Spoon sizes
- US tablespoon, 14.787 mL: half a US fluid ounce, and 3 teaspoons (NIST Handbook 44).
- US teaspoon, 4.929 mL: a third of a tablespoon. NIST rounds it to 5 mL for kitchen use.
- Metric tablespoon, 15 mL, used in the UK, Canada and New Zealand. Close enough to the US tablespoon that the two are swapped freely.
- Australian tablespoon, 20 mL, which is 4 teaspoons. A third more than everywhere else; this matters for salt, baking soda and other strong ingredients.
| Unit | Exact size | Definition | Source |
|---|---|---|---|
| Teaspoons | 4.92892159375 mL | 1 teaspoon = 1/3 tablespoon | NIST Handbook 44 (2019) |
| Tablespoons | 14.78676478125 mL | 1 tablespoon = 1/2 US fluid ounce = 3 teaspoons | NIST Handbook 44 (2019) |
| Teaspoons | 5 mL | Metric teaspoon | Wikipedia |
| Tablespoons | 15 mL | Metric tablespoon used in the UK, Canada and New Zealand | Wikipedia |
| Tablespoons | 20 mL | Australian tablespoon = 4 metric teaspoons | Wikipedia |
The formula
grams = tablespoons x 14.787 mL x grams per mL of the ingredient
The grams per mL come from the weight of a full cup (236.6 mL) in USDA FoodData Central or King Arthur Baking's chart. For baking powder, baking soda, yeast, cinnamon and kosher salt the sources only print a spoon weight, so that weight is used directly. Where a source prints both, they agree closely: USDA lists table salt at 18 g a tablespoon and 292 g a cup, and 292 g a cup works out to 18.3 g a tablespoon.
Level spoons
All the weights assume a level spoon: filled, then scraped flat with a knife. A heaped spoon of flour or sugar can hold well over the level amount, and recipes that say "heaped" or "rounded" mean more than a level spoon. When a recipe gives a spoon measure for something strong, such as salt, baking soda or yeast, level it.
Salt is three different ingredients
Table salt, Diamond Crystal kosher salt and Morton kosher salt have very different crystals. King Arthur's chart puts a tablespoon at 18 g, 8 g and 16 g. A recipe written with Diamond Crystal and made with table salt gets more than twice the salt. When a recipe names a brand of kosher salt, pick the matching entry.
Every ingredient, per spoon
| Ingredient | 1 tsp (g) | 1 US tbsp (g) | 1 metric tbsp, 15 mL (g) | 1 Australian tbsp, 20 mL (g) |
|---|---|---|---|---|
| All-purpose flour | 2.5 | 7.5 | 7.61 | 10.1 |
| Bread flour | 2.5 | 7.5 | 7.61 | 10.1 |
| Cake flour | 2.5 | 7.5 | 7.61 | 10.1 |
| Whole wheat flour | 2.35 | 7.06 | 7.16 | 9.55 |
| Self-rising flour | 2.35 | 7.06 | 7.16 | 9.55 |
| Almond flour | 2 | 6 | 6.09 | 8.12 |
| White rice flour | 2.96 | 8.88 | 9 | 12 |
| Cornstarch (cornflour in the UK) | 2.33 | 7 | 7.1 | 9.47 |
| Cocoa powder, unsweetened | 1.75 | 5.25 | 5.33 | 7.1 |
| Granulated sugar | 4.13 | 12.4 | 12.6 | 16.7 |
| Brown sugar, packed | 4.44 | 13.3 | 13.5 | 18 |
| Powdered sugar (icing sugar) | 2.35 | 7.06 | 7.16 | 9.55 |
| Caster sugar (superfine) | 3.96 | 11.9 | 12 | 16.1 |
| Honey | 7.06 | 21.2 | 21.5 | 28.7 |
| Maple syrup | 6.56 | 19.7 | 20 | 26.6 |
| Molasses (black treacle is close) | 7.02 | 21.1 | 21.4 | 28.5 |
| Light corn syrup | 7.1 | 21.3 | 21.6 | 28.8 |
| Butter | 4.71 | 14.1 | 14.3 | 19.1 |
| Vegetable oil (canola) | 4.54 | 13.6 | 13.8 | 18.4 |
| Olive oil | 4.5 | 13.5 | 13.7 | 18.3 |
| Coconut oil | 4.71 | 14.1 | 14.3 | 19.1 |
| Vegetable shortening | 4.27 | 12.8 | 13 | 17.3 |
| Milk, whole | 5.08 | 15.2 | 15.5 | 20.6 |
| Heavy cream | 4.96 | 14.9 | 15.1 | 20.1 |
| Buttermilk | 5.1 | 15.3 | 15.5 | 20.7 |
| Plain yogurt | 5.1 | 15.3 | 15.5 | 20.7 |
| Sour cream | 4.79 | 14.4 | 14.6 | 19.4 |
| Water | 4.94 | 14.8 | 15 | 20 |
| Rolled oats | 1.85 | 5.56 | 5.64 | 7.52 |
| White rice, long grain, uncooked | 3.85 | 11.6 | 11.7 | 15.6 |
| Chocolate chips | 3.54 | 10.6 | 10.8 | 14.4 |
| Walnuts, chopped | 2.44 | 7.31 | 7.42 | 9.89 |
| Raisins | 3.1 | 9.31 | 9.45 | 12.6 |
| Shredded coconut, sweetened | 1.94 | 5.81 | 5.9 | 7.86 |
| Cheddar, shredded | 2.35 | 7.06 | 7.16 | 9.55 |
| Parmesan, grated | 2.08 | 6.25 | 6.34 | 8.45 |
| Peanut butter, smooth | 5.38 | 16.1 | 16.4 | 21.8 |
| Table salt | 6.08 | 18.3 | 18.5 | 24.7 |
| Kosher salt, Diamond Crystal | 2.67 | 8 | 8.12 | 10.8 |
| Kosher salt, Morton | 5.33 | 16 | 16.2 | 21.6 |
| Baking soda (bicarbonate of soda) | 4.6 | 13.8 | 14 | 18.7 |
| Baking powder | 4.6 | 13.8 | 14 | 18.7 |
| Active dry yeast | 4 | 12 | 12.2 | 16.2 |
| Ground cinnamon | 2.6 | 7.8 | 7.91 | 10.5 |