Tablespoon (US) to Teaspoon (UK) Converter
Volume · unit-converter
Convert Tablespoon (US) to Teaspoon (UK) with a fixed input and output unit, step-by-step formula line, and reference tables. All calculations use liter-based factors (US fluid measures, imperial UK units, SI cubic meters).
Calculator
From: Tablespoon (US) (tbsp)
To: Teaspoon (UK) (uktsp)
About Tablespoon (US)
The US tablespoon is 1/2 US fluid ounce (about 14.7868 ml). US recipes use tablespoons for cooking volumes.
About Teaspoon (UK)
The UK teaspoon is smaller than many US teaspoons; this tool uses the liter-based UK teaspoon factor from the shared table.
How to convert tablespoons (us) to teaspoons (uk)
1 tablespoon (us) is equal to 3.12252819235849 teaspoon (uk):
1 tbsp = (0.01478676478125 L ÷ 0.004735510416667 L) uktsp = 3.12252819235849 uktsp
Each tablespoon (us) is defined as 0.01478676478125 L and each teaspoon (uk) as 0.004735510416667 L, so one tbsp equals 0.01478676478125 ÷ 0.004735510416667 uktsp = 3.12252819235849 uktsp.
Let V(tbsp) be the numeric value of the same volume measured in Tablespoon (US) (tbsp), and V(uktsp) the value in Teaspoon (UK) (uktsp). Then:
V(uktsp) = V(tbsp) × (0.01478676478125 / 0.004735510416667)
Equivalently, divide by how many tbsp fit into one uktsp (liters per uktsp divided by liters per tbsp):
V(uktsp) = V(tbsp) ÷ 0.32025331346798
Or: teaspoon (uk) = tablespoon (us) ÷ 0.32025331346798
Examples
Example #1: Convert 20 tbsp to teaspoon (uk)
20 tbsp = 20 tbsp × (0.01478676478125/0.004735510416667) uktsp = 62.4505638472 uktsp
20 tbsp = 20 tbsp ÷ 0.32025331346798 = 62.4505638472 uktsp
Example #2: Convert 50 tbsp to teaspoon (uk)
50 tbsp = 50 tbsp × (0.01478676478125/0.004735510416667) uktsp = 156.126409618 uktsp
50 tbsp = 50 tbsp ÷ 0.32025331346798 = 156.126409618 uktsp
Summary
To convert Tablespoon (US) to Teaspoon (UK), multiply the value in tbsp by the ratio of liters per tbsp divided by liters per uktsp. Equivalently: value_uktsp = value_tbsp × (0.01478676478125 / 0.004735510416667). Numerically, 1 tbsp equals 3.1225281923584887 uktsp.
Relationship context
You are converting between US customary fluid / volume (Tablespoons (US)) and UK imperial fluid / volume (Teaspoons (UK)). US and UK fluid measures differ (gallons, ounces, tablespoons); metric liters and cubic meters align with SI. The numeric factor used here is 3.122528e+0.
Conversion tables
| Tablespoon (US) (tbsp) | Teaspoon (UK) (uktsp) |
|---|---|
| 0.1 | 0.3122528192 |
| 1 | 3.1225281924 |
| 2 | 6.2450563847 |
| 3 | 9.3675845771 |
| 4 | 12.4901127694 |
| 5 | 15.6126409618 |
| 6 | 18.7351691542 |
| 7 | 21.8576973465 |
| 8 | 24.9802255389 |
| 9 | 28.1027537312 |
| Tablespoon (US) (tbsp) | Teaspoon (UK) (uktsp) |
|---|---|
| 10 | 31.2252819236 |
| 20 | 62.4505638472 |
| 30 | 93.6758457708 |
| 40 | 124.901127694 |
| 50 | 156.126409618 |
| 60 | 187.351691542 |
| 70 | 218.576973465 |
| 80 | 249.802255389 |
| 90 | 281.027537312 |
| 100 | 312.252819236 |