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How Much Is 1.5 Teaspoons of Cornstarch in Grams?

1.5 teaspoons of cornstarch equals 4.00 g. Cornstarch has a density of 128g per cup (2.67g per teaspoon), which means it's relatively light compared to other common cooking ingredients. For comparison, 1.5 teaspoons of honey would be 10.63 g.

1.5 teaspoons of cornstarch
=
4.00g
Result using all teaspoon standards info
4.00 g (US) 4.06 g (Metric Teaspoon) 4.80 g (Imperial Teaspoon)
1.5 teaspoons of cornstarch is also
4.00

Formula and Step-by-Step

teaspoons × 2.67g/tsp = grams
  1. Start with 1.5 teaspoons of cornstarch
  2. 1 teaspoon of cornstarch = 2.67g
  3. 1.5 × 2.67 = 4g

The same formula works for any amount. Multiply (or divide) by the density, then convert units as needed.

Measuring Tip

For the most consistent results, weigh cornstarch on a kitchen scale. Volume measurements can vary by 20-30% depending on how the flour is scooped.

Cornstarch at Different Amounts

How cornstarch scales across common teaspoons measurements. Your amount (1.5 teaspoons) is highlighted.

0.25 tsp0.67 g0.5 tsp1.33 g1 tsp2.67 g1.5 tsp4 g2 tsp5.33 g3 tsp8 g4 tsp10.67 g5 tsp13.33 g

Other Amounts of Cornstarch

Teaspoons US Grams Metric Teaspoon Imperial Teaspoon
0.25 teaspoons 0.67 g 0.68 g 0.80 g
0.5 teaspoons 1.33 g 1.35 g 1.60 g
1 teaspoon 2.67 g 2.71 g 3.20 g
1.5 teaspoons 4.00 g 4.06 g 4.80 g
2 teaspoons 5.33 g 5.41 g 6.40 g
3 teaspoons 8.00 g 8.12 g 9.61 g
4 teaspoons 10.67 g 10.82 g 12.81 g
5 teaspoons 13.33 g 13.53 g 16.01 g
6 teaspoons 16.00 g 16.23 g 19.21 g
8 teaspoons 21.33 g 21.64 g 25.62 g

Understanding the Units

What is a Teaspoon?

A US teaspoon is 4.929 ml, a metric teaspoon is exactly 5 ml, and an imperial teaspoon is 5.919 ml. The metric and US versions are nearly identical (1.4% difference), but the imperial teaspoon is 20% larger. For most spices the difference is negligible, but for leaveners like baking powder it can affect the result.

What is a Gram?

A gram (g) is a metric unit of mass equal to 1/1000 of a kilogram. It is the standard weight measurement for precise baking worldwide. Professional bakers prefer grams because they are more accurate than volume measurements.

Frequently Asked Questions

About 4.00 g, based on cornstarch having a density of 128g per cup. The exact amount depends on how the ingredient is measured and the specific product.
Multiply the number of teaspoons by 2.67 (grams per teaspoon for cornstarch). For 1.5 teaspoons: 1.5 × 2.67 = 4.00 g.
For the most accurate results, weigh cornstarch on a kitchen scale. If measuring by volume, sift or whisk first to break up clumps, then spoon into the measuring spoon and level off. Do not scoop directly from the bag.
Yes, quite a bit. If you spoon the flour into your measuring spoon and level it off, you will get about 128 grams per cup. If you dip directly into the flour bag and sweep level, the flour packs tighter and you can end up with 140.8 to 160 grams per cup instead. This conversion uses the spoon-and-level method, which is the standard most baking references follow.
Reverse the conversion: 4.00 g ÷ 2.67 = 1.5 teaspoons. Or use the Grams to Teaspoons converter.