How do I convert between density units?

Enter your density value in the source unit, and the converter calculates the equivalent in your target unit using precise conversion factors.

What is specific gravity and how does it relate to density?

Specific gravity is the ratio of a substance density to water density. A specific gravity of 1.0 equals water density (1 g/cm³ or 1000 kg/m³).

When are density conversions needed?

Density conversions are essential in chemistry, engineering, material science, petroleum industry, and any application involving material properties.

Apparent Density Calculator - Free Online Tool

Calculate your apparent density with our free online tool.

Get accurate results instantly.

No signup required.

Show this tool on your website

Last updatedMay 21, 2026How we build & check our tools

This calculator requires JavaScript to function. Please enable JavaScript in your browser to use all features.

How This Tool Works

This calculator compares apparent density with true density for a porous sample. Enter the sample mass, the total volume including pores, and the pore volume. The tool subtracts pore volume from total volume to estimate the solid volume.

It then calculates apparent density = mass / total volume and true density = mass / solid volume. Porosity is shown as pore volume / total volume x 100.

Input: Mass in grams, total volume in cm³, and pore volume in cm³.
Output: Apparent density, true density, porosity, and solid volume.
Validation: Pore volume must be less than total volume so the solid volume stays positive.

Why This Matters

Porous materials can have a lower apparent density than true density because pores contribute volume without adding solid mass. Comparing both values helps evaluate aggregates, powders, ceramics, soils, and construction materials where void space affects handling, strength, and quality control.

Use consistent units for all volume inputs. If your measurements are in milliliters, they are numerically equivalent to cubic centimeters for this calculation.

Frequently Asked Questions

Common questions about the Apparent Density Calculator - Free Online Tool

Density is mass per unit volume, typically measured in kg/m³ or g/cm³. It describes how much matter is packed into a given space.

Learn More

Sources & References

International System of Units (SI): mass density

Mass density is measured in the kilogram per cubic metre (kg/m³). Conversions between SI and other units use exact, internationally agreed factors maintained by NIST.

→Source: NIST — International System of Units (SI)

International System of Units (SI)

Authoritative definitions for mass density, from the BIPM SI Brochure (9th edition), the defining reference for the SI.

→Source: BIPM — SI Brochure (9th ed.)

Explore More Tools

Continue your financial journey with these related calculators

density

kg/m³ to lb/ft³ Converter

Convert density units instantly with this free kg/m³ to lb/ft³ converter. Includes reference tables for common materials, scientific applications, and bidirectional conversion.

Try it now

density

g/cm³ to kg/m³ Converter

Convert density units instantly with this free g/cm³ to kg/m³ converter. Includes reference tables for common materials, scientific applications, and bidirectional conversion.

Try it now

density

Specific Gravity to kg/m³ Converter

Convert density units instantly with this free specific gravity to kg/m³ converter. Includes reference tables for common materials, scientific applications, and bidirectional conversion.

Try it now

density

lb/gal to kg/m³ Converter

Convert density units instantly with this free lb/gal to kg/m³ converter. Includes reference tables for common materials, scientific applications, and bidirectional conversion.

Try it now

density

°API to SG Converter

Convert API Gravity to Sg instantly. Free online converter with accurate results and clear explanations.

Try it now

density

°Bé to SG Converter

Convert Baume to Sg instantly. Free online converter with accurate results and clear explanations.

Try it now