Convert Joule to Kilojoule
Unit definitions
Joule
The joule is the SI unit of energy. It is defined as the work done when a force of one newton is applied over a distance of one meter.
Kilojoule
$10^{3} \ \text{J}$ is a kilojoule.
How to convert Joule to Kilojoule
$$\text{Energy}_{\text{kJ}} = \frac{\text{Energy}_{\text{J}}}{{10}^{3}}$$
Examples
Example 1
Convert $35.0\ \text{J}$ to $\text{kJ}$.
$$\text{Energy}_{\text{kJ}} = \frac{35.0}{{10}^{3}}$$
$$\text{Energy}_{\text{kJ}} = 0.035$$
$$\therefore \ 35.0\ \text{J} = 0.035 \ \text{kJ}$$
Example 2
Convert $70.0\ \text{J}$ to $\text{kJ}$.
$$\text{Energy}_{\text{kJ}} = \frac{70.0}{{10}^{3}}$$
$$\text{Energy}_{\text{kJ}} = 0.07$$
$$\therefore \ 70.0\ \text{J} = 0.07 \ \text{kJ}$$
Example 3
Convert $115.0\ \text{J}$ to $\text{kJ}$.
$$\text{Energy}_{\text{kJ}} = \frac{115.0}{{10}^{3}}$$
$$\text{Energy}_{\text{kJ}} = 0.115$$
$$\therefore \ 115.0\ \text{J} = 0.115 \ \text{kJ}$$
Example 4
Convert $135.0\ \text{J}$ to $\text{kJ}$.
$$\text{Energy}_{\text{kJ}} = \frac{135.0}{{10}^{3}}$$
$$\text{Energy}_{\text{kJ}} = 0.135$$
$$\therefore \ 135.0\ \text{J} = 0.135 \ \text{kJ}$$
Example 5
Convert $175.0\ \text{J}$ to $\text{kJ}$.
$$\text{Energy}_{\text{kJ}} = \frac{175.0}{{10}^{3}}$$
$$\text{Energy}_{\text{kJ}} = 0.175$$
$$\therefore \ 175.0\ \text{J} = 0.175 \ \text{kJ}$$