Volume = (length) x (width) x (height)
Two common units for mass are kilograms and grams
Density = Mass/Volume. Conversion between units will depend on what the two units are.
Liters and MilliLiters
When you say "English", I'm assuming you mean the "customary" system of units of measure that's used in two English speaking countries and a Burmese one. In that system, the volume units of cubic inch, cubic foot, and cubic yard are quite common. Also the cubic mile, though not so commonly heard.
Mass: Pound and Gram Volume: Gallon and Litre.
ml litre
liters
Volume = (length) x (width) x (height)
Two common units for mass are kilograms and grams
The SI unit for volume is the cubic meter (m³). Other common units include liters (L) and milliliters (mL).
The common volume units for solid substances are cubic centimeters (cm³) or cubic meters (m³). These units are used to quantify the amount of space occupied by a solid object.
One way to remember volume units is to remember the acronym "GQT", which stands for Gallon, Quart, Pint. This order represents the hierarchy of common volume units in the US customary system.
Cube one's volume = 9*9*9 = 729 cubic units. As there are two cubes, their volumes added together = 1458 cubic units.
Density = Mass/Volume. Conversion between units will depend on what the two units are.
liter,milliliter,cubic centimeter
direct measurement and displacement