What is being measured?
Exactly 1000 metres per kilometre.
The unit relationship is exact. A measured input can still have its own uncertainty.
- Dimension
- length
- Reference value
- 1 km
- Evidence
- Exact unit definition
- In metres
- 1000 m
Put the length in perspective
One Kilometre represents approximately 11,700 card lengths measured end to end. This is a length ratio; it does not calculate how the objects pack or fit.
Kilometre · 1000 m
Metre · 1 m · too small to see
Foot (international) · 0.3048 m · too small to see