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Calcimator

Sandbox Volume Calculator

Sand volume from sandbox dimensions and fill depth.

Inputs

Results

Sand Volume (cu ft)

30

Total Weight (lbs)

3,000

Bags Needed

60

Sandbox Area (sq ft)36
Sand Volume (cu yd)1.11
Total Weight (tons)1.5
Bag Cost ($)$300.00
Bulk Cost ($)$95.00
Max Simultaneous Children1
How to Use This Calculator
  1. Enter the sandbox length/diameter and width in feet, and the desired sand depth in inches (8-12 inches recommended).
  2. Toggle circular (1) or rectangular (0) to match your sandbox shape.
  3. Input the bag size in pounds (typically 50 lbs) and the cost per bag.
  4. Review total sand volume in cubic feet, total weight in pounds, and the number of bags to purchase.
  5. Compare the bag cost against the bulk delivery cost to find the most economical option.

How the result changes with Length or Diameter (ft)

Length or Diameter (ft)Sand Volume (cu ft)Total Weight (lbs)Bags Needed
5.929.52,95059
18909,000180
3316516,500330
4522522,500450

What each input means

Length or Diameter (ft)
Length of rectangular sandbox, or diameter if circular.
Width (ft)
Width of rectangular sandbox (ignored for circular).
Sand Depth (inches)
Recommended: 8-12 inches for safe, comfortable play.
Circular? (0=Rect, 1=Circle)
0 = rectangular, 1 = circular (uses Length as diameter).
Bag Size (lbs)
Weight per bag of play sand (typically 50 lbs).
Cost per Bag ($)
Price per bag of play sand.

What each result means

Sandbox Area (sq ft)
Total play surface area.
Sand Volume (cu ft)
Cubic feet of sand needed.
Sand Volume (cu yd)
Cubic yards (for bulk ordering).
Total Weight (lbs)
Total weight of dry sand needed.
Total Weight (tons)
Weight in short tons.
Bags Needed
Number of bags to purchase (rounded up).
Bag Cost ($)
Total cost buying individual bags.
Bulk Cost ($)
Estimated cost for bulk delivery (~$30/ton + $50 delivery).
Max Simultaneous Children
Based on 25 sq ft per child recommendation.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Length or Diameter (ft) = 6, Width (ft) = 6, Sand Depth (inches) = 10, Circular? (0=Rect, 1=Circle) = 0 = 6 input(s) provided
  2. Calculate Sand Volume
    Sand Volume = areaSqFt * depthFt
    30 = 30
  3. Calculate Total Weight
    Total Weight = volumeCuFt * sandDensityLbPerCuFt
    3000 = 3000
  4. Calculate Bags Needed
    Bags Needed
    60 = 60
  5. Calculate Sandbox Area
    Sandbox Area
    36 = 36
  6. Calculate Sand Volume
    Sand Volume = volumeCuFt / 27
    1.11 = 1.11

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

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