Teaspoon (US) to Cubic Inches Converter
Volume · unit-converter
Convert Teaspoon (US) to Cubic Inches with a fixed input and output unit, step-by-step formula line, and reference tables. All calculations use liter-based factors (US fluid measures, imperial UK units, SI cubic meters).
Calculator
From: Teaspoon (US) (tsp)
To: Cubic Inches (in3)
About Teaspoon (US)
The US teaspoon is 1/6 US fluid ounce (about 4.9289 ml). US recipes use teaspoons for spices and small liquid amounts.
About Cubic Inches
The cubic inch is the volume of a cube one inch on a side. Engine displacement in the US and small volumes in machining use cubic inches.
How to convert teaspoons (us) to cubic inches
1 teaspoon (us) is equal to 0.30078125 cubic inches:
1 tsp = (0.00492892159375 L ÷ 0.016387064 L) in3 = 0.30078125 in3
Each teaspoon (us) is defined as 0.00492892159375 L and each cubic inches as 0.016387064 L, so one tsp equals 0.00492892159375 ÷ 0.016387064 in3 = 0.30078125 in3.
Let V(tsp) be the numeric value of the same volume measured in Teaspoon (US) (tsp), and V(in3) the value in Cubic Inches (in3). Then:
V(in3) = V(tsp) × (0.00492892159375 / 0.016387064)
Equivalently, divide by how many tsp fit into one in3 (liters per in3 divided by liters per tsp):
V(in3) = V(tsp) ÷ 3.32467532467532
Or: cubic inches = teaspoon (us) ÷ 3.32467532467532
Examples
Example #1: Convert 20 tsp to cubic inches
20 tsp = 20 tsp × (0.00492892159375/0.016387064) in3 = 6.015625 in3
20 tsp = 20 tsp ÷ 3.32467532467532 = 6.015625 in3
Example #2: Convert 50 tsp to cubic inches
50 tsp = 50 tsp × (0.00492892159375/0.016387064) in3 = 15.0390625 in3
50 tsp = 50 tsp ÷ 3.32467532467532 = 15.0390625 in3
Summary
To convert Teaspoon (US) to Cubic Inches, multiply the value in tsp by the ratio of liters per tsp divided by liters per in3. Equivalently: value_in3 = value_tsp × (0.00492892159375 / 0.016387064). Numerically, 1 tsp equals 0.30078125 in3.
Relationship context
Both units are US customary fluid / volume in this tool’s grouping. Conversions use fixed liter equivalents, so factors are consistent for cooking, engineering, and cross-checking labels. The factor from Teaspoon (US) to Cubic Inches is 3.007813e-1 (1 tsp = 0.30078125 in3).
Conversion tables
| Teaspoon (US) (tsp) | Cubic Inches (in3) |
|---|---|
| 0.1 | 0.030078125 |
| 1 | 0.30078125 |
| 2 | 0.6015625 |
| 3 | 0.90234375 |
| 4 | 1.203125 |
| 5 | 1.50390625 |
| 6 | 1.8046875 |
| 7 | 2.10546875 |
| 8 | 2.40625 |
| 9 | 2.70703125 |
| Teaspoon (US) (tsp) | Cubic Inches (in3) |
|---|---|
| 10 | 3.0078125 |
| 20 | 6.015625 |
| 30 | 9.0234375 |
| 40 | 12.03125 |
| 50 | 15.0390625 |
| 60 | 18.046875 |
| 70 | 21.0546875 |
| 80 | 24.0625 |
| 90 | 27.0703125 |
| 100 | 30.078125 |
Conversions outside the hub list
The grid on the category page lists hub units only. These pairs include at least one unit outside that hub set (same tools: formulas and tables on each page).
- us-teaspoon to uk-gallonTeaspoon (US) to Gallon (UK)
- us-teaspoon to uk-quartTeaspoon (US) to Quart (UK)
- us-teaspoon to uk-pintTeaspoon (US) to Pint (UK)
- us-teaspoon to us-quartTeaspoon (US) to Quart (US)
- us-teaspoon to us-pintTeaspoon (US) to Pint (US)
- us-teaspoon to uk-cupTeaspoon (US) to Cup (UK)
- us-teaspoon to us-cupTeaspoon (US) to Cup (US)
- us-teaspoon to uk-fluid-ounceTeaspoon (US) to Fluid Ounce (UK)
- us-teaspoon to uk-tablespoonTeaspoon (US) to Tablespoon (UK)
- us-teaspoon to uk-teaspoonTeaspoon (US) to Teaspoon (UK)
- uk-gallon to cubic-inchGallon (UK) to Cubic Inches
- uk-quart to cubic-inchQuart (UK) to Cubic Inches