Work out cut and fill volume instantly with clear inputs, formula shown and shareable results.
The average end area method gives volume between two surveyed cross-sections as the mean of the two areas times the distance between them. Comparing the cut so obtained with the fill needed over the same length shows whether the earthworks balance or whether material must be imported or carted away, which is usually the largest single cost in a road contract.
Average end area
V = (A1 + A2) / 2 x distance
Balance
Net = cut volume - fill volume
V = (A1 + A2) / 2 x distance. The average end area method gives volume between two surveyed cross-sections as the mean of the two areas times the distance between them.
Yes, where the section changes shape quickly. Average end area always over-estimates slightly on a transition; the prismoidal correction removes that bias.
This calculator takes 4 inputs: Cut cross-section at first station, Cut cross-section at second station, Distance between stations, Fill required over the same length. The pre-filled defaults are a realistic worked example — replace them with your own site or project figures.