Mass per volume density.
Kilograms per Milliliter to Grams per Cubic Millimeter Converter — kg/mL to g/mm3
Convert Kilogram per Milliliter (kg/mL) to Gram per Cubic Millimeter (g/mm3) using the exact conversion factor (1 kilogram per milliliter = 1 gram per cubic millimeter). See the formula, worked examples, and conversion table.
Kilograms per Milliliter to Grams per Cubic Millimeter converter
Converter
Density Converter
Convert thousands of mass-per-volume density combinations for science, engineering, agriculture, and fluids.
Context values
Some unit families need one extra value for a physically accurate result.
Mass per volume density.
Result = input x 1e+6 / 1e+6.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Kilograms per Milliliter to Grams per Cubic Millimeter
Kilogram per Milliliter and Gram per Cubic Millimeter both measure density — mass per unit volume — a property used to identify materials, check manufacturing quality, and predict whether something floats or sinks. As a fixed reference point, water has a density of exactly 1000 kg/m³ (1 g/cm³, 1 g/mL) at its temperature of maximum density, which is why many density figures in science and engineering are quoted relative to water. Both are mass per volume density units.
Formula
grams per cubic millimeter = kilograms per milliliter × 1
This factor comes from each unit's defined relationship to the category's base unit: 1 kilogram per milliliter equals 1000000 base units, and 1 gram per cubic millimeter equals 1000000 base units, so dividing one by the other gives the direct kilogram per milliliter-to-gram per cubic millimeter factor of 1.
Simple example
1 kg/mL × 1 = 1 g/mm3
1 kilogram per milliliter = 1 gram per cubic millimeter.
Real-world example
1,000 kg/mL × 1 = 1,000 g/mm3
1,000 kilograms per milliliter = 1,000 grams per cubic millimeter.
Conversion table
| Kilogram per Milliliter (kg/mL) | Gram per Cubic Millimeter (g/mm3) |
|---|---|
| 0.1 kg/mL | 0.1 g/mm3 |
| 1 kg/mL | 1 g/mm3 |
| 10 kg/mL | 10 g/mm3 |
| 100 kg/mL | 100 g/mm3 |
| 1,000 kg/mL | 1,000 g/mm3 |
| 10,000 kg/mL | 10,000 g/mm3 |
Reverse conversion: Gram per Cubic Millimeter to Kilogram per Milliliter
1 g/mm3 × 1 = 1 kg/mL
1 gram per cubic millimeter = 1 kilogram per milliliter.
kilograms per milliliter = grams per cubic millimeter × 1
For a page dedicated to this direction, see Gram per Cubic Millimeter to Kilogram per Milliliter.
Understanding the Kilogram per Milliliter (kg/mL)
Mass per volume density.
Understanding the Gram per Cubic Millimeter (g/mm3)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grams per cubic millimeter are in 1 kilogram per milliliter?
1 kilogram per milliliter equals 1 gram per cubic millimeter, using the exact defined conversion factor rather than an estimate.
How do I convert kilogram per milliliter to gram per cubic millimeter?
Multiply the kilogram per milliliter value by 1. The converter above does this instantly to whatever precision you set.
How do I convert gram per cubic millimeter back to kilogram per milliliter?
Use the reverse factor: 1 gram per cubic millimeter equals 1 kilogram per milliliter. You can also use the swap control in the converter above to flip the direction instantly.
What is a kilogram per milliliter?
Kilogram per Milliliter (kg/mL) is a unit of density.
What is a gram per cubic millimeter?
Gram per Cubic Millimeter (g/mm3) is a unit of density.
Is the kilogram per milliliter to gram per cubic millimeter conversion exact?
Yes. Both kilogram per milliliter and gram per cubic millimeter are defined by fixed standards rather than physical artifacts, so the factor of 1 used above is exact to as many digits as you choose to display.
What's the difference between density and mass concentration?
Density is the mass of a pure substance or material per unit volume. Mass concentration is the mass of one component — like a dissolved solute — within a mixture's total volume. The two use the same kind of units but describe different physical situations.