Convert Pound to Stone
Unit definitions
Pound
$453.592\,37$ grams is a pound. It is also known as the avoirdupois pound.
Stone
The stone is an imperial unit of mass equal to $14$ avoirdupois pounds or $6.350\,293\,18$ kilograms.
How to convert Pound to Stone
$$\text{Mass}_{\text{st}} = \frac{\text{Mass}_{\text{lb}}}{14}$$
Examples
Example 1
Convert $20.0\ \text{lb}$ to $\text{st}$.
$$\text{Mass}_{\text{st}} = \frac{20.0}{14}$$
$$\text{Mass}_{\text{st}} = 1.428571$$
$$\therefore \ 20.0\ \text{lb} = 1.428571 \ \text{st}$$
Example 2
Convert $70.0\ \text{lb}$ to $\text{st}$.
$$\text{Mass}_{\text{st}} = \frac{70.0}{14}$$
$$\text{Mass}_{\text{st}} = 5$$
$$\therefore \ 70.0\ \text{lb} = 5 \ \text{st}$$
Example 3
Convert $110.0\ \text{lb}$ to $\text{st}$.
$$\text{Mass}_{\text{st}} = \frac{110.0}{14}$$
$$\text{Mass}_{\text{st}} = 7.857143$$
$$\therefore \ 110.0\ \text{lb} = 7.857143 \ \text{st}$$
Example 4
Convert $145.0\ \text{lb}$ to $\text{st}$.
$$\text{Mass}_{\text{st}} = \frac{145.0}{14}$$
$$\text{Mass}_{\text{st}} = 10.357143$$
$$\therefore \ 145.0\ \text{lb} = 10.357143 \ \text{st}$$
Example 5
Convert $165.0\ \text{lb}$ to $\text{st}$.
$$\text{Mass}_{\text{st}} = \frac{165.0}{14}$$
$$\text{Mass}_{\text{st}} = 11.785714$$
$$\therefore \ 165.0\ \text{lb} = 11.785714 \ \text{st}$$