How to Convert Teaspoons to Litres (tsp to L)
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 litres by hand, with examples and a quick-reference table.
The conversion
To convert teaspoons to litres, multiply the value by 0.00492892. To go the other way, divide by the same number (or multiply by 202.884201813). For a quick estimate, multiply by about 0.0049.
Litres = teaspoons × 0.00492892
Worked examples
- 3 tsp = 0.014787 L
- 12.5 tsp = 0.061611 L
- 75 tsp = 0.369669 L
Teaspoons to Litres table
| Teaspoons | Litres |
|---|---|
| 1 tsp | 0.004929 L |
| 2 tsp | 0.009858 L |
| 5 tsp | 0.024645 L |
| 10 tsp | 0.049289 L |
| 20 tsp | 0.098578 L |
| 25 tsp | 0.123223 L |
| 50 tsp | 0.246446 L |
| 100 tsp | 0.492892 L |
| 250 tsp | 1.2322 L |
| 500 tsp | 2.4645 L |
| 1,000 tsp | 4.9289 L |
Common questions
Is tsp to L 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 Litres to Teaspoons converter.
Mistakes to avoid
Rounding the factor too early
Using 3 instead of 3.28 for feet per metre introduces an error of almost 9% before you have started.
Mixing similar-sounding units
US and imperial gallons, pints and tons are different sizes, and decimal kilobytes differ from binary kibibytes.
Dropping the units
A bare number without a unit is easy to misread later. Always write the unit with the result.
Background
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.
A conversion table is handy for common values, but a calculator is faster and avoids interpolation errors for anything in between.
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.
For any value, use the Teaspoons to Litres Converter or browse all volume converters.
Run your own numbers: Teaspoons to Litres Converter