What Is This Tool?
The Density Calculator finds density, mass, or volume when you know the other two, using the relationship density = mass ÷ volume. Choose what to find, enter the two known values with their units, pick the unit for the answer, and it does the conversion and calculation. For example, 124 g in 1 cm³ gives a density of 124 g/cm³.
How to Use This Tool?
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Choose whether to find density, mass, or volume.
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Select the unit you want the answer in.
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Enter the two known values with their units.
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Click Calculate to see the result.
Key Features
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Solves for density, mass, or volume.
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Supports many mass, volume, and density units.
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Lets you choose the unit for the answer.
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Converts mixed units automatically.
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Formats results to match your locale.
Examples
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124 g divided by 1 cm³ gives a density of 124 g/cm³.
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24 g/cm³ times 320 cm³ gives a mass of 7,680 g.
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240 g divided by 32 g/cm³ gives a volume of 7.5 cm³.
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Water has a density of about 1 g/cm³.
Common Use Cases
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Identifying a material from its density.
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Finding the mass of a known volume of a substance.
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Working out how much space a given mass occupies.
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Converting density between metric and imperial units.
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Checking chemistry and physics problems.
Tips & Best Practices
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Select the correct unit for each value before calculating.
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Choose the output unit that best fits your context.
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Keep measurements consistent and accurate.
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Remember density equals mass divided by volume.
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Use positive values, as mass and volume cannot be negative.
Limitations
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It assumes a uniform substance with constant density.
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Values must be positive numbers.
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Results are rounded for display.
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It solves one of the three quantities at a time.
Frequently Asked Questions
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What is the formula for density?
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Density equals mass divided by volume, written ρ = m / V. Rearranged, mass equals density times volume, and volume equals mass divided by density.
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Can I mix units?
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Yes. Choose any unit for each value, and the calculator converts everything before computing and shows the answer in your chosen unit.
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What is the density of water?
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Pure water has a density of about 1 g/cm³, or 1000 kg/m³, at room temperature.
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Why does the same material have different density numbers?
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The value depends on the units. For example, 1 g/cm³ is the same as 1000 kg/m³ and about 62.4 lb/ft³.
Key Terminology
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Density
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The mass of a substance per unit of volume.
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Mass
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The amount of matter in an object.
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Volume
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The amount of space an object occupies.
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g/cm³
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Grams per cubic centimetre, a common density unit equal to 1000 kg/m³.
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Specific gravity
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The ratio of a substance's density to the density of water.