TSP to Grams Converter

Volume and Density: Why Teaspoons Don't Always Equal the Same Grams

A teaspoon measures volume, while a gram measures mass. One teaspoon of water weighs 5 grams, but one teaspoon of flour weighs only about 2.5 grams, and one teaspoon of salt weighs roughly 6 grams. This discrepancy arises because different substances have different densities—how tightly packed their molecules are.

The relationship is straightforward: Mass = Density × Volume. Once you know an ingredient's density (usually expressed in grams per millilitre or grams per cubic centimetre), multiplying by the volume gives you the exact mass. That's why professional bakers and cooks prefer grams: they're unambiguous and account for how ingredients actually pack into a spoon.

Teaspoons to Grams Conversion Formula

To find the gram weight of any ingredient from its teaspoon volume, multiply the number of teaspoons by the substance's density and the volume of one teaspoon in millilitres.

• Mass (g) — Weight of the ingredient in grams
• Teaspoons (tsp) — Volume of the ingredient measured in teaspoons
• Density (g/mL) — How many grams of the ingredient occupy one millilitre of space

Using the Converter: Step-by-Step

Start by selecting your ingredient from the dropdown menu. Many substances—particularly flour, sugar, and oils—come in multiple varieties, each with a slightly different density. Choose the specific type if prompted (for example, granulated sugar versus powdered sugar).

Once selected, the tool displays the density automatically. If your ingredient isn't listed, you can manually enter its density value if you know it from reliable sources or product labels. Then enter the quantity in teaspoons, and the converter instantly calculates the gram equivalent. The reverse works too: input grams and get teaspoons.

Common Conversion Pitfalls and Tips

Accuracy in the kitchen depends on understanding the limits and quirks of volume-to-weight conversions.

1. Packing matters for flour and sugar — How tightly you pack flour into a measuring spoon affects its weight. Spooned and levelled flour is lighter than scooped-and-compressed flour. For baking precision, always use grams or follow a recipe's specific instructions on how to measure.
2. Density varies by brand and moisture — Salt, sugar, and flour densities can shift slightly depending on manufacturing, moisture content, and how long they've been stored. The densities in this converter are averages; small variations (±5%) are normal and usually don't noticeably affect home cooking.
3. Liquids are simpler but not identical — Oils, honey, and water have fairly consistent densities. However, honey is denser than water, and some oils float on water. Always double-check if you're converting an unfamiliar liquid ingredient.
4. Temperature and altitude affect results — Density changes slightly with temperature and atmospheric pressure. At high altitudes or in very warm kitchens, conversions may drift by a few percent. For casual cooking, this is negligible; for precision baking, measure by weight at your location's conditions.

Quick Reference: Common Ingredient Conversions

These approximations cover everyday kitchen staples:

• Water: 1 tsp ≈ 5 g
• Granulated sugar: 1 tsp ≈ 4.2 g
• Powdered sugar: 1 tsp ≈ 2.8 g
• Brown sugar: 1 tsp ≈ 4 g (packed)
• Table salt: 1 tsp ≈ 6.1 g
• All-purpose flour (spooned): 1 tsp ≈ 2.5 g
• Olive oil: 1 tsp ≈ 4.7 g
• Honey: 1 tsp ≈ 7 g

Bookmark these for quick mental math, but always use grams when precision is critical—especially in baking, where small weight differences can dramatically affect texture and rise.