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Cooking conversion
Tablespoons of Butter to Ounces
How many ounces are in tablespoons of butter? Type a value below to see the result instantly. Cooking conversions depend on the density of each ingredient — the math here uses 0.959 g/mL for butter.
Calculator
1 tbsp of butter = 0.500204 oz
Tablespoons of Butter to Ounces Conversion Table
Common values for butter:
| Tablespoons of butter | Ounces |
|---|---|
| 0.25 tbsp | 0.125051 oz |
| 0.5 tbsp | 0.250102 oz |
| 1 tbsp | 0.500204 oz |
| 2 tbsp | 1.0004 oz |
| 3 tbsp | 1.5006 oz |
| 4 tbsp | 2.0008 oz |
| 5 tbsp | 2.501 oz |
| 8 tbsp | 4.0016 oz |
| 10 tbsp | 5.002 oz |
How this works
Butter has a density of about 0.959 g/mL (standard: 1 cup = 227g). That means 1 mL of butter weighs 0.959 grams.
Ounces = tablespoons × 0.5002
Note: Salted or unsalted; same density. 1 stick = 1/2 cup = 113g.
Why a cup of butter doesn't always weigh the same
Volume measurements are forgiving in some ways and brutal in others. A cup of butter can vary by 10-20% in weight depending on how it's measured: spooned vs scooped, packed vs loose, sifted vs unsifted. The density figure used here (0.959 g/mL) matches the most common published recipe conventions, but if you're after baking precision, weighing on a kitchen scale is more accurate than measuring by volume.
Sourced from Standard: 1 cup = 227g. Salted or unsalted; same density. 1 stick = 1/2 cup = 113g.
Volume vs weight in cooking
The American convention of measuring ingredients by volume (cups, tablespoons, teaspoons) is convenient but introduces variability that doesn't exist in weight-based recipes. Most professional bakers and bakeries weigh ingredients to within a gram because the structure of baked goods depends on precise ingredient ratios. For everyday cooking — soups, sauces, sautés — the volume-to-weight imprecision rarely matters. For baking that depends on rising or texture (cakes, breads, laminated doughs), it matters a lot.
The conversion
Multiplying the volume of butter by its density (0.959 g/mL) gives the weight in grams. The calculator at the top of this page does the math automatically; the formula box above shows the resulting linear factor for the specific volume and weight units selected here.