Compaction Test Calculator
Calculate wet density, dry density, void ratio, and degree of saturation from Proctor compaction test data.
Inputs
ASTM D698: standard Proctor; ASTM D1557: modified Proctor (4.5× energy); field spec typically 95% max dry density
ASTM D2216: sandy soil optimum ~10–14%; clay optimum ~15–25%; measure w=(Wwet–Wdry)/Wdry×100
Results
Dry Density
107.3 pcf
Zero Air Void Density
126.5 pcf
How to Use This Calculator
- Enter wet soil weight (lbs) and mold volume (ft³) from your Proctor test sample.
- Set measured moisture content (%) and soil specific gravity (Gs).
- Review Wet Density, Dry Density (pcf), Degree of Saturation (%), and Void Ratio.
- Compare dry density to the Proctor maximum to calculate compaction percentage.
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