Cubic millimeters (mm³)

The cubic millimeter is the volume of a cube one millimeter on each side, equal to one microliter.

Convert cubic millimeters to any volume unit

1 cubic millimeter = 0.000001 liters

Quick facts

Unit
Cubic millimeter (plural: cubic millimeters)
Symbol
mm³
Measures
Volume / Capacity
System
Metric
Equals
0.000001 liters
Definition
One billionth of a cubic meter; one microliter.
Also written
cubic millimetre, mm3

1 cubic millimeter in other units

Liters0.000001 L
Gallons2.6417205 × 10-7 gal
Milliliters0.001 mL
Cups0.000004226753 cup
Fluid ounces0.000033814023 fl oz
Tablespoons0.000067628045 tbsp
Teaspoons0.000202884136 tsp
Cubic meters1 × 10-9 m³

What is a cubic millimeter?

The cubic millimeter is the volume of a cube one millimeter on each side, equal to one microliter. It is used in medicine for blood counts (cells per mm³) and in engineering for small parts.

Where the cubic millimeter sits among volume units

The cubic millimeter is number 4 of 234 on our scale of volume units, ordered from smallest to largest.

Top cubic millimeter conversions

Common amounts of cubic millimeters

Convert cubic millimeters to all 233 other units

Metric

US liquid

US dry

Imperial (UK)

Wine & spirits

Cooking (metric & informal)

Oil, gas & shipping

Scientific

Ancient

East & Southeast Asian

European (pre-metric)

Everyday comparisons

Convert to cubic millimeters

Frequently asked questions

What is a cubic millimeter?

The cubic millimeter is the volume of a cube one millimeter on each side, equal to one microliter.

How is the cubic millimeter defined?

One billionth of a cubic meter; one microliter.

How many liters are in a cubic millimeter?

One cubic millimeter equals 0.000001 liters.

How many gallons are in a cubic millimeter?

One cubic millimeter equals 2.6417205e-7 gallons.

How many milliliters are in a cubic millimeter?

One cubic millimeter equals 0.001 milliliters.