Convert volume units — liters, gallons, cups, milliliters, cubic meters, barrels and more.
| Unit | Name | Value |
|---|---|---|
| 0.001 tsp | 4.92892e-06 L | |
| 0.01 tsp | 4.92892e-05 L | |
| 0.1 tsp | 0.000492892 L | |
| 1 tsp | 0.00492892 L | |
| 5 tsp | 0.0246446 L | |
| 10 tsp | 0.0492892 L | |
| 50 tsp | 0.246446 L | |
| 100 tsp | 0.492892 L | |
| 1000 tsp | 4.92892 L |
Common teaspoon values converted to liter — factor: 1 tsp = 0.004929 L
| Teaspoon (tsp) | Liter (L) | Context |
|---|---|---|
| 0.25 tsp | 0.001232 L | Pinch |
| 0.5 tsp | 0.002464 L | Half teaspoon |
| 1 tsp | 0.004929 L | Teaspoon |
| 2 tsp | 0.009858 L | Two teaspoons |
| 3 tsp | 0.01479 L | Tablespoon |
| 6 tsp | 0.02957 L | 2 tablespoons |
| 12 tsp | 0.05915 L | Quarter cup |
| 24 tsp | 0.1183 L | Half cup |
| 48 tsp | 0.2366 L | One cup |
| 96 tsp | 0.4732 L | One pint |
| 192 tsp | 0.9464 L | One quart |
| 384 tsp | 1.893 L | Half gallon |
| 768 tsp | 3.785 L | One gallon |
| 1,536 tsp | 7.571 L | 2 gallons |
| 3,840 tsp | 18.93 L | 5 gallons |
Converting teaspoon to liter comes up frequently in cooking, chemistry, medicine, and engineering. A recipe written in metric units may need to be adapted for a kitchen using liter, or a laboratory protocol may specify volumes in teaspoon that need to be measured with equipment calibrated in liter.
In everyday use, knowing that 5 tsp = 0.02464 L and 10 tsp = 0.04929 L covers most common situations. For bulk calculations, 100 tsp = 0.4929 L is a useful anchor. The reverse conversion — liter back to teaspoon — uses the factor 202.9, so 1 L = 202.9 tsp.
All conversions use the internationally recognized factor of exactly 1 tsp = 0.004929 L. 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: Liter = Teaspoon × 0.00492892
Multiply any teaspoon value by 0.00492892 to get liter. One teaspoon equals 0.00492892 L.
Reverse: Teaspoon = Liter × 202.8842
1 tsp = 0.00492892 L. Memorize this for instant mental estimates.
Use 0.0049 as a quick mental factor. Multiply your teaspoons value by this to estimate liters.
To verify: multiply your result by 202.8842 to recover the original tsp value.
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 liter was introduced by the French metric system in 1793, defined as the volume of one kilogram of pure water at 4°C. The word derives from the older French unit litron, from Medieval Latin litra. It was redefined in 1964 as exactly 1 cubic decimeter.
France adopted the liter as part of revolutionary metric standardization, spreading across Europe with Napoleonic expansion. Today it is the standard unit for liquids in most of the world, from soda bottles to fuel pumps.
Interesting fact: A liter of water at 4°C weighs almost exactly 1 kilogram, which is why the kilogram was originally defined through it.