Convert Teaspoon to Milliliter (tsp → ml)
The teaspoon is the smallest standard cooking spoon, equal to 5 milliliters and used worldwide in recipes.
Teaspoon to Milliliter Conversion Table
10 common values| Teaspoon | Milliliter |
|---|---|
| 1 tsp | 4.92892 ml |
| 2 tsp | 9.85784 ml |
| 5 tsp | 24.6446 ml |
| 10 tsp | 49.2892 ml |
| 20 tsp | 98.5784 ml |
| 50 tsp | 246.446 ml |
| 100 tsp | 492.892 ml |
| 200 tsp | 985.784 ml |
| 500 tsp | 2,464.46 ml |
| 1,000 tsp | 4,928.92 ml |
How to Convert Teaspoon to Milliliter Manually
Step by StepConverting teaspoons to milliliters is straightforward: multiply by the conversion factor. Follow these three steps to do it by hand or in your head.
- 1Take your value in teaspoonsStart with the number of teaspoons (tsp) you want to convert.
- 2Multiply by 4.92892The conversion factor from tsp to ml is 4.92892. Multiply your value by this number.
- 3Read the result in millilitersThe result is your value in milliliters (ml).
Formula
Multiply the value in teaspoons by 4.92892. For the reverse direction, multiply by 0.202884.
ml = tsp × 4.92892tsp = ml × 0.202884Tips
Use these in everyday conversions- 1 tsp = 5 ml (practical); 4.929 ml (US legal).
- 3 tsp = 1 tbsp universally.
- Use a proper measuring spoon — household teaspoons vary 3–8 ml.
Common Mistakes
Avoid these- Using a regular cutlery teaspoon for medication — can over- or under-dose by 30–60%.
- Mixing tsp and tbsp — 3× difference.
- Assuming "a pinch" or "a dash" is reproducible — it varies 0.1 to 0.5 ml.
About Teaspoon and Milliliter
What is the Teaspoon?
The teaspoon equals exactly 5 milliliters (international culinary standard) or about 4.929 mL (US strict definition based on 1/3 of a tablespoon). The teaspoon is the smallest standard cooking measure, used worldwide for spices, baking soda, vanilla extract, salt, and small ingredient quantities. A flat (level) teaspoon is the recipe convention; rounded or heaping teaspoons are inconsistent and avoided in serious cooking. The teaspoon is also a medical unit: many liquid medications are dosed in teaspoons (5 mL standard). The teaspoon relates to the tablespoon (1 tbsp = 3 tsp), the cup (48 tsp = 1 cup), the milliliter (1 tsp = 5 mL conventional), and the fluid ounce (6 tsp = 1 fl oz). Standardized 5-mL measuring spoons are available globally to avoid the variability of household teaspoons (which range from 2 to 7 mL).
- Baking powder, salt and spices in recipes
- Over-the-counter liquid-medicine dosing
- Coffee and tea sweetener measurements
1 teaspoon of sugar = 4 g = 16 calories. Salt in a recipe often ½ to 1 tsp per 500 g food.
What is the Milliliter?
The milliliter equals one thousandth of a liter (0.001 L) and is the standard small-volume unit for cooking, pharmaceuticals, cosmetics, and laboratory work. One milliliter is exactly 1 cubic centimeter (1 cm³), a convenient relationship: 1 mL of pure water weighs 1 gram. The milliliter is the universal unit on medicine bottles (a typical cough syrup dose is 5 mL), cosmetics (a perfume bottle is 50–100 mL), and recipe measurements outside North America (a tablespoon is 15 mL, a teaspoon is 5 mL). Medical syringes are calibrated in mL, and IV drip rates are computed in mL per hour. The milliliter relates to the liter (1,000 mL = 1 L), the cubic centimeter (1 mL = 1 cm³ = 1 cc), the teaspoon (1 tsp = 5 mL), and the US fluid ounce (1 fl oz ≈ 29.57 mL).
- Liquid medication dosing in syringes
- Precise cooking and baking measurements
- Laboratory reagent measurement
A teaspoon holds about 5 ml. An espresso shot is 25–30 ml. An insulin pen delivers 0.1 ml increments.