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Grams of Water to Teaspoons
How many teaspoons of water are in a given weight? Type a number of grams below to see the volume. Math uses water's density of 1.000 g/mL.
Calculator
100 g of water = 20.2884 tsp
Grams of Water to Teaspoons Conversion Table
Common values for water:
| Grams of water | Teaspoons |
|---|---|
| 10 g | 2.0288 tsp |
| 25 g | 5.0721 tsp |
| 50 g | 10.1442 tsp |
| 100 g | 20.2884 tsp |
| 150 g | 30.4326 tsp |
| 200 g | 40.5768 tsp |
| 250 g | 50.7211 tsp |
| 500 g | 101.44 tsp |
| 1000 g | 202.88 tsp |
How this works
Water has a density of about 1.000 g/mL (si definition). That means 1 mL of water weighs 1.000 grams.
Teaspoons = grams × 0.2029
Note: By definition at 4°C. Within 0.5% across cooking temperatures.
Why a cup of water doesn't always weigh the same
Volume measurements are forgiving in some ways and brutal in others. A cup of water 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 (1.000 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 SI definition. By definition at 4°C. Within 0.5% across cooking temperatures.
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 water by its density (1.000 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.