Convert Joule to British thermal unit
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.
British thermal unit
The British thermal unit (Btu) is the amount of thermal energy required to raise the temperature of one pound of water by one degree Fahrenheit.
How to convert Joule to British thermal unit
$$\text{Energy}_{\text{Btu}} = \text{Energy}_{\text{J}} \cdot 0.0009478133944988910583284362974617557$$
Examples
Example 1
Convert $25.0\ \text{J}$ to $\text{Btu}$.
$$\text{Energy}_{\text{Btu}} = 25.0 \cdot 0.0009478133944988910583284362974617557$$
$$\text{Energy}_{\text{Btu}} = 0.023695$$
$$\therefore \ 25.0\ \text{J} = 0.023695 \ \text{Btu}$$
Example 2
Convert $75.0\ \text{J}$ to $\text{Btu}$.
$$\text{Energy}_{\text{Btu}} = 75.0 \cdot 0.0009478133944988910583284362974617557$$
$$\text{Energy}_{\text{Btu}} = 0.071086$$
$$\therefore \ 75.0\ \text{J} = 0.071086 \ \text{Btu}$$
Example 3
Convert $105.0\ \text{J}$ to $\text{Btu}$.
$$\text{Energy}_{\text{Btu}} = 105.0 \cdot 0.0009478133944988910583284362974617557$$
$$\text{Energy}_{\text{Btu}} = 0.09952$$
$$\therefore \ 105.0\ \text{J} = 0.09952 \ \text{Btu}$$
Example 4
Convert $145.0\ \text{J}$ to $\text{Btu}$.
$$\text{Energy}_{\text{Btu}} = 145.0 \cdot 0.0009478133944988910583284362974617557$$
$$\text{Energy}_{\text{Btu}} = 0.137433$$
$$\therefore \ 145.0\ \text{J} = 0.137433 \ \text{Btu}$$
Example 5
Convert $165.0\ \text{J}$ to $\text{Btu}$.
$$\text{Energy}_{\text{Btu}} = 165.0 \cdot 0.0009478133944988910583284362974617557$$
$$\text{Energy}_{\text{Btu}} = 0.156389$$
$$\therefore \ 165.0\ \text{J} = 0.156389 \ \text{Btu}$$