Convert from hectare meter to cubic meter

Unit Definition (hectare meter)
The hectare meter is a unit of volume used to measure the capacity of reservoirs, equal to the volume of water one meter deep covering one hectare. The unit is used mostly in British Commonwealth countries, especially India, where it provides a metric unit comparable to the traditional English acre foot. Reservoir capacities are often stated in millions of hectare meters (Mha·m or MHM). One hectare meter equals exactly 10 000 cubic meters or about 8.1071 acre feet.

Unit Definition (cubic meter)
The cubic meter is a SI unit of volume, equal to 10E6 cm³, 1000 liters, 35.3147 ft³, or 1.307 95 yd³. A cubic meter holds about 264.17 U.S. liquid gallons or 219.99 British Imperial gallons.