From To km/kg m/kg mi/lb km/t
km/kg 1 1000 0.281849 1000
m/kg 0.001 1 0.000282 1
mi/lb 3.548 3548 1 3548
km/t 0.001 1 0.000282 1

Each cell shows the factor to convert 1 unit of the row header into the column header.

Highlighted diagonal cells represent identity conversions (1:1).