Convert UK fluid ounce to US teaspoon
Unit definitions
UK fluid ounce
$\frac{1}{160}$ of a UK gallon is a UK fluid ounce.
US teaspoon
$80$ US minims are equal to $1$ US teaspoon.
How to convert UK fluid ounce to US teaspoon
$$\text{Volume}_{\text{tsp (us)}} = \text{Volume}_{\text{oz (uk)}} \cdot 5.764559635113693023642331823658952$$
Examples
Example 1
Convert $20.0\ \text{oz (uk)}$ to $\text{tsp (us)}$.
$$\text{Volume}_{\text{tsp (us)}} = 20.0 \cdot 5.764559635113693023642331823658952$$
$$\text{Volume}_{\text{tsp (us)}} = 115.291193$$
$$\therefore \ 20.0\ \text{oz (uk)} = 115.291193 \ \text{tsp (us)}$$
Example 2
Convert $90.0\ \text{oz (uk)}$ to $\text{tsp (us)}$.
$$\text{Volume}_{\text{tsp (us)}} = 90.0 \cdot 5.764559635113693023642331823658952$$
$$\text{Volume}_{\text{tsp (us)}} = 518.810367$$
$$\therefore \ 90.0\ \text{oz (uk)} = 518.810367 \ \text{tsp (us)}$$
Example 3
Convert $115.0\ \text{oz (uk)}$ to $\text{tsp (us)}$.
$$\text{Volume}_{\text{tsp (us)}} = 115.0 \cdot 5.764559635113693023642331823658952$$
$$\text{Volume}_{\text{tsp (us)}} = 662.924358$$
$$\therefore \ 115.0\ \text{oz (uk)} = 662.924358 \ \text{tsp (us)}$$
Example 4
Convert $135.0\ \text{oz (uk)}$ to $\text{tsp (us)}$.
$$\text{Volume}_{\text{tsp (us)}} = 135.0 \cdot 5.764559635113693023642331823658952$$
$$\text{Volume}_{\text{tsp (us)}} = 778.215551$$
$$\therefore \ 135.0\ \text{oz (uk)} = 778.215551 \ \text{tsp (us)}$$
Example 5
Convert $190.0\ \text{oz (uk)}$ to $\text{tsp (us)}$.
$$\text{Volume}_{\text{tsp (us)}} = 190.0 \cdot 5.764559635113693023642331823658952$$
$$\text{Volume}_{\text{tsp (us)}} = 1095.266331$$
$$\therefore \ 190.0\ \text{oz (uk)} = 1095.266331 \ \text{tsp (us)}$$