1 mL = 0.202884 tsp (milliliter → teaspoon)
1 mL = 0.202884 tsp
1 milliliter equals 0.202884 teaspoons. To convert milliliters to teaspoons, multiply the milliliter value by 0.202884. For quick reference: 1 mL = 0.202884 tsp, 5 mL = 1.01442 tsp, 10 mL = 2.02884 tsp, 100 mL = 20.2884 tsp.
Teaspoons = Milliliters × 0.202884Millilitres to US teaspoons divides by 4.92892 (1 US tsp = 4.92892 mL), universally rounded to 5 mL. A 5 mL medicine dose is one teaspoon; a 10 mL dose is two. Pharmacies supply a marked 5 mL oral syringe because kitchen teaspoons vary too much for reliable dosing. In baking the small absolute volumes mean the 5 mL rounding never changes the outcome, so the simple ÷5 mental shortcut is safe for recipes.
Parents dosing liquid children's medicine convert this way when a bottle's metric syringe marks millilitres but the package insert instructs teaspoons. 5 mL is 1.014 tsp, essentially the standard “one teaspoon” dose; 2.5 mL is 0.507 tsp; 10 mL is 2.029 tsp. Because household spoons vary wildly in real volume, paediatric guidance always says to use the dosing syringe provided rather than a kitchen teaspoon — this conversion is for reading labels, not for measuring the actual dose.
Start with your value in milliliters.
Multiply the milliliter value by 0.202884. This is the exact conversion factor from milliliters to teaspoons.
The product is your value in teaspoons. For example, 5 mL × 0.202884 = 1.01442 tsp.
The exact factor from milliliters to teaspoons is 0.202884.
Teaspoons = Milliliters × 0.202884
Fifty common reference values, hand-picked for skim utility. Use the calculator above for any value not listed.
| Milliliters (mL) | Teaspoons (tsp) |
|---|---|
| 0.1 mL | 0.020288 tsp |
| 0.25 mL | 0.050721 tsp |
| 0.5 mL | 0.10144 tsp |
| 1 mL | 0.20288 tsp |
| 1.5 mL | 0.30433 tsp |
| 2 mL | 0.40577 tsp |
| 2.5 mL | 0.50721 tsp |
| 3 mL | 0.60865 tsp |
| 4 mL | 0.81154 tsp |
| 5 mL | 1.0144 tsp |
| 6 mL | 1.2173 tsp |
| 7 mL | 1.4202 tsp |
| 8 mL | 1.6231 tsp |
| 9 mL | 1.826 tsp |
| 10 mL | 2.0288 tsp |
| 12 mL | 2.4346 tsp |
| 15 mL | 3.0433 tsp |
| 20 mL | 4.0577 tsp |
| 25 mL | 5.0721 tsp |
| 30 mL | 6.0865 tsp |
| 40 mL | 8.1154 tsp |
| 50 mL | 10.144 tsp |
| 60 mL | 12.173 tsp |
| 75 mL | 15.216 tsp |
| 100 mL | 20.288 tsp |
| 125 mL | 25.361 tsp |
| 150 mL | 30.433 tsp |
| 200 mL | 40.577 tsp |
| 250 mL | 50.721 tsp |
| 300 mL | 60.865 tsp |
| 400 mL | 81.154 tsp |
| 500 mL | 101.44 tsp |
| 600 mL | 121.73 tsp |
| 750 mL | 152.16 tsp |
| 1000 mL | 202.88 tsp |
| 1500 mL | 304.33 tsp |
| 2000 mL | 405.77 tsp |
| 2500 mL | 507.21 tsp |
| 3000 mL | 608.65 tsp |
| 4000 mL | 811.54 tsp |
| 5000 mL | 1014.4 tsp |
| 7500 mL | 1521.6 tsp |
| 10000 mL | 2028.8 tsp |
| 15000 mL | 3043.3 tsp |
| 20000 mL | 4057.7 tsp |
| 25000 mL | 5072.1 tsp |
| 30000 mL | 6086.5 tsp |
| 40000 mL | 8115.4 tsp |
| 50000 mL | 10144 tsp |
| 100000 mL | 20288 tsp |
A standard medicine dropper is 1 mL. A teaspoon holds 5 mL. A typical wine glass pour is 150 mL. In teaspoons, that gives you: 1 mL = 0.202884 tsp, 10 mL = 2.02884 tsp, 100 mL = 20.2884 tsp.
The milliliter (mL) is a metric unit of volume equal to one-thousandth of a liter, or one cubic centimeter. It is the everyday unit for medication dosing, beverage sizes outside the US, and cooking in most of the world. Note that a US fluid ounce is 29.5735 mL, while a UK fluid ounce is 28.4131 mL.
The US teaspoon equals 1/3 of a US tablespoon, or about 4.929 mL. The metric teaspoon (used on most non-US nutrition labels) is exactly 5 mL — close enough that you can substitute freely in cooking but not in precise dosing.
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