/// Short answer
cubic feet to cubic yards — the planning answer
To convert cubic feet to cubic yards, divide the cubic-foot volume by 27 because one cubic yard contains 27 cubic feet. A 120 ft³ space is 4.4444 yd³ before any allowance. Preserve the original geometric volume first, then convert it to the supplier's unit; waste, compaction, bag yield, and density are separate assumptions, not part of the unit conversion.
How do you estimate cubic feet to cubic yards?
To convert cubic feet to cubic yards, divide the cubic-foot volume by 27 because one cubic yard contains 27 cubic feet. A 120 ft³ space is 4.4444 yd³ before any allowance. Preserve the original geometric volume first, then convert it to the supplier's unit; waste, compaction, bag yield, and density are separate assumptions, not part of the unit conversion.
Cubic yards = cubic feet ÷ 27. The conversion changes units; it does not add waste or change the physical quantity.
/// Continue with the numbers
Run the cubic feet calculator
Use the cubic feet calculator to multiply measured length, width, and height for a box or apply cylinder geometry from diameter and height. It shows cubic feet, cubic yards, cubic meters, and liters without adding density, waste, package coverage, or pricing. Keep every dimension on the same inside-or-outside boundary.
/// Keep the topic connected
Related calculators
Use the neighboring tools to keep each material, layer, and order assumption visible instead of hiding it inside one estimate.
What should you measure first?
Confirm how the cubic-foot volume was obtained and whether it represents a box, cylinder, or a sum of simpler shapes. Review depth and unit conversions before dividing by 27.
- Record length, width, and depth or shape inputs.
- Convert all dimensions to feet before calculating cubic feet.
- Keep base volume, adjusted volume, density, and yield separate.
What should you verify before ordering?
A unit conversion cannot correct incorrect field measurements. Cross-check the result and confirm the supplier's order unit.
- Multiply the yard result by 27 as a reverse check.
- Label cubic feet and cubic yards clearly.
- Use product data for bags, tons, or cartons after conversion.
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Related ProjectQty pages
/// Field-ready worksheet
Download the measurement checklist
Use the worksheet to record dimensions, product-label values, and verification notes locally. ProjectQty does not receive or store your project inputs.
/// Evidence trail
Sources and assumptions
This article inherits the calculator's declared source scope. Product yields, coverage, density, and label rates should be replaced with the exact product selected for the job.
Exact international-foot to meter conversion; U.S. survey-foot conversion is explicitly outside this claim.
NOAA National Geodetic Survey · Prequalified fallbackThe DSDATA Format, Appendix D: U.S. Survey Foot vs International FootIndependent confirmation that one international foot equals exactly 0.3048 meters; U.S. survey-foot conversion remains distinct.
/// Common questions
Cubic Feet to Cubic Yards: The Construction Conversion FAQ
Why is a cubic yard 27 cubic feet?
A yard is three feet in each dimension, so 3 × 3 × 3 equals 27 cubic feet.
Does converting add waste?
No. Conversion only changes units. Add any planning allowance separately and show it explicitly.
Can I convert cubic yards to tons?
Yes, when the supplier provides the product density or tons-per-yard value. The material determines the weight conversion.