How to Convert Teaspoons to Millilitres (tsp to ml)
Volume conversions help with baking from American recipes, comparing petrol prices quoted per gallon abroad with pump prices per litre here, and reading PUB water bills in cubic metres. This guide shows how to convert teaspoons into millilitres by hand, with examples and a quick-reference table.
The conversion
To convert teaspoons to millilitres, multiply the value by 4.92892. To go the other way, divide by the same number (or multiply by 0.2028842018). For a quick estimate, multiply by about 4.9.
Millilitres = teaspoons × 4.92892
Worked examples
- 3 tsp = 14.7868 ml
- 12.5 tsp = 61.6115 ml
- 75 tsp = 369.669 ml
Teaspoons to Millilitres table
| Teaspoons | Millilitres |
|---|---|
| 1 tsp | 4.9289 ml |
| 2 tsp | 9.8578 ml |
| 5 tsp | 24.6446 ml |
| 10 tsp | 49.2892 ml |
| 20 tsp | 98.5784 ml |
| 25 tsp | 123.223 ml |
| 50 tsp | 246.446 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 |
Common questions
Is tsp to ml exact?
The factors used here are the internationally defined values where they exist; results are rounded for display only.
How do I convert back?
Use the Millilitres to Teaspoons converter.
Mistakes to avoid
Dropping the units
A bare number without a unit is easy to misread later. Always write the unit with the result.
Multiplying when you should divide
Converting to a smaller unit gives a bigger number, and converting to a larger unit gives a smaller one. If your answer moves the wrong way, you have inverted the factor.
Mixing similar-sounding units
US and imperial gallons, pints and tons are different sizes, and decimal kilobytes differ from binary kibibytes.
Background
Unit conversion is simply multiplication by a fixed ratio. The ratio between two units of the same quantity never changes, so once you know it you can convert any value in either direction.
Singapore adopted the metric system in the 1970s, replacing imperial units and traditional Chinese measures in most official uses. Metric units are now standard in schools, trade and government, but older units survive in property, markets and imported goods.
Many conversion factors are exact by definition. The inch has been defined as exactly 2.54 centimetres since 1959, and the pound as exactly 0.45359237 kilograms, so conversions involving them can be as precise as you need.
For any value, use the Teaspoons to Millilitres Converter or browse all volume converters.
Run your own numbers: Teaspoons to Millilitres Converter