Libra

\[\begin{aligned} y[tonne] &= 0.000453592x[pound] \\ y[Kilogram] &= 0.453592x \\ y[gram] &= 453.592x \\ y[miligram] &= 453592x \\ y[microgram] &= 4.536 \times 10^{8}x \\ y[Imperial\ ton] &= 0.000446429x \\ y[US\ ton] &= 0.0005x \\ y[ounce] &= 16x \end{aligned}\]