The SI unit of volume is the cubic meter (m3), which is a derived unit. Other commonly used units of volume include the liter (L), the cubic centimeter (cm3 or cc), and the milliliter (mL) . The liter is a special name for the cubic decimeter (dm3) . The following are some common units of volume and their relationships to each other:

• 1000 cubic millimeters (mm3) = 1 cubic centimeter (cm3)
• 1 cm3 = 1 milliliter (mL)
• 10 mL = 1 centiliter (cL)
• 10 cL = 1 deciliter (dL)
• 1 dL = 100 milliliters (mL)
• 1000 cm3 = 1 cubic decimeter (dm3) = 1 liter (L)
• 10 dL = 1 L
• 1000 mL = 1 L
• 10 L = 1 dekaliter (daL)
• 10 daL = 1 hectoliter (hL)
• 1 hL = 100 L
• 1000 dm3 = 1 cubic meter (m3)
• 1000 L = 1 m3
• 1000 L = 1 kL
• 1 kL = 10 hL

In summary, the SI unit of volume is the cubic meter (m3).