Convert US teaspoon to Metric teaspoon
Unit definitions
US teaspoon
$80$ US minims are equal to $1$ US teaspoon.
Metric teaspoon
The metric teaspoon is equal to $5$ milliliters.
How to convert US teaspoon to Metric teaspoon
$$\text{Volume}_{\text{tsp (metric)}} = \text{Volume}_{\text{tsp (us)}} \cdot 0.98578432$$
Examples
Example 1
Convert $45.0\ \text{tsp (us)}$ to $\text{tsp (metric)}$.
$$\text{Volume}_{\text{tsp (metric)}} = 45.0 \cdot 0.98578432$$
$$\text{Volume}_{\text{tsp (metric)}} = 44.360294$$
$$\therefore \ 45.0\ \text{tsp (us)} = 44.360294 \ \text{tsp (metric)}$$
Example 2
Convert $85.0\ \text{tsp (us)}$ to $\text{tsp (metric)}$.
$$\text{Volume}_{\text{tsp (metric)}} = 85.0 \cdot 0.98578432$$
$$\text{Volume}_{\text{tsp (metric)}} = 83.791667$$
$$\therefore \ 85.0\ \text{tsp (us)} = 83.791667 \ \text{tsp (metric)}$$
Example 3
Convert $105.0\ \text{tsp (us)}$ to $\text{tsp (metric)}$.
$$\text{Volume}_{\text{tsp (metric)}} = 105.0 \cdot 0.98578432$$
$$\text{Volume}_{\text{tsp (metric)}} = 103.507354$$
$$\therefore \ 105.0\ \text{tsp (us)} = 103.507354 \ \text{tsp (metric)}$$
Example 4
Convert $150.0\ \text{tsp (us)}$ to $\text{tsp (metric)}$.
$$\text{Volume}_{\text{tsp (metric)}} = 150.0 \cdot 0.98578432$$
$$\text{Volume}_{\text{tsp (metric)}} = 147.867648$$
$$\therefore \ 150.0\ \text{tsp (us)} = 147.867648 \ \text{tsp (metric)}$$
Example 5
Convert $185.0\ \text{tsp (us)}$ to $\text{tsp (metric)}$.
$$\text{Volume}_{\text{tsp (metric)}} = 185.0 \cdot 0.98578432$$
$$\text{Volume}_{\text{tsp (metric)}} = 182.370099$$
$$\therefore \ 185.0\ \text{tsp (us)} = 182.370099 \ \text{tsp (metric)}$$