Looking to quickly find the density of an object or substance? Use our online Density Calculator to calculate density in kg/m³ and g/cm³ by simply entering mass and volume with your preferred units.
Density Calculator (mass ÷ volume)
Enter mass and volume (pick units) — result displays in kg/m³ and g/cm³.
What is Density? (Explained with Calculator Formula)
Density tells us how much mass is packed into a certain amount of space. In simple words, it shows how heavy something is for its size. For example, a block of steel is heavier than a block of wood of the same size because steel has a higher density.
The formula for density is: Density (ρ) = Mass ÷ Volume. In other words, you divide the mass of an object by the space it takes up.
How to Use the Density Calculator
Our calculator makes the process quick and easy. Simply follow these steps:
- First, enter the mass of the object and choose the correct unit (kg, g, mg, lb, oz).
- Next, enter the volume of the object and select the unit (m³, cm³, L, mL, ft³, in³).
- Then, click Calculate to see the result instantly.
- Finally, you can copy the result or clear the form for a new calculation.
As a result, you get the density shown in both kg/m³ and g/cm³.
Density Calculator Examples
Let us look at a few examples to understand better:
- Example 1: Mass = 500 g, Volume = 250 cm³. First, convert 500 g to 0.5 kg. Next, convert 250 cm³ to 0.00025 m³. Therefore, density = 0.5 ÷ 0.00025 = 2000 kg/m³ (≈ 2 g/cm³).
- Example 2: Water at 4°C has a density of 1000 kg/m³ (1 g/cm³). This explains why 1 litre of water always weighs about 1 kilogram.
Why Density Matters in Physics and Calculations
Density is used in many areas of science and daily life. For instance, it helps scientists identify different substances. In addition, engineers use density to test the strength of building materials. It also explains common experiences. For example, oil floats on water because oil has a lower density. On the other hand, a piece of gold sinks quickly because its density is much higher.
Common Density Values
Here are some common substances and their approximate densities:
- Water: 1000 kg/m³ (1 g/cm³)
- Air: ~1.225 kg/m³
- Steel: ~7850 kg/m³
- Gold: ~19,300 kg/m³
Frequently Asked Questions
How is density measured?
Density is measured by dividing the mass of an object by its volume. You can measure mass with a weighing scale. After that, you can measure volume using geometry or water displacement.
What is the SI unit of density?
The SI unit of density is kilograms per cubic metre (kg/m³). However, in chemistry, density is often expressed in grams per cubic centimetre (g/cm³).
How do you convert between g/cm³ and kg/m³?
The conversion is simple. 1 g/cm³ = 1000 kg/m³. Therefore, to go from g/cm³ to kg/m³, multiply by 1000. To go the other way, divide by 1000.
Why is density important in everyday life?
Density explains many things around us. For example, it tells us why some objects float while others sink. It also helps in cooking, construction, science experiments, and even in designing vehicles and aircraft. As a result, understanding density makes science more practical and useful.