Tonnes to kg (t to kg)

One metric tonne is exactly 1,000 kilograms. It is the SI megagram under another name (scientific papers often write it as Mg), and the factor is the definition.

Worked through: 2 t x 1,000 = 2,000 kg.

Going the other way, one kilogram is 0.001 metric tonnes.

For mental arithmetic: Add three zeros.

The metric ton, tonne and megagram are all the same thousand kilograms, and the spelling 'tonne' exists mainly to keep it apart from the American short ton of 907 kg and the British long ton of 1,016. Carbon emissions are the place most people meet it now: emissions and offsets are reported in tonnes of CO2, and a tonne of CO2 is a thousand kilograms of a gas, which at room temperature fills roughly 500 cubic meters. Vehicle ratings, cranes and freight outside the US all use it, and 't' is the symbol; capital 'T' is the tesla, a unit of magnetic field.

Precision is worth matching to the input. A measurement given as 0.5 t carries one or two significant figures, and reporting its conversion to six implies a precision the original never had.