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Density Calculator
Calculate density, mass, or volume from two known values.
Inputs
Adjust the assumptions to match your scenario. Results update instantly.
Results
Primary outputs and comparison insights are built from the current inputs.
Density (kg/L)
2.5
Mass per unit volume.
Density (g/cm³)
2.5
Density in grams per cubic centimeter.
Floats in water (1=yes)
0
1 if density < 1 kg/L (floats), 0 if sinks.
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How this Density Calculator works
The Density Calculator computes the density of a material from its mass and volume, and checks whether it would float in water. Enter mass (kg) and volume (l) to estimate density (kg/l), density (g/cm³), and floats in water (1=yes). The calculator updates instantly and adds a comparison table plus chart so you can test the sensitivity of the result before you use it in a decision.
Quick guide
Jump to the section you need, then return to the density calculator.
Inputs
- Mass of the object in kilograms.
- Volume of the object in liters.
Outputs
- Mass per unit volume.
- Density in grams per cubic centimeter.
- 1 if density < 1 kg/L (floats), 0 if sinks.
Assumptions
- Uniform material.
- 1 kg/L = 1 g/cm³ for this conversion.
Tips
- Water = 1 g/cm³, steel ≈ 7.8, aluminum ≈ 2.7, wood ≈ 0.5.
- Density determines buoyancy: less than water = floats.
Density Calculator formula guide
Use these density calculator formulas to audit the output or explain it to someone else.
1 formulas
Density Calculator examples
Review a ready-made density calculator scenario, copy it, then tweak inputs to match your case.
Example
Unknown material check
Inputs
- Example input Mass (kg): 7.8
- Example input Volume (L): 1
Outputs
- Example result Density (kg/L): 7.8
- Example result Density (g/cm³): 7.8
- Example result Floats in water (1=yes): 0
A density of 7.8 kg/L closely matches steel.
Density by volume
| Volume (L) | Density (kg/L) | Density (g/cm³) |
|---|---|---|
| 1 | 5 | 5 |
| 1.5 | 3.33 | 3.33 |
| 2 | 2.5 | 2.5 |
| 2.5 | 2 | 2 |
| 3 | 1.67 | 1.67 |
Water has a density of 1 kg/L; objects denser than water sink.
Density curve
Focus point
1
5
Position
#1 of 5
Original order
Share of total
34.48%
Total: 14.5
Water has a density of 1 kg/L; objects denser than water sink.
References
- Density calculation in physics
- Common material density reference table
Learn more
Guides connected to the density calculator
Use these short guides when you want the decision framework behind the numbers, not just the raw output.
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FAQ
Density Calculator FAQ
What does the Density Calculator do?
The Density Calculator computes the density of a material from its mass and volume, and checks whether it would float in water. Enter mass (kg) and volume (l) to estimate density (kg/l), density (g/cm³), and floats in water (1=yes). The calculator updates instantly and adds a comparison table plus chart so you can test the sensitivity of the result before you use it in a decision. It is part of our other toolkit.
What inputs do I need?
Typical inputs include Mass of the object in kilograms., Volume of the object in liters..
How are the results calculated?
We follow the formulas and assumptions outlined in the "How this calculator works" section. You will see outputs like Mass per unit volume., Density in grams per cubic centimeter., 1 if density < 1 kg/L (floats), 0 if sinks..
Can I share or download the results?
Use the Copy link or Print buttons to share your results. If a table or chart appears, you can download the data as CSV.
Is my data stored?
No. Calculations run in your browser and we do not store your inputs.
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