How Many Grams Are in a Teaspoon?

How many grams are in 1 teaspoon by ingredient?

According to King Arthur Baking's ingredient weight chart, common kitchen ingredients weigh different amounts per US teaspoon (5 ml). Liquids: water is 5 g, milk is 5 g, olive oil is 4.5 g, honey is 7 g, maple syrup is 7 g, and vanilla extract is 4 g. Dry sweeteners: granulated sugar is 4 g, brown sugar (packed) is 4 g, powdered sugar is 2.5 g. Baking ingredients: all-purpose flour is 2.5 g, baking powder is 4 g, baking soda is 4.5 g, salt (table) is 6 g, kosher salt is 4 g, and instant yeast is 3.1 g. Spices: cocoa powder is 2 g, cinnamon is 2.5 g, paprika is 2 g, and cayenne is 2 g. Water is the reference standard at 1 ml = 1 g; everything else diverges based on density.

Why does the teaspoon-to-gram math change by ingredient?

Teaspoons measure volume (a fixed 5 ml of space), while grams measure mass (weight). The relationship between them changes based on each ingredient's density. A teaspoon of flour fills the same volume as a teaspoon of salt (both 5 ml), but salt is much denser, so it weighs more. Flour is full of air pockets between the particles; salt is a solid crystal with no gaps. Same volume, very different weight. Honey weighs more than water per teaspoon because honey is denser (it sinks in water); olive oil weighs less than water because oil is less dense (it floats). This is why every ingredient has its own teaspoon-to-gram ratio, and why recipes converted from volume to weight need ingredient-specific math, not a single multiplier.

How do you weigh tiny ingredient amounts accurately?

For amounts under 10 grams, a precision scale that reads to 0.1 g gives the most accurate measurement. Standard kitchen scales that read in 1 g increments are accurate enough for most teaspoon-sized amounts but lose precision below 5 g. For ingredients like baking soda, baking powder, salt, yeast, and spices, where small variations affect taste, rise, or seasoning balance, weighing in grams beats spoon measurements significantly. A 0.1 g precision scale costs around $20-30 and is the cheapest upgrade for bakers serious about consistency. Tare the scale to zero with your container in place, then add the ingredient directly to the container rather than scooping with a measuring spoon. This method bypasses the variability of how someone fills a teaspoon.

When does measuring teaspoons in grams matter most?

Baking is where teaspoon-to-gram precision matters most. Leavening agents (baking powder, baking soda, yeast) and salt are measured in tiny amounts where teaspoon variations can shift the entire balance of a recipe. International recipes universally use grams, including the small spice and leavening amounts that US recipes list in teaspoons. Spice math matters for bold flavors: a teaspoon of cayenne is 2 g and a teaspoon of paprika is also 2 g, but the heat impact is wildly different at the same gram weight. Bread baking with sourdough or commercial yeast benefits especially from gram precision, since dough behavior depends on hydration percentages calculated from weighed ingredient ratios.