Centimetres.
I don't know. Measure it.
Height is not a unit of measure, it is a direction. There is, therefore no conversion possible.
Metres.
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To measure an office chair, typically you would measure the height, width, and depth of the chair. The height is measured from the floor to the top of the backrest, the width is measured at the widest point of the chair, and the depth is measured from the front of the seat to the backrest.
Centimetres.
I don't know. Measure it.
The most suitable units to measure the height of a person are, feet and inches.
Most people measure their height in feet and inches
The SI unit used to measure the height of a desk is meters (m).
The metric unit commonly used to measure height is the meter. So, you would measure the height of Big Ben in meters.
Hands
metres
Metres
mm
centimeters