Roadway Fill Volume Calculator
Estimate fill between two roadway sections with the average-end-area method.
Roadway Fill Volume Calculator
Roadway fill results
The average-end-area method uses rectangular sections at the start and end.
Average-end-area fill calculation
Choose rectangular sections for a simple fill estimate, or choose an embankment with side slopes to add the two side-slope triangles at each section. The calculator averages the start and end areas, then multiplies by the station distance.
The compacted result is the geometric in-place volume. The optional allowance adds material for loose delivery and truck-load planning; leave it blank when you only need compacted fill. Use geotechnical or project values when available.
This is a fill-only segment estimate. Separate cut, stripping, unsuitable excavation, topsoil, and material losses instead of netting them into one unverified number.
Related quantity tools
Use the road base calculator for a uniform aggregate layer, or the asphalt calculator for pavement tonnage above the prepared grade.
FAQ
How does the average-end-area method calculate fill?
It averages the fill cross-sectional areas at the start and end of a segment, then multiplies that average by the segment length.
How are roadway side slopes included?
Choose Embankment with side slopes to include the roadbed rectangle plus both side-slope triangles. Enter 2 for a slope of 2 horizontal to 1 vertical; Rectangular fill omits those triangles.
What does the compaction allowance do?
It converts the calculated compacted fill into a larger planning quantity for loose material and truck loads. It is optional and does not change compacted fill; leave it blank when you only need the geometric in-place volume.
Can this calculator handle several stations or cut sections?
This page calculates one fill segment between two sections. Calculate each fill-only segment separately when the profile has more stations, and keep cut and unsuitable material quantities separate.