of 242g per US Customary cup.

Exact decimal volume: 0.12 US Customary Cups • 0.12 Metric Cups (250 mL) • 1.98 tbsp • 1.06 oz

Batch
Measuring density
Converted Measure
30 g Cultured Buttermilk (poured liquid) =
⅛ US Cup
Physical scoop breakdown0.12 cups
×2
2 tbsp
Edit either side to reverseButtermilk chart →
Grams
30 g
Ounces
1.06 oz
US Cups
⅛ cup
Metric (250mL)
0.12 c
Tablespoons
1.98 tbsp
Milliliters
29.3 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 30g Cultured Buttermilk

Batch scaling conversion table around 30g 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×) 15g (0.53 oz) 1 tbsp 14.7 mL
Standard (1×) 30g (1.06 oz) ⅛ cup 29.3 mL
1.5× Batch 45g (1.59 oz) 3 tbsp 44 mL
Double Batch (2×) 60g (2.12 oz) ¼ cup 58.7 mL
Triple Batch (3×) 90g (3.17 oz) ⅓ cup + 1 ¾ tsp 88 mL

Measuring 30g of Cultured Buttermilk in the Kitchen

Because 1 US Customary Cup (236.6 mL) of cultured buttermilk weighs 242g when measured poured liquid, 30 Grams (30g) translates to 0.12 US cups (⅛ cup). By contrast, using the vigorously shaken cultured buttermilk measure (242g/cup — an identical per-cup density), 30g occupies ⅛ cup (0.12 cups).

Without a kitchen scale, measure ⅛ cup (1.98 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 30 grams of cultured buttermilk? ▾

30 grams of cultured buttermilk (poured liquid, 242g per US cup) equals ⅛ cup (0.12 US Customary Cups, 0.12 Metric 250 mL cups, or 1.98 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.