Teaspoon (US) to Cubic Inch Converter

Volume Converter

40 units available

Decimals:

From

To

0.300781

1 tsp = 0.300781 in³

Formula:

in³ = tsp × 0.30078125

With your value: 1 tsp = 0.30078125 in³

How big is that?

Everyday references on a logarithmic scale, all expressed in teaspoon (us) so you can sanity-check the result.

Soda can (1/15 your value)0.0670 tsp

Milk carton (1/4.9 your value)0.203 tsp

Your value1.00 tsp

Kitchen bucket (2.0× your value)2.03 tsp

Car fuel tank (10× your value)10.1 tsp

Bathtub (41× your value)40.6 tsp

Other Teaspoon (US) to Cubic Inch conversions

2 tsp to in³ 3 tsp to in³ 4 tsp to in³ 5 tsp to in³ 6 tsp to in³ 7 tsp to in³ 8 tsp to in³

Teaspoon (US) to Cubic Inch Conversion Table

Teaspoon (US) (tsp)	Cubic Inch (in³)
0.5	0.150391
1	0.300781
2	0.601563
5	1.503906
10	3.007813
15	4.511719
20	6.015625
25	7.519531
50	15.039063
100	30.078125
250	75.195313
500	150.390625
1000	300.78125

Cubic Inch to Teaspoon (US) Conversion Table

Cubic Inch (in³)	Teaspoon (US) (tsp)
0.5	1.662338
1	3.324675
2	6.649351
5	16.623377
10	33.246753
15	49.87013
20	66.493506
25	83.116883
50	166.233766
100	332.467532
250	831.168831
500	1,662.337662
1000	3,324.675325

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Teaspoon (US) (tsp)

Volume

Exact conversion

Derived from the cubic metre. The litre is exactly 10⁻³ m³; US and imperial capacity units are exact multiples fixed by statute.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

Cubic Inch (in³)

Volume

Exact conversion

Derived from the cubic metre. The litre is exactly 10⁻³ m³; US and imperial capacity units are exact multiples fixed by statute.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

How to Convert Teaspoon (US) to Cubic Inch

To convert from Teaspoon (US) (tsp) to Cubic Inch (in³), multiply the value by 0.30078125.

Formula: in³ = tsp × 0.30078125

Reverse: tsp = in³ × 3.3246753247

Step-by-Step Example

Start with your value in Teaspoon (US). For example: 5 tsp
Multiply by the conversion factor: 5 x 0.30078125
The result is: 1.503906 in³

About Teaspoon (US)

The US teaspoon equals approximately 4.93 mL. It is one of the most common cooking measurements.

Common uses: cooking, medicine dosage, baking.

About Cubic Inch

The cubic inch (in³) is a unit of volume and capacity. One cubic inch equals 0.016387064 litres. UnitConvertLab converts it against every other volume unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: volume calculations, engineering and science, education.

Frequently Asked Questions

How many Cubic Inch are in 1 Teaspoon (US)?

There are exactly 0.30078125 Cubic Inch in 1 Teaspoon (US). This means the conversion factor from Teaspoon (US) to Cubic Inch is 0.30078125.

What is the formula to convert Teaspoon (US) to Cubic Inch?

The formula to convert Teaspoon (US) to Cubic Inch is: in³ = tsp × 0.30078125. For example, to convert 10 Teaspoon (US) to Cubic Inch, you would multiply 10 by 0.30078125.

What is a Teaspoon (US)?