Ehhh I know my metic system!!! Check this out.

Kg is 2.2 lbs a good roundish number.

Cm is almost half an inch.

Km is just over half a mile

Celsius kinda throws me but I know 36c to 37c is body temp and 0 is the freezing point of water, and 100 is the boiling point of water. Sooooo I can guesstimate from there.

See there rest of the world. Your metric system doesn’t scare me!!