Convert Cubic Inch to Metric Teaspoon
Convert cubic inches to metric teaspoons instantly. 1 cubic inch = 3.2774128 metric teaspoon — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Metric Teaspoon to Cubic Inch converter for the reverse conversion.
Units explained
Cubic Inch
A cubic inch is the volume of a cube one inch on a side (16.387 mL).
Derived by cubing the international inch (25.4 mm).
Used for engine displacement and small-part volumes.
1959 yard agreement.
Metric Teaspoon
A metric teaspoon is exactly 5 milliliters.
Adopted as the standard metric small cooking measure.
Universal in metric recipes and liquid medicine dosing.
Metrication.
Cubic Inch to Metric Teaspoon conversion formula
The relationship between cubic inches and metric teaspoons:
To convert cubic inches to metric teaspoons, multiply the value in cubic inches by 3.2774128. To reverse, multiply metric teaspoons by 0.3051187205.
How to use this converter
Type a value into the calculator. The result in metric teaspoons updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Metric Teaspoon to Cubic Inch converter for the reverse direction.
Step-by-step: convert cubic inches to metric teaspoons
- Write down the value in cubic inches (in³).
- Multiply that value by the factor 3.2774128.
- The product is the equivalent value in metric teaspoons (tsp).
- To reverse, multiply the metric teaspoon value by 0.3051187205.
Worked examples
Example 1 — Convert 1 in³ to tsp:
1 × 3.2774128 = 3.2774128 tsp
Example 2 — Convert 100 in³ to tsp:
100 × 3.2774128 = 327.74128 tsp
Real-world example — Hair-width scale measurements
A 70-cubic inch measurement (about the diameter of a human hair) is the kind of value materials engineers regularly express in adjacent micro-scale units like metric teaspoons for direct comparison across supplier datasheets.
70 in³ × 3.2774128 = 229.418896 tsp
Real-world example — Paper and film thicknesses
At the thickness of office paper (roughly 3 cubic inches), converting between sub-millimeter units is routine for packaging and printing buyers comparing quotes from metric and US suppliers.
3 in³ × 3.2774128 = 9.8322384 tsp
Real-world example — Plastic-film thickness alternates
A 150-cubic inch plastic film converts cleanly to metric teaspoons — useful for packaging buyers reconciling supplier datasheets across metric and US measurement systems.
150 in³ × 3.2774128 = 491.61192 tsp
Cubic Inch to Metric Teaspoon conversion table
Standard reference values for converting cubic inches to metric teaspoons:
| Cubic Inch [in³] | Metric Teaspoon [tsp] |
|---|---|
| 0.01 | 0.032774128 |
| 0.1 | 0.32774128 |
| 1 | 3.2774128 |
| 2 | 6.5548256 |
| 3 | 9.8322384 |
| 4 | 13.1096512 |
| 5 | 16.387064 |
| 10 | 32.774128 |
| 20 | 65.548256 |
| 30 | 98.322384 |
| 40 | 131.096512 |
| 50 | 163.87064 |
| 100 | 327.74128 |
| 500 | 1638.7064 |
| 1000 | 3277.4128 |
Frequently asked questions
How many metric teaspoons is 1 cubic inch?
How do I convert cubic inches to metric teaspoons?
How do I convert metric teaspoons back to cubic inches?
How many metric teaspoons is 100 cubic inches?
Popular volume unit conversions
Convert Cubic Inch to other volume units
Show all Cubic Inch conversions
Metric / SI (8 units)
US Customary (Liquid) (8 units)
Imperial (UK) (4 units)
Cubic (length-derived) (2 units)
Cooking / Culinary (3 units)
Sources & references
Conversion factor (1 in³ = 3.2774128 tsp) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Hydrographic Organization — Resolution on the Nautical Mile
International authority that standardised the nautical mile at exactly 1852 m in 1929 — the value adopted worldwide for sea and air navigation.