km to m
x1000
m to cm
x100
cm to mm
x10
mm to cm
÷10
cm to m
÷100
m to km
÷1000
kg to g
x1000
g to cg
x100
tonne to kg
x1000
cg to mg
÷10
weeks to days
÷7
days to hours
÷24
hours to minutes
÷60
minutes to seconds
÷60
seconds to minutes
x60
minutes to hours
x60
hours to days
x24
days to weeks
x7