Tonne

\[\begin{aligned} y[Kilogram] &= 1000x[tonne] \\ y[gram] &= 1 \times 10^{6}x \\ y[miligram] &= 1 \times 10^{9}x \\ y[microgram] &= 1 \times 10^{12}x \\ y[Imperial\ ton] &= 0.984207x \\ y[US\ ton] &= 1.10231x \\ y[pound] &= 2204.62x \\ y[ounce] &= 35274x \end{aligned}\]