1 g/cm is equivalent to:
: = 1000 g/L (exactly)
: = 1000 kg/m (exactly)
: ≈  (approximately)
: ≈  (approximately)
1 kg/m = 0.001 g/cm(exactly)
1 lb/cu ft ≈  (approximately)
1 oz/US gal ≈  (approximately)