The Butter Measurement Problem
Butter is one of the most frequently used ingredients in baking, and also one of the most confusing to measure — especially when following recipes from different countries. American recipes call for "sticks," British ones ask for grams or ounces, and some older recipes even use "knobs" (an infuriatingly vague term). This guide gives you every butter conversion you need in one place.
Understanding US Butter Sticks
In the United States, butter is sold in rectangular sticks, each weighing 4 oz (113 g) and equal to ½ cup or 8 tablespoons. Most US butter wrappers have tablespoon markings printed on the foil, making small measurements easy to cut off.
- 1 stick = ½ cup = 8 tablespoons = 4 oz = 113 g
- 2 sticks = 1 cup = 16 tablespoons = 8 oz = 227 g
- ½ stick = ¼ cup = 4 tablespoons = 2 oz = 57 g
- ¼ stick = 2 tablespoons = 1 oz = 28 g
Complete Butter Conversion Table
| Cups | Tablespoons | US Sticks | Ounces | Grams |
|---|---|---|---|---|
| ⅛ cup | 2 tbsp | ¼ stick | 1 oz | 28 g |
| ¼ cup | 4 tbsp | ½ stick | 2 oz | 57 g |
| ⅓ cup | 5⅓ tbsp | ⅔ stick | 2.7 oz | 76 g |
| ½ cup | 8 tbsp | 1 stick | 4 oz | 113 g |
| ⅔ cup | 10⅔ tbsp | 1⅓ sticks | 5.3 oz | 151 g |
| ¾ cup | 12 tbsp | 1½ sticks | 6 oz | 170 g |
| 1 cup | 16 tbsp | 2 sticks | 8 oz | 227 g |
| 1½ cups | 24 tbsp | 3 sticks | 12 oz | 340 g |
| 2 cups | 32 tbsp | 4 sticks | 16 oz (1 lb) | 454 g |
UK vs US Butter: Is There a Difference?
Yes — and it matters for pastry. UK butter typically has a slightly higher fat content (around 82% fat) compared to standard US butter (around 80% fat). This makes UK butter a touch richer and can affect the flakiness of pastry and the texture of buttercream. For most everyday baking, the difference is negligible, but it's worth knowing if you're making croissants or puff pastry where fat content is critical.
How to Measure Butter Without a Scale
If you don't have a scale or a butter wrapper with markings, here are your options:
Tablespoon Method
Soften the butter slightly, then pack it firmly into a measuring tablespoon and level off. This works reasonably well for small amounts.
Water Displacement Method
For odd fractions, use water displacement:
- Fill a liquid measuring cup with cold water to a level that, when you add the butter, the water will rise to your target level.
- For example, for ⅓ cup of butter: fill with water to the ⅔ cup mark, then add butter until the water rises to exactly 1 cup.
- Drain off the water completely and use the butter.
Salted vs Unsalted Butter
Most baking recipes call for unsalted butter so the baker can control the salt level precisely. If you only have salted butter:
- Reduce the additional salt in the recipe by about ¼ teaspoon per ½ cup (1 stick) of butter used.
- Salted butter typically contains around 1.6–2% salt by weight.
In practice, substituting salted for unsalted rarely ruins a bake — it mainly affects the salt balance. Adjust to taste where possible.
Storing Butter for Baking
- Room temperature: Softened butter (ideal for creaming) keeps safely at room temperature for up to 2 days in most climates.
- Refrigerator: Keeps for up to a month past the printed date if unopened.
- Freezer: Freezes well for up to 6 months. Freeze in stick or block form and thaw in the fridge overnight.