Bulk Density Calculator

Calculate soil bulk density, dry bulk density, wet bulk density, soil porosity, compaction, core sample volume, soil mass, tons per cubic yard, and soil weight per acre. Use this bulk density calculator for soil testing, compaction checks, topsoil estimates, compost, amendments, and field soil analysis.

Calculate Bulk Density

Bulk Density = Dry Soil Mass ÷ Soil Volume.
Your result will appear here.

How the bulk density calculator works

Bulk density:
The calculator converts mass and volume to standard units, then divides dry mass by sample volume.

Core volume:
If you enter core diameter and height, the calculator estimates cylinder volume for a soil core sample.

Soil porosity:
Bulk density and particle density are used to estimate soil pore space percentage.

Soil weight:
Field acres and soil depth are used to estimate total soil volume, tons, and material cost.

Why use a bulk density calculator?

A bulk density calculator helps estimate soil compaction, soil porosity, soil weight, and material density.

It can help compare core samples, dry soil mass, wet soil mass, soil volume, tons per cubic yard, field soil weight, topsoil orders, and compaction risk.

What your result means

Your result shows estimated dry bulk density, wet bulk density, pounds per cubic foot, tons per cubic yard, soil porosity, core sample volume, moisture weight, field soil weight, material cost, and compaction comparison. These are estimates based on the values you enter.

Bulk density formulas

Frequently asked questions

How do you calculate bulk density?

Divide dry soil mass by total sample volume. For soil cores, volume is usually calculated from the core diameter and height.

What is soil bulk density?

Soil bulk density is the dry mass of soil divided by the total soil volume, including solids and pore space.

How do you calculate soil porosity from bulk density?

Divide bulk density by particle density, subtract that value from 1, then multiply by 100 to get porosity percentage.

Why does bulk density matter?

Bulk density helps evaluate compaction, root growth conditions, water movement, air space, and soil structure.