Calcs4All

APR 23 · 2026

Density calculator

Calculate density from mass and volume with unit conversions.

What this calculator covers

Use this calculator to turn a mass-and-volume measurement into density without manually converting units first.

Showing both kg/m^3 and g/cm^3 makes it easier to compare engineering references, materials tables, and science-class examples that use different density conventions.

Frequently asked questions

What units can I enter for mass and volume?
Mass can be entered in kilograms, grams, or pounds. Volume can be entered in cubic meters, liters, cubic centimeters, or cubic feet. The calculator converts both to SI base units before dividing.
Why does water have a density close to 1 g/cm³?
Pure water at standard conditions has a density of approximately 1 g/cm³ by definition of the original metric system. Objects with a density above 1 g/cm³ sink in water; objects below float.
Does temperature or pressure affect the result?
This calculator uses only the mass and volume values you enter. It does not apply temperature or pressure corrections, so results for gases and liquids near phase transitions may differ from tabulated values.
What is the relationship between kg/m³ and g/cm³?
The two units differ by a factor of 1,000. A density of 1,000 kg/m³ equals 1 g/cm³. Both results are shown together so you can match whichever convention a reference table uses.

Tool

Run the calculation

RESULT · DENSITY

â„–198

Primary result

2,000.00 kg/m^3

2 kg in 0.001 m3 has a density of 2,000.00 kg/m^3.

Density (kg/m^3)
2,000.0000
Density (g/cm^3)
2.000000
Mass in kilograms
2
Volume in cubic meters
0.001

Step-by-step solution

  1. 1.Convert the mass into kilograms: 2 kg.
  2. 2.Convert the volume into cubic meters: 0.001 m^3.
  3. 3.Divide mass by volume to get density, then scale by 1/1000 to express the same result in g/cm^3.

Walkthrough

Visual walkthrough

Density is just mass per unit volume, but the trick is getting both measurements into compatible units first.

  1. 01

    Normalize mass

    2 kg

    Mass is converted into kilograms so the SI density result can be read directly in kg/m^3.

  2. 02

    Normalize volume

    0.001 m^3

    Volume is converted into cubic meters before the division step.

  3. 03

    Divide mass by volume

    The same underlying ratio is shown in both kg/m^3 and g/cm^3 so science and engineering references are easier to compare.

    2,000.00 kg/m^3