How Many Grams in a Tablespoon of Butter? | Precise Conversions

One US tablespoon of butter weighs 14.2 grams, the precise standard for accurate baking and cooking.

Getting that single tablespoon wrong makes cookies flat, sauce split, or pastry greasy. The short answer is 14.2 g per tablespoon, but the whole story involves why volume and weight measures disagree, and what to do when a recipe calls for grams and you only have a tablespoon. Here is the exact number, the rounding rules that matter, and the kitchen methods that eliminate guesswork.

The Precise Weight of a Tablespoon of Butter

The accepted conversion for US-standard butter is 1 tablespoon = 14.2 grams. The precise calculation is 14.1748 grams, but every major culinary authority rounds to 14.2 g for practical use. One cup of butter weighs 227 grams. Since a cup holds 16 tablespoons, division (227 ÷ 16) gives 14.1875 g per tablespoon, commonly rounded to 14.2 g. Salted and unsalted butter weigh the same by volume. A full stick equals 8 tablespoons or 113 grams, making half a tablespoon roughly 7 g.

Common Rounding Approaches and When They Matter

For most home baking, 14 g works fine. For precision baking — macarons, laminated doughs — stick with 14.2 g per tablespoon and use a scale.

Measuring Butter by Grams: Three Methods That Work

Volume measurement is imprecise because temperature, packing, and air gaps change how much fits in a spoon. A scale eliminates that.

Digital Kitchen Scale (Most Accurate)

Place a bowl on the scale and tare to zero. Add butter until the display reads the exact weight you need — 14.2 g for one tablespoon, 28.4 g for two. Works cold, softened, or melted. Takes ten seconds and removes all volume errors.

Water Displacement (For Soft or Irregular Butter)

Fill a 2-cup liquid measuring cup with water to the 1-cup (250 mL) mark. Submerge cold butter pieces fully. Read the new water level and subtract 1 cup to find the volume. Remove butter, pat dry, and use. Works when butter is too soft to cut cleanly; ensure no air pockets.

Plastic-Wrap Lining (For Dry Measuring Cups)

Line a dry measuring cup with plastic wrap. Transfer softened butter, pressing gently. Level the top. Lift the wrap and butter out together. Works with no scale and soft butter, but is the least reliable due to variable packing force.

Common Mistakes That Throw Off Your Measurement

Cold butter is harder to pack evenly than softened, so scooping often leaves air pockets reducing actual weight by a gram or more. Softened butter, pressed into a spoon, can over-pack by the same amount. Assuming 1 tablespoon equals 15 g is wrong; that conversion is for water (1 tbsp = 14.79 g). Butter has lower density, so 15 g adds roughly 6% more fat, enough to change texture. Melted butter follows different rules: the 14.2 g standard applies to solid butter. If a recipe calls for melted butter, melt first then measure liquid volume — never melt a solid measurement and assume the volume stays the same.

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