Baking Measurements: Cups, Grams & Ounces Explained

Baking is a science, and precision matters. Understanding how to convert between cups, grams, and ounces is the difference between a perfect cake and a dense disaster. This guide will help you master baking measurements once and for all.

Why Weight Matters in Baking

Volume measurements (cups) are inconsistent because ingredients pack differently. Consider flour: one cook might scoop loosely (120g per cup) while another packs firmly (160g per cup). That's a 33% difference that can ruin your recipe.

Professional bakers always use weight because it's precise and repeatable. A kitchen scale is the single most important tool for consistent baking results.

Common Baking Conversions

Here are the most frequently needed conversions for baking:

• All-purpose flour: 1 cup = 125g = 4.4 oz
• Bread flour: 1 cup = 127g = 4.5 oz
• Cake flour: 1 cup = 114g = 4 oz
• Granulated sugar: 1 cup = 200g = 7 oz
• Brown sugar (packed): 1 cup = 220g = 7.75 oz
• Icing/powdered sugar: 1 cup = 120g = 4.2 oz
• Butter: 1 cup = 227g = 8 oz = 2 sticks
• Cocoa powder: 1 cup = 85g = 3 oz

Butter Conversion Guide

Butter measurements vary between countries:

• US: Sold in 1-lb boxes with 4 sticks (each 113g/4 oz)
• UK/Europe: Sold in 250g blocks without markings
• Australia: Sold in 250g or 500g blocks

Key conversions: 1 tablespoon butter = 14g = 0.5 oz. Half a 250g block ≈ 1 US stick.

Measuring Flour Correctly

The way you measure flour dramatically affects your results:

• Spoon and level method: Fluff flour, spoon into cup, level with knife (most accurate for cups)
• Scoop method: Dip cup directly into flour (adds 10-25% more flour)
• Weight method: Use a scale — always accurate, regardless of technique

When following recipes, check which method the author uses. American recipes often assume the spoon-and-level method.

Egg Sizes Matter

Eggs vary significantly by region:

• US Large: 50g whole egg (standard for American recipes)
• UK Medium: 53-63g (closest to US Large)
• UK Large: 63-73g (larger than US Large)

For precision baking, weigh your eggs. Most recipes calling for "1 egg" expect about 50g of liquid egg.

Temperature Matters Too

Oven temperatures for common baking:

• Cookies: 180°C = 350°F = Gas Mark 4
• Cakes: 170-180°C = 325-350°F = Gas Mark 3-4
• Bread: 200-230°C = 400-450°F = Gas Mark 6-8
• Pastry: 200°C = 400°F = Gas Mark 6

Tips for Perfect Bakes

• Invest in a digital scale: They cost under £15 and transform your baking
• Use room temperature ingredients: Unless specified otherwise
• Measure liquids at eye level: Using a liquid measuring jug
• Zero your scale: After adding each ingredient to the bowl
• Trust weight over volume: When a recipe gives both, use the weight