In the International System of Units and other metric systems of units, multiplying the unit to which it is attached by 1,000. Symbol: k
Multiplying the unit to which it is attached by 2¹⁰ (1024)
In the International System of Units and other metric systems of units, one-thousandth of the unit to which it is prefixed; that is, multiplying the unit to which it is attached by 10⁻³. Symbol: m.
thousand