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Grid Levelling Volume Calculator

Work out grid levelling volume instantly with clear inputs, formula shown and shareable results.

About Grid Levelling Volume Calculator

In the grid or borrow pit method, each spot level contributes according to how many squares share it: corner points once, edge points twice, interior points four times. Volume is a quarter of the grid area times the weighted sum of depths, which is simply the average depth over the whole area expressed efficiently.

Formula

Grid volume

V = (grid area / 4) x (sum h1 + 2 sum h2 + 4 sum h4)

Worked example

With the default values below, Grid Levelling Volume Calculator returns Earthwork volume of 755.00. Change any input above and every figure here is recalculated in your browser.

Inputs used

Grid square sideminimum 0.1 m
10 m
Sum of depths used onceminimum 0 m
4.2 m
Sum of depths used twiceminimum 0 m
6.8 m
Sum of depths used four timesminimum 0 m
3.1 m

Results

Earthwork volume
755.00 m³
Area of one grid square
100.00 m²
Weighted sum of depths
30.200 m
Effective average depth
4.3143 m

Step by step

  1. 1Values used
  2. 2Grid volume
  3. 3Earthwork volume= 755.00 m³
  4. 4Area of one grid square= 100.00 m²
  5. 5Weighted sum of depths= 30.200 m
  6. 6Effective average depth= 4.3143 m

Assumptions and limits

  • The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
  • Figures are rounded for display to 4 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

How is the Grid Levelling Volume figure worked out?

V = (grid area / 4) x (sum h1 + 2 sum h2 + 4 sum h4). In the grid or borrow pit method, each spot level contributes according to how many squares share it: corner points once, edge points twice, interior points four times.

Does the grid size affect accuracy?

Yes. A coarse grid misses local highs and hollows. Grid spacing should be close enough that the ground can be treated as planar within each square, typically 10 to 20 metres on open sites.

What values do I need to enter?

This calculator takes 4 inputs: Grid square side, Sum of depths used once, Sum of depths used twice, Sum of depths used four times. The pre-filled defaults are a realistic worked example — replace them with your own site or project figures.

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