Convert teaspoons to cubic inches

1 tsp=0.3008in³

Use the converter below to change any teaspoons value into cubic inches instantly — with formula, conversion table, and real-world examples.

You have

Equals

0.30078

Conversion formula

Forward

cubic inches = teaspoons × 0.3008

Reverse

teaspoons = cubic inches × 3.32468

Example: 10 tsp × 0.3008 = 3.00781 in³.

About both units

From

Teaspoon

tsp

The teaspoon equals 4.929 ml in the US, rounded to 5 ml in most recipes and on medication labels. The relationship 3 teaspoons = 1 tablespoon is universal across US, UK and metric systems. Precision medicine and small-volume cooking rely on teaspoons.

Real-world: 1 teaspoon of sugar = 4 g = 16 calories. Salt in a recipe often ½ to 1 tsp per 500 g food.

Read full teaspoon reference →

Cubic Inch

in³

The cubic inch equals 16.387 cubic centimetres. Used in US automotive engineering for engine displacement (e.g., "350 cubic inch V8 = 5.7 L") and in firearms (bullet cartridges). Most of the rest of the world uses cc or litres.

Real-world: 350 cu in V8 = 5.7 L engine. 302 cu in Ford V8 = 4.9 L. Modern specs typically give litres.

Read full cubic inch reference →

Teaspoon to Cubic Inch conversion table

Common teaspoons to cubic inches values for quick reference.

Teaspoon (tsp)	Cubic Inch (in³)
1 tsp	0.3008 in³
2 tsp	0.6016 in³
5 tsp	1.50391 in³
10 tsp	3.00781 in³
20 tsp	6.01562 in³
50 tsp	15.0391 in³
100 tsp	30.0781 in³
200 tsp	60.1562 in³
500 tsp	150.391 in³
1,000 tsp	300.781 in³

Tips & common mistakes

Quick tips

1 tsp = 5 ml (practical); 4.929 ml (US legal).
3 tsp = 1 tbsp universally.
Use a proper measuring spoon — household teaspoons vary 3–8 ml.

Avoid these

Using a regular cutlery teaspoon for medication — can over- or under-dose by 30–60%.
Mixing tsp and tbsp — 3× difference.
Assuming "a pinch" or "a dash" is reproducible — it varies 0.1 to 0.5 ml.

Frequently asked questions

How many cubic inches in a teaspoon?

One teaspoon equals 0.3008 cubic inches.

How do I convert teaspoons to cubic inches?

Multiply the teaspoon value by 0.3008 to get the equivalent in cubic inches.

What is 100 teaspoons in cubic inches?

100 teaspoons equals 30.0781 cubic inches.

Is a teaspoon bigger than a cubic inch?

No. 1 teaspoon equals 0.3008 cubic inches, so one teaspoon is smaller.

How to convert teaspoons to cubic inches without a calculator?

Multiply by 0.3 for a quick estimate; use a calculator for precise results.

Related volume conversions

📊 See full comparison matrix →

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