US teaspoon to Milliliter Converter
Type a value — the answer appears instantly. 1 tsp = 4.92892 ml.
Reviewed by the OmniCalc teamMethod verified 2026-07-01
4.92892 milliliters
= 0.00492892 L= 0.00130208 gal
equals 4.92892 millilitersFormula: ml = tsp × 4.9289216
US teaspoon to Milliliter formula
ml = tsp × 4.9289216
Convert 5 US teaspoons to milliliters
- Start with 5 US teaspoons.
- Multiply by the conversion factor: 5 × 4.92892 = 24.6446.
- So 5 tsp = 24.6446 ml.
US teaspoon to Milliliter conversion table
| US teaspoons (tsp) | Milliliters (ml) |
|---|---|
| 0.01 tsp | 0.0492892 ml |
| 0.1 tsp | 0.492892 ml |
| 0.25 tsp | 1.23223 ml |
| 0.5 tsp | 2.46446 ml |
| 1 tsp | 4.92892 ml |
| 2 tsp | 9.85784 ml |
| 3 tsp | 14.7868 ml |
| 4 tsp | 19.7157 ml |
| 5 tsp | 24.6446 ml |
| 6 tsp | 29.5735 ml |
| 7 tsp | 34.5025 ml |
| 8 tsp | 39.4314 ml |
| 9 tsp | 44.3603 ml |
| 10 tsp | 49.2892 ml |
| 15 tsp | 73.9338 ml |
| 20 tsp | 98.5784 ml |
| 25 tsp | 123.223 ml |
| 30 tsp | 147.868 ml |
| 40 tsp | 197.157 ml |
| 50 tsp | 246.446 ml |
| 75 tsp | 369.669 ml |
| 100 tsp | 492.892 ml |
| 250 tsp | 1,232.23 ml |
| 500 tsp | 2,464.46 ml |
| 1,000 tsp | 4,928.92 ml |
| 5,000 tsp | 24,644.6 ml |
| 10,000 tsp | 49,289.2 ml |
Unit definitions
What is a US teaspoon?
The US teaspoon is a customary cooking measure of one sixth of a US fluid ounce, about 4.93 millilitres. Three teaspoons make one tablespoon. It is a staple unit in American recipes.
What is a milliliter?
The millilitre is one thousandth of a litre and is equal to one cubic centimetre. It is the everyday metric unit for liquids, cooking, and medicine dosing in most countries. A teaspoon holds about five millilitres.
Frequently asked questions
How many milliliters are in one US teaspoon?
One US teaspoon equals 4.92892 milliliters (1 tsp = 4.92892 ml).
How do I convert US teaspoons to milliliters?
Multiply the value in US teaspoons by 4.92892. For example, 10 tsp × 4.92892 = 49.2892 ml.
Which is bigger — a US teaspoon or a milliliter?
A US teaspoon is bigger: one US teaspoon contains 4.92892 milliliters.
Is this US teaspoon to milliliter converter free?
Yes — the converter is free, works offline once loaded, and computes instantly in your browser without sending your numbers to a server.
Conversion factors follow international definitions (SI / NIST). Last verified 2026-07-01.