Once

\[\begin{aligned} y[tonne] &= 2.835 \times 10^{-5}x[ounce] \\ y[Kilogram] &= 0.0283495x \\ y[gram] &= 28.3495x \\ y[miligram] &= 28349.5x \\ y[microgram] &= 2.835 \times 10^{7}x \\ y[Imperial\ ton] &= 2.7902 \times 10^{-5}x \\ y[US\ ton] &= 3.125 \times 10^{-5}x \\ y[pound] &= 0.0625x \end{aligned}\]