Bulk Density & Porosity Calculator

Bulk Density & Porosity Calculator | Online Free Tool | Elysia Tools

Tool usage guide

Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Category: Math & Numbers
Input types: select, number
Output type: json
Sample coverage: 4
API ready: Yes

Overview

The Bulk Density & Porosity Calculator finds bulk density, mass, or bulk volume for granular and porous materials using SI units. Enter any two related values, and optionally add true particle density to calculate porosity and relative density.

When to use

Calculate bulk density from a material sample's mass and bulk volume.
Find the mass or bulk volume when density and the other measurement are known.
Estimate porosity for a granular or porous material when true particle density is available.

How it works

1Choose whether to solve for bulk density, mass, or bulk volume.
2Enter the other two values in kg, m³, or kg/m³.
3Optionally enter true particle density to calculate porosity.
4Set the number of decimal places and review the JSON result with the calculated values.

Use cases

Characterize sand, powders, aggregates, and other granular materials.
Estimate void fraction in porous solids using measured bulk and true densities.
Plan material quantities by converting between mass, bulk volume, and bulk density.

Examples

1. Calculate sand bulk density and porosity

Materials technician

Background

A technician measures 1.6 kg of quartz sand occupying 0.001 m³ and has a true particle density of 2650 kg/m³.

Problem

Calculate the sand's bulk density, porosity, and relative density.

How to use

Select “Bulk density ρ (ρ = m/V)”, enter mass 1.6, volume 0.001, and true density 2650.

Decimal places: 4

Outcome

The calculator returns a bulk density of 1600 kg/m³, porosity of 0.3962 or 39.62%, and relative density of 1.6000.

2. Find bulk volume from mass and density

Production planner

Background

A batch weighs 3.2 kg and has a bulk density of 1600 kg/m³.

Problem

Determine the bulk volume occupied by the batch.

How to use

Select “Bulk volume V (V = m/ρ)”, enter density 1600 and mass 3.2.

Decimal places: 6

FAQ

What formula is used for bulk density?

Bulk density is calculated as ρ_bulk = m/V, where m is mass in kg and V is bulk volume in m³.

Can I solve for mass or volume instead of density?

Yes. Select mass or volume as the unknown and provide the other two required values.

How is porosity calculated?

When true particle density is provided, porosity is calculated as ε = 1 − ρ_bulk/ρ_true.

What units does the calculator use?

The calculator uses kilograms for mass, cubic metres for volume, and kilograms per cubic metre for density.

What is relative density based on?

Relative density is calculated by comparing bulk density with water at 1000 kg/m³.

Run this tool

Examples that match this tool

Continue with connected tools and hubs

Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Overview

When to use

How it works

Use cases

Examples

1. Calculate sand bulk density and porosity

2. Find bulk volume from mass and density

FAQ

Web Image Processing Python Samples

Android Image Processing Java Samples

Android Image Processing Kotlin Samples

macOS Image Processing Objective-C Samples

AHU Coil Capacity Calculator (Cooling / Heating)

Force Unit Converter (Extended: N / kN / dyn / lbf / kgf / poundal)

Hardness Converter (HB / HV / HRC / HRB)

Pipe Pressure Drop Calculator (Darcy-Weisbach)