How to Convert Tablespoons to Teaspoons (tbsp to tsp)
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 tablespoons into teaspoons by hand, with examples and a quick-reference table.
The conversion
To convert tablespoons to teaspoons, multiply the value by 3.0000081154. To go the other way, divide by the same number (or multiply by 0.3333324316). For a quick estimate, multiply by about 3.
Teaspoons = tablespoons × 3.0000081154
Worked examples
- 3 tbsp = 9 tsp
- 12.5 tbsp = 37.5001 tsp
- 75 tbsp = 225.0006 tsp
Tablespoons to Teaspoons table
| Tablespoons | Teaspoons |
|---|---|
| 1 tbsp | 3 tsp |
| 2 tbsp | 6 tsp |
| 5 tbsp | 15 tsp |
| 10 tbsp | 30.0001 tsp |
| 20 tbsp | 60.0002 tsp |
| 25 tbsp | 75.0002 tsp |
| 50 tbsp | 150.0004 tsp |
| 100 tbsp | 300.0008 tsp |
| 250 tbsp | 750.002 tsp |
| 500 tbsp | 1,500 tsp |
| 1,000 tbsp | 3,000.01 tsp |
Common questions
Is tbsp to tsp 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 Teaspoons to Tablespoons 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.
Dropping the units
A bare number without a unit is easy to misread later. Always write the unit with the result.
Mixing similar-sounding units
US and imperial gallons, pints and tons are different sizes, and decimal kilobytes differ from binary kibibytes.
Background
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.
For everyday use, three or four significant figures are usually enough. Engineering, science and trade documents may need more, and rounding should happen only at the end of a calculation.
Writing the units next to every number while you work is the simplest way to avoid mistakes. If the units do not cancel to leave the one you want, the calculation is set up wrongly.
For any value, use the Tablespoons to Teaspoons Converter or browse all volume converters.
Run your own numbers: Tablespoons to Teaspoons Converter