Convert volume units — liters, gallons, cups, milliliters, cubic meters, barrels and more.
| Unit | Name | Value |
|---|---|---|
| 0.001 ml | 0.000202884 tsp | |
| 0.01 ml | 0.00202884 tsp | |
| 0.1 ml | 0.0202884 tsp | |
| 1 ml | 0.202884 tsp | |
| 5 ml | 1.01442 tsp | |
| 10 ml | 2.02884 tsp | |
| 50 ml | 10.1442 tsp | |
| 100 ml | 20.2884 tsp | |
| 1000 ml | 202.884 tsp |
Common milliliter values converted to teaspoon — factor: 1 mL = 0.2029 tsp
| Milliliter (mL) | Teaspoon (tsp) | Context |
|---|---|---|
| 1 mL | 0.2029 tsp | Eyedrop |
| 5 mL | 1.014 tsp | Teaspoon |
| 10 mL | 2.029 tsp | Tablespoon |
| 15 mL | 3.043 tsp | Tablespoon |
| 30 mL | 6.087 tsp | Shot glass |
| 60 mL | 12.17 tsp | Double shot |
| 100 mL | 20.29 tsp | Half cup |
| 150 mL | 30.43 tsp | Half cup |
| 240 mL | 48.69 tsp | One cup |
| 355 mL | 72.02 tsp | Soda can |
| 500 mL | 101.4 tsp | Water bottle |
| 750 mL | 152.2 tsp | Wine bottle |
| 1,000 mL | 202.9 tsp | One liter |
| 1,500 mL | 304.3 tsp | Large bottle |
| 3,785 mL | 767.9 tsp | One gallon |
Converting milliliter to teaspoon comes up frequently in cooking, chemistry, medicine, and engineering. A recipe written in metric units may need to be adapted for a kitchen using teaspoon, or a laboratory protocol may specify volumes in milliliter that need to be measured with equipment calibrated in teaspoon.
In everyday use, knowing that 5 mL = 1.014 tsp and 10 mL = 2.029 tsp covers most common situations. For bulk calculations, 100 mL = 20.29 tsp is a useful anchor. The reverse conversion — teaspoon back to milliliter — uses the factor 4.929, so 1 tsp = 4.929 mL.
All conversions use the internationally recognized factor of exactly 1 mL = 0.2029 tsp. 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: Teaspoon = Milliliter × 0.2028842
Multiply any milliliter value by 0.2028842 to get teaspoon. One milliliter equals 0.2028842 tsp.
Reverse: Milliliter = Teaspoon × 4.92892
mL ÷ 4.929 = teaspoons. Round to ÷ 5 (1.4% high).
One teaspoon ≈ 5 mL — standard medicine dose reference.
5 mL = 1 tsp, 15 mL = 1 tbsp, 240 mL = 1 cup.
Measures liquid medication doses, compound quantities, and vial volumes in milliliters for precise dispensing.
Scales extracts, food colorings, and liquid flavorings in mL for consistent batch replication.
Pipettes reagents, prepares serial dilutions, and calibrates instruments using mL graduations.
Calculates weight-based medication doses converted to mL for syringe administration.
Blends fragrance accords in small mL batches with high precision and high ingredient costs.
Develops skincare products in 50-500 mL batches before scaling to full production.
The milliliter is one-thousandth of a liter, in use since the metric system was codified in France in 1795. The milli- prefix (from Latin mille, thousand) was standardized as part of the original SI prefix system.
Milliliters are the workhorse of medicine and cooking: syringes, dropper bottles, and nutritional labels all rely on mL for precise small-volume measurement. A standard US teaspoon is approximately 4.929 mL.
Interesting fact: The milliliter is numerically identical to the cubic centimeter (cm³), so 1 mL = 1 cm³ exactly. This equivalence is widely used in medicine, where a 5 cc syringe holds exactly 5 mL.
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.