| 1 km3 h2o | = 1.0E+15 cubic centimeters of water (cm3 h2o) | ⇛ |
| 1 km3 h2o | = 35314666571.834 cubic feet of water (ft3 h2o) | ⇛ |
| 1 km3 h2o | = 61023743837783 cubic inches of water (in3 h2o) | ⇛ |
| 1 km3 h2o | = 1 cubic kilometers of water (km3 h2o) | ⇛ |
| 1 km3 h2o | = 1000000000 cubic meters of water (m3 h2o) | ⇛ |
| 1 km3 h2o | = 1.0E+18 cubic millimeters of water (mm3 h2o) | ⇛ |
| 1 km3 h2o | = 1307950619.287 cubic yards of water (yd3 h2o) | ⇛ |
| 1 km3 h2o | = 219969248299.09 gallons of water[UK] (gal h2o [UK]) | ⇛ |
| 1 km3 h2o | = 264172051241.56 gallons of water[US] (gal h2o [US]) | ⇛ |
| 1 km3 h2o | = 1.0E+15 grams h2o (g h2o) | ⇛ |
| 1 km3 h2o | = 1000000000000 kilograms h2o (kg h2o) | ⇛ |
| 1 km3 h2o | = 1000000000000 liters of water (L h2o) | ⇛ |
| 1 km3 h2o | = 1.0E+15 milliliters of water (mL h2o) | ⇛ |
| 1 km3 h2o | = 2204585537918.9 pounds h2o (lbs h2o) | ⇛ |
| 1 km3 h2o | = 1000000000 tons h2o (t h2o) | ⇛ |