The teaspoon
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.
10 Teaspoons to Milliliters
10 tsp = 49.2892 mL (teaspoon → milliliter)
10 tsp = 49.2892 mL
10 teaspoons (tsp) equals 49.2892 milliliters (mL). The conversion uses the exact factor 4.92892: 10 × 4.92892 = 49.2892.
Formula
Milliliters = Teaspoons × 4.92892Quick
10 tsp in context
How 10 teaspoons compares to its arithmetic neighbours, converted to milliliters.
| Relation | teaspoons | milliliters |
|---|---|---|
| ÷10 | 1 tsp | 4.92892 mL |
| ÷2 (half) | 5 tsp | 24.6446 mL |
| ×1 (this value) | 10 tsp | 49.2892 mL |
| ×2 (double) | 20 tsp | 98.5784 mL |
| ×5 | 50 tsp | 246.446 mL |
| ×10 | 100 tsp | 492.892 mL |
When to use teaspoons → milliliters
US teaspoons to millilitres multiplies by 4.92892 (1 US tsp = 4.92892 mL), universally rounded to 5 mL in cooking and medicine. A 5 mL medicine dose is one level teaspoon, though kitchen teaspoons vary enough that pharmacies supply a 5 mL oral syringe for accuracy. Three teaspoons make one tablespoon (14.79 mL). For baking leaveners and salt, the small absolute volumes mean the rounding to 5 mL rarely changes the result.
Paediatric and veterinary dosing instructions printed in teaspoons get converted to millilitres to match the graduated oral syringe that actually ships with the medication. 1 tsp is 4.929 mL, commonly rounded to 5 mL on packaging for simplicity; 2 tsp is 9.858 mL; 0.5 tsp is 2.465 mL. Because pharmacies round the “standard teaspoon” to a clean 5 mL for dosing purposes, always follow the syringe markings on the package rather than converting the true 4.929 mL teaspoon value yourself.
How to convert teaspoons to milliliters
Take your value
Start with your value in teaspoons.
Multiply by 4.92892
Multiply the teaspoon value by 4.92892. This is the exact conversion factor from teaspoons to milliliters.
Read the result
The product is your value in milliliters. For example, 5 tsp × 4.92892 = 24.6446 mL.
Conversion formula
The exact factor from teaspoons to milliliters is 4.92892.
Milliliters = Teaspoons × 4.92892
Teaspoons to Milliliters conversion table
Fifty common reference values, hand-picked for skim utility. Use the calculator above for any value not listed.
| Teaspoons (tsp) | Milliliters (mL) |
|---|---|
| 0.1 tsp | 0.49289 mL |
| 0.25 tsp | 1.2322 mL |
| 0.5 tsp | 2.4645 mL |
| 1 tsp | 4.9289 mL |
| 1.5 tsp | 7.3934 mL |
| 2 tsp | 9.8578 mL |
| 2.5 tsp | 12.322 mL |
| 3 tsp | 14.787 mL |
| 4 tsp | 19.716 mL |
| 5 tsp | 24.645 mL |
| 6 tsp | 29.574 mL |
| 7 tsp | 34.502 mL |
| 8 tsp | 39.431 mL |
| 9 tsp | 44.36 mL |
| 10 tsp | 49.289 mL |
| 12 tsp | 59.147 mL |
| 15 tsp | 73.934 mL |
| 20 tsp | 98.578 mL |
| 25 tsp | 123.22 mL |
| 30 tsp | 147.87 mL |
| 40 tsp | 197.16 mL |
| 50 tsp | 246.45 mL |
| 60 tsp | 295.74 mL |
| 75 tsp | 369.67 mL |
| 100 tsp | 492.89 mL |
| 125 tsp | 616.12 mL |
| 150 tsp | 739.34 mL |
| 200 tsp | 985.78 mL |
| 250 tsp | 1232.2 mL |
| 300 tsp | 1478.7 mL |
| 400 tsp | 1971.6 mL |
| 500 tsp | 2464.5 mL |
| 600 tsp | 2957.4 mL |
| 750 tsp | 3696.7 mL |
| 1000 tsp | 4928.9 mL |
| 1500 tsp | 7393.4 mL |
| 2000 tsp | 9857.8 mL |
| 2500 tsp | 12322 mL |
| 3000 tsp | 14787 mL |
| 4000 tsp | 19716 mL |
| 5000 tsp | 24645 mL |
| 7500 tsp | 36967 mL |
| 10000 tsp | 49289 mL |
| 15000 tsp | 73934 mL |
| 20000 tsp | 98578 mL |
| 25000 tsp | 123223 mL |
| 30000 tsp | 147868 mL |
| 40000 tsp | 197157 mL |
| 50000 tsp | 246446 mL |
| 100000 tsp | 492892 mL |
Real-world reference
A standard pinch of salt is about 1/8 tsp. Most spice measurements in recipes are in teaspoons. In milliliters, that gives you: 1 tsp = 4.92892 mL, 10 tsp = 49.2892 mL, 100 tsp = 492.892 mL.
Frequently asked questions
- What is 10 teaspoons in milliliters?
- 10 teaspoons equals 49.2892 milliliters.
- What is half of 10 tsp in milliliters?
- Half of 10 tsp is 5 tsp, which equals 24.6446 milliliters.
- What is 20 tsp (double 10) in milliliters?
- 20 tsp equals 98.5784 milliliters — exactly twice the 49.2892 milliliters you get from 10 tsp, since the conversion is linear.
- Is 10 tsp a lot in milliliters?
- 10 tsp converts to 49.2892 milliliters. That's over a whole milliliter.
- How is 10 tsp to mL calculated?
- 10 tsp × 4.92892 (the exact teaspoon-to-milliliter factor) = 49.2892 mL.
About the teaspoon and the milliliter
The milliliter
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.
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