Metric length scales by tens.
Type a value, pick units
2,500
1 km = 1,000 m
The metric length ladder
- km → m → cm → mm — each step down is ×10 (or ×1000 between km and m).
- 1 km = 1000 m · 1 m = 100 cm · 1 cm = 10 mm.
- Going down a step: move the decimal right. Going up: move it left.
Your turn
Convert 3.4 m to centimetres.
Watch out
Don't multiply by 10 between km and m — that jump is ×1000, not ×10. Only mm↔cm↔m steps are ×10.
Conversions
- 1 cm = 10 mm
- 1 m = 100 cm = 1000 mm
- 1 km = 1000 m