Convert US fluid ounce to US teaspoon
Unit definitions
US fluid ounce
$\frac{1}{128}$ of a US liquid gallon is a US fluid ounce.
US teaspoon
$80$ US minims are equal to $1$ US teaspoon.
How to convert US fluid ounce to US teaspoon
$$\text{Volume}_{\text{tsp (us)}} = \text{Volume}_{\text{oz (us)}} \cdot 5.999999992391844901732662982507167$$
Examples
Example 1
Convert $20.0\ \text{oz (us)}$ to $\text{tsp (us)}$.
$$\text{Volume}_{\text{tsp (us)}} = 20.0 \cdot 5.999999992391844901732662982507167$$
$$\text{Volume}_{\text{tsp (us)}} = 120$$
$$\therefore \ 20.0\ \text{oz (us)} = 120 \ \text{tsp (us)}$$
Example 2
Convert $70.0\ \text{oz (us)}$ to $\text{tsp (us)}$.
$$\text{Volume}_{\text{tsp (us)}} = 70.0 \cdot 5.999999992391844901732662982507167$$
$$\text{Volume}_{\text{tsp (us)}} = 419.999999$$
$$\therefore \ 70.0\ \text{oz (us)} = 419.999999 \ \text{tsp (us)}$$
Example 3
Convert $110.0\ \text{oz (us)}$ to $\text{tsp (us)}$.
$$\text{Volume}_{\text{tsp (us)}} = 110.0 \cdot 5.999999992391844901732662982507167$$
$$\text{Volume}_{\text{tsp (us)}} = 659.999999$$
$$\therefore \ 110.0\ \text{oz (us)} = 659.999999 \ \text{tsp (us)}$$
Example 4
Convert $130.0\ \text{oz (us)}$ to $\text{tsp (us)}$.
$$\text{Volume}_{\text{tsp (us)}} = 130.0 \cdot 5.999999992391844901732662982507167$$
$$\text{Volume}_{\text{tsp (us)}} = 779.999999$$
$$\therefore \ 130.0\ \text{oz (us)} = 779.999999 \ \text{tsp (us)}$$
Example 5
Convert $200.0\ \text{oz (us)}$ to $\text{tsp (us)}$.
$$\text{Volume}_{\text{tsp (us)}} = 200.0 \cdot 5.999999992391844901732662982507167$$
$$\text{Volume}_{\text{tsp (us)}} = 1199.999998$$
$$\therefore \ 200.0\ \text{oz (us)} = 1199.999998 \ \text{tsp (us)}$$