50 mm - 5 cm, 9 Km - 9000m , 5 km - 5000m, 5 m - 500cm, 90 mm - 9 cm, 300 cm - 3 cm, 3 km - 3000m, 9.28 Km - 9280 m, 0.45 m - 45 cm, .003 Km - 3 m, SI means - International  System of Units, grams - measurement for mass, meters - measurement for length, liters - measurement for volume, 2.5 Km - 250 dkm or dam,

Metric system

Leaderboard

Visual style

Options

Switch template

Continue editing: ?