tsp to in³ — convert US teaspoons to cubic inches
Exact 1 ÷ 3.324675 = 0.30078125
1 US teaspoon in other units
| Millilitres | 4.928922 | mL |
|---|---|---|
| Litres | 0.004928921594 | L |
| Cubic metres | 0.000004928922 | m³ |
| US tablespoons | 0.33333333 | tbsp |
| US fluid ounces | 0.16666667 | US fl oz |
| US cups | 0.02083333 | US cup |
| US pints | 0.01041667 | US pt |
| US quarts | 0.005208333333 | US qt |
| US gallons | 0.001302083333 | US gal |
| Imperial fluid ounces | 0.17347379 | imp fl oz |
| Imperial pints | 0.008673689423 | imp pt |
| Imperial gallons | 0.001084211178 | imp gal |
| Cubic feet | 0.000174063223 | ft³ |
| Cubic inches | 0.30078125 | in³ |
| Oil barrels | 0.000031001984 | bbl |
tsp to in³ at a glance
| US teaspoons | Cubic inches |
|---|---|
| 1 tsp | 0.30078125 in³ |
| 2 tsp | 0.6015625 in³ |
| 3 tsp | 0.90234375 in³ |
| 5 tsp | 1.503906 in³ |
| 10 tsp | 3.007813 in³ |
| 20 tsp | 6.015625 in³ |
| 25 tsp | 7.519531 in³ |
| 50 tsp | 15.039063 in³ |
| 100 tsp | 30.078125 in³ |
| 250 tsp | 75.195313 in³ |
| 500 tsp | 150.390625 in³ |
| 1,000 tsp | 300.78125 in³ |
How to convert US teaspoons to cubic inches
Multiply by 0.30078125 — one US teaspoon is 0.30078125 cubic inches. That factor is exact: it comes from the definition of the units rather than from a measurement, so it will not change and does not need rounding.
Working 1 ÷ 3.324675 = 0.30078125
What these units are
The US teaspoon and the cubic inch are covered in the volume unit guide, along with every other unit on this page.
Questions
How many cubic inches are in a US teaspoon?
One US teaspoon is 0.30078125 cubic inches. This figure is exact — it comes from the definition of the unit, not a measurement.
What is 1 US teaspoon in cubic inches?
1 US teaspoon is 0.30078125 cubic inches. The working is 1 ÷ 3.324675 = 0.30078125.
Is a gallon the same in the US and the UK?
No. A US gallon is 3.785411784 litres; an Imperial gallon is 4.54609 litres. The Imperial one is about 20% larger, which is why US and UK fuel economy figures for the same car look different.
Which pint does a recipe mean?
Follow the recipe's origin. A US pint is 16 US fluid ounces, roughly 473 mL. An Imperial pint is 20 Imperial fluid ounces, roughly 568 mL. A British pint of milk is noticeably more than an American one.
Can I convert litres to kilograms here?
Not directly — that depends on what you are measuring. Volume becomes mass only once you know the density. Water is the convenient case: one litre is almost exactly one kilogram. Oil, flour and alcohol are all lighter.
Why is a US cup not 250 mL?
The US legal cup is 240 mL and the customary cup used in recipes is about 236.6 mL. The round 250 mL cup is the Australian and metric standard. In baking the gap is enough to notice.