Soil and Beds
Soil Porosity Calculator
Use Soil Porosity when you need to estimate pore space from bulk and particle density. It calculates estimated porosity from the measurements shown below.
Enter values for estimated porosity
Keep Soil Porosity units with their measurements.
Estimated porosity: condition to verify
Organic soils may not match the default mineral particle density. For comparison, Weighted Soil pH Calculator reports area-weighted pH.
A zero Particle density leaves estimated porosity undefined in Soil Porosity. After this result, Soil Amendment Blend Calculator can calculate the amendment percentage in a finished soil blend.
Measurements for Soil Porosity
Soil Porosity uses Bulk density and Particle density. The Soil Porosity entries share one scope.
- Bulk density
- Default in Soil Porosity: 1.32 g/cm³.
- Particle density
- Default in Soil Porosity: 2.65 g/cm³.
Collecting data for Soil Porosity
Keep the laboratory method or field-test procedure with estimated porosity. Similar names can refer to different analytical bases.
Formula for estimated porosity
Soil Porosity compares Bulk density and Particle density and reports the relationship as a percentage.
Using bulk density at 1.32 g/cm³ and particle density at 2.65 g/cm³, the example returns 50.19%.
Using the Soil Porosity result
Read Estimated porosity as the answer to “Estimate pore space from bulk and particle density.” Keep the Soil Porosity units attached.
Organic soils may not match the default mineral particle density. Check bulk density before applying estimated porosity.
After calculating estimated porosity
The calculation log for Soil Porosity needs Bulk density and Particle density plus Estimated porosity.
Attach the date and source of bulk density; those details matter when the case is repeated.
Keep the measured outcome next to the estimated porosity estimate so future planning can use both.
Bulk density: sensitivity example
In a Soil Porosity sensitivity check, compare bulk density at 1.32 g/cm³ and 1.452 g/cm³. Estimated porosity evaluates to 50.19% and 45.21%, respectively. The calculation for infiltration rate remains in Soil Infiltration Rate Calculator.
Both cases hold particle density unchanged; preserve the other Soil Porosity inputs too.
Prefer measured bulk density ranges in Soil Porosity.
Before relying on estimated porosity
Can Particle density be zero in Soil Porosity?
In Soil Porosity, zero particle density makes estimated porosity undefined.
How does “Organic soils may not match the default mineral particle density.” affect estimated porosity?
The formula cannot infer that condition from the other entries. Verify bulk density before treating the result as a field target.
How much soil variation can Soil Porosity show?
Only variation captured by the entered measurements. Several zones may need separate estimated porosity cases.