Convert Watt to Femtowatt
Unit definitions
Watt
The watt is the SI unit of power. It is defined as one joule per second ($1\ \text{W} = 1\ \text{J/s}$).
Femtowatt
$10^{-15}$ watts is a femtowatt.
How to convert Watt to Femtowatt
$$\text{Power}_{\text{fW}} = \text{Power}_{\text{W}} \cdot {10}^{15}$$
Examples
Example 1
Convert $20.0\ \text{W}$ to $\text{fW}$.
$$\text{Power}_{\text{fW}} = 20.0 \cdot {10}^{15}$$
$$\text{Power}_{\text{fW}} = 20000000000000000$$
$$\therefore \ 20.0\ \text{W} = 20000000000000000 \ \text{fW}$$
Example 2
Convert $75.0\ \text{W}$ to $\text{fW}$.
$$\text{Power}_{\text{fW}} = 75.0 \cdot {10}^{15}$$
$$\text{Power}_{\text{fW}} = 75000000000000000$$
$$\therefore \ 75.0\ \text{W} = 75000000000000000 \ \text{fW}$$
Example 3
Convert $120.0\ \text{W}$ to $\text{fW}$.
$$\text{Power}_{\text{fW}} = 120.0 \cdot {10}^{15}$$
$$\text{Power}_{\text{fW}} = 120000000000000000$$
$$\therefore \ 120.0\ \text{W} = 120000000000000000 \ \text{fW}$$
Example 4
Convert $150.0\ \text{W}$ to $\text{fW}$.
$$\text{Power}_{\text{fW}} = 150.0 \cdot {10}^{15}$$
$$\text{Power}_{\text{fW}} = 150000000000000000$$
$$\therefore \ 150.0\ \text{W} = 150000000000000000 \ \text{fW}$$
Example 5
Convert $160.0\ \text{W}$ to $\text{fW}$.
$$\text{Power}_{\text{fW}} = 160.0 \cdot {10}^{15}$$
$$\text{Power}_{\text{fW}} = 160000000000000000$$
$$\therefore \ 160.0\ \text{W} = 160000000000000000 \ \text{fW}$$