Teaspoon (US) to Tablespoon (UK) Converter
Volume · unit-converter
Convert Teaspoon (US) to Tablespoon (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: Teaspoon (US) (tsp)
To: Tablespoon (UK) (uktbsp)
About Teaspoon (US)
The US teaspoon is 1/6 US fluid ounce (about 4.9289 ml). US recipes use teaspoons for spices and small liquid amounts.
About Tablespoon (UK)
The UK tablespoon is often standardized near 15 ml in modern usage; this tool uses the liter-based UK tablespoon factor from the shared table.
How to convert teaspoons (us) to tablespoons (uk)
1 teaspoon (us) is equal to 0.34694757692875 tablespoon (uk):
1 tsp = (0.00492892159375 L ÷ 0.01420653125 L) uktbsp = 0.34694757692875 uktbsp
Each teaspoon (us) is defined as 0.00492892159375 L and each tablespoon (uk) as 0.01420653125 L, so one tsp equals 0.00492892159375 ÷ 0.01420653125 uktbsp = 0.34694757692875 uktbsp.
Let V(tsp) be the numeric value of the same volume measured in Teaspoon (US) (tsp), and V(uktbsp) the value in Tablespoon (UK) (uktbsp). Then:
V(uktbsp) = V(tsp) × (0.00492892159375 / 0.01420653125)
Equivalently, divide by how many tsp fit into one uktbsp (liters per uktbsp divided by liters per tsp):
V(uktbsp) = V(tsp) ÷ 2.88227982121165
Or: tablespoon (uk) = teaspoon (us) ÷ 2.88227982121165
Examples
Example #1: Convert 20 tsp to tablespoon (uk)
20 tsp = 20 tsp × (0.00492892159375/0.01420653125) uktbsp = 6.9389515386 uktbsp
20 tsp = 20 tsp ÷ 2.88227982121165 = 6.9389515386 uktbsp
Example #2: Convert 50 tsp to tablespoon (uk)
50 tsp = 50 tsp × (0.00492892159375/0.01420653125) uktbsp = 17.3473788464 uktbsp
50 tsp = 50 tsp ÷ 2.88227982121165 = 17.3473788464 uktbsp
Summary
To convert Teaspoon (US) to Tablespoon (UK), multiply the value in tsp by the ratio of liters per tsp divided by liters per uktbsp. Equivalently: value_uktbsp = value_tsp × (0.00492892159375 / 0.01420653125). Numerically, 1 tsp equals 0.34694757692874534 uktbsp.
Relationship context
You are converting between US customary fluid / volume (Teaspoons (US)) and UK imperial fluid / volume (Tablespoons (UK)). US and UK fluid measures differ (gallons, ounces, tablespoons); metric liters and cubic meters align with SI. The numeric factor used here is 3.469476e-1.
Conversion tables
| Teaspoon (US) (tsp) | Tablespoon (UK) (uktbsp) |
|---|---|
| 0.1 | 0.0346947577 |
| 1 | 0.3469475769 |
| 2 | 0.6938951539 |
| 3 | 1.0408427308 |
| 4 | 1.3877903077 |
| 5 | 1.7347378846 |
| 6 | 2.0816854616 |
| 7 | 2.4286330385 |
| 8 | 2.7755806154 |
| 9 | 3.1225281924 |
| Teaspoon (US) (tsp) | Tablespoon (UK) (uktbsp) |
|---|---|
| 10 | 3.4694757693 |
| 20 | 6.9389515386 |
| 30 | 10.4084273079 |
| 40 | 13.8779030771 |
| 50 | 17.3473788464 |
| 60 | 20.8168546157 |
| 70 | 24.286330385 |
| 80 | 27.7558061543 |
| 90 | 31.2252819236 |
| 100 | 34.6947576929 |