Convert volume units — liters, gallons, cups, milliliters, cubic meters, barrels and more.
| Unit | Name | Value |
|---|---|---|
| 0.001 tsp | 1.30208e-06 gal | |
| 0.01 tsp | 1.30208e-05 gal | |
| 0.1 tsp | 0.000130208 gal | |
| 1 tsp | 0.00130208 gal | |
| 5 tsp | 0.00651042 gal | |
| 10 tsp | 0.0130208 gal | |
| 50 tsp | 0.0651042 gal | |
| 100 tsp | 0.130208 gal | |
| 1000 tsp | 1.30208 gal |
Common teaspoon values converted to us gallon — factor: 1 tsp = 0.001302 gal
| Teaspoon (tsp) | US Gallon (gal) | Context |
|---|---|---|
| 0.25 tsp | 0.0003255 gal | Pinch |
| 0.5 tsp | 0.000651 gal | Half teaspoon |
| 1 tsp | 0.001302 gal | Teaspoon |
| 2 tsp | 0.002604 gal | Two teaspoons |
| 3 tsp | 0.003906 gal | Tablespoon |
| 6 tsp | 0.007813 gal | 2 tablespoons |
| 12 tsp | 0.01563 gal | Quarter cup |
| 24 tsp | 0.03125 gal | Half cup |
| 48 tsp | 0.0625 gal | One cup |
| 96 tsp | 0.125 gal | One pint |
| 192 tsp | 0.25 gal | One quart |
| 384 tsp | 0.5 gal | Half gallon |
| 768 tsp | 1 gal | One gallon |
| 1,536 tsp | 2 gal | 2 gallons |
| 3,840 tsp | 5 gal | 5 gallons |
Converting teaspoon to us gallon comes up frequently in cooking, chemistry, medicine, and engineering. A recipe written in metric units may need to be adapted for a kitchen using us gallon, or a laboratory protocol may specify volumes in teaspoon that need to be measured with equipment calibrated in us gallon.
In everyday use, knowing that 5 tsp = 0.00651 gal and 10 tsp = 0.01302 gal covers most common situations. For bulk calculations, 100 tsp = 0.1302 gal is a useful anchor. The reverse conversion — us gallon back to teaspoon — uses the factor 768, so 1 gal = 768 tsp.
All conversions use the internationally recognized factor of exactly 1 tsp = 0.001302 gal. Calculations are performed in IEEE 754 double-precision floating point, giving accuracy to at least 8 significant figures — more than sufficient for any practical application.
Formula: US Gallon = Teaspoon × 0.0013020835
Multiply any teaspoon value by 0.0013020835 to get us gallon. One teaspoon equals 0.0013020835 gal.
Reverse: Teaspoon = US Gallon × 767.99989
Teaspoons ÷ 768 = US gallons. Exact.
3 tsp = 1 tbsp, 48 tsp = 1 cup, 768 tsp = 1 gal.
Gallons × 768 = tsp.
Measures baking powder, baking soda, salt, and spices in teaspoons, the backbone of baking.
Administers children's liquid medicine in teaspoon doses as per OTC label instructions.
Tests flavor compound thresholds using teaspoon additions in sensory evaluation panels.
Adds clarifying agents and pH adjusters in teaspoon quantities to fermentation batches.
Formulates serums and toners using teaspoon measurements for small test batches.
Doses water conditioners and fertilizers in teaspoons for planted tanks and reef systems.
The US teaspoon is exactly one-third of a tablespoon, 4.92892 mL. It was standardized in the US in the early 20th century partly to address inconsistent home medication dosing.
Teaspoons are the smallest standard cooking measure in the US system, used for spices, leaveners, and flavorings. A medical teaspoon dose conventionally means 5 mL.
Interesting fact: The teaspoon is behind one of science's most cited comparisons: the entire Pacific Ocean would fill roughly 7.1 × 10²³ teaspoons.
The US liquid gallon is defined as exactly 231 cubic inches, or 3.785411784 liters. It traces its origins to the Queen Anne wine gallon of 1707, which American colonies adopted.
The US gallon differs from the UK Imperial gallon by about 16.5%. This matters for fuel economy: a US MPG figure is lower than the equivalent UK MPG for the same car.
Interesting fact: The United States, Liberia, and Myanmar are the only countries using the US gallon as a primary everyday volume unit.