Cubic Ft Calculator

Cubic Feet (ft³) Calculator

Calculate volume for mulch, soil, concrete, or shipping

Feet (ft) Inches (in) Yards (yd) Meters (m) Centimeters (cm)
$

Calculation Results:

Total Volume (ft³):
Total Volume (yd³):
Total Volume (m³):
Estimated Total Cost:

How to Calculate Cubic Feet

Cubic feet is a unit of volume. To calculate it, you must measure the length, width, and height of an object or space. The standard formula for volume is:

Volume = Length × Width × Height

Standard Conversion Rules:

  • If measuring in inches: Divide the total cubic inches by 1,728.
  • If measuring in yards: Multiply the total cubic yards by 27.
  • If measuring in meters: Multiply the total cubic meters by 35.315.

Common Applications

This calculator is essential for several practical tasks:

  • Landscaping: Determining how many cubic yards of mulch or topsoil you need for a garden bed.
  • Construction: Calculating the amount of concrete needed for a slab or foundation.
  • Shipping & Logistics: Measuring box volume to determine shipping rates or storage unit capacity.
  • HVAC: Determining the air volume of a room to select the correctly sized AC unit or heater.

Example Calculation

If you have a planter box that is 6 feet long, 2 feet wide, and 1 foot deep:

6 ft × 2 ft × 1 ft = 12 Cubic Feet.

If mulch costs $4.00 per cubic foot, your total cost would be 12 × 4.00 = $48.00.

function calculateCubicVolume() { var length = parseFloat(document.getElementById('calc_length').value); var width = parseFloat(document.getElementById('calc_width').value); var height = parseFloat(document.getElementById('calc_height').value); var units = document.getElementById('calc_units').value; var costPerUnit = parseFloat(document.getElementById('calc_cost_unit').value); if (isNaN(length) || isNaN(width) || isNaN(height) || length <= 0 || width <= 0 || height 0) { var totalCost = totalCubicFeet * costPerUnit; document.getElementById('res_cost').innerHTML = "$" + totalCost.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2}); document.getElementById('cost_label').style.display = "block"; document.getElementById('res_cost').style.display = "block"; } else { document.getElementById('cost_label').style.display = "none"; document.getElementById('res_cost').style.display = "none"; } document.getElementById('calc_results').style.display = "block"; }

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