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Calcimator

Trench Volume Calculator

Calculate trench excavation volume using trapezoidal cross-section with truck load and excavation time estimates.

Inputs

ft
ft
ft
ft

Results

Volume

1,200 cu ft

≈ 23 hot tubs

Volume

44.44 cu yd

≈ 23 hot tubs

Truck Loads (10 yd)5
Excavation Time1.48 hrs
How to Use This Calculator
  1. Enter Trench Length, Width, and Depth in feet.
  2. If the trench has sloped walls, enter the Slope Ratio (H:V) — this widens the trench at the top.
  3. Read Volume in cu ft and cu yd — use the cubic yard figure when ordering fill or paying for spoil disposal.
  4. Use Truck Loads (10 yd) to schedule haul trucks and Excavation Time to plan equipment rental.
  5. Feed the cu yd output into the Excavation Cost or Backfill Quantity calculators for budget estimates.

How the result changes with Trench Length

Trench LengthVolumeVolume
1,00012,000 cu ft444.44 cu yd
3,50042,000 cu ft1,555.56 cu yd
6,50078,000 cu ft2,888.89 cu yd
9,000108,000 cu ft4,000 cu yd

What each input means

Trench Length
Total length of the trench.
Top Width
Width of the trench at ground level.
Bottom Width
Width at the bottom of the trench.
Trench Depth
Depth from ground surface to trench bottom.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Trench Length = 100, Top Width = 4, Bottom Width = 2, Trench Depth = 4 = 4 input(s) provided
  2. Calculate Volume
    Volume
    1200 = 1200
  3. Calculate Volume
    Volume
    44.44 = 44.44
  4. Calculate Truck Loads
    Truck Loads
    5 = 5
  5. Calculate Excavation Time
    Excavation Time
    1.48 = 1.48

Engine last updated . Checked against 2 independently-derived tests — how we verify calculators.

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