Conversion between Distance → Area, Volume

When converting between units of distance, area, and volume, it's crucial to remember to square or cube the linear conversion factor. If a linear conversion is $1 \text{ unit A} = k \text{ units B}$, then for area it's $1 \text{ unit A}^2 = k^2 \text{ units B}^2$, and for volume it's $1 \text{ unit A}^3 = k^3 \text{ units B}^3$.

For example, since 1 ft = 12 in, then 1 ft³ = 12³ in³ = 1728 in³.