Convert between cubic yards and tons for construction materials based on density.
Last updated: March 2026 | By ForgeCalc Engineering
In construction, landscaping, and civil engineering, materials are often sold by weight (tons) but occupy space measured in volume (cubic yards). Converting between these units is essential for accurate material ordering, cost estimation, and project planning. A cubic yard is 3 feet × 3 feet × 3 feet = 27 cubic feet of material.
The conversion depends on density—how much a material weighs per unit volume. Concrete weighs about 4,050 lbs/yd³, while mulch weighs only 800 lbs/yd³. This means 1 cubic yard of concrete equals about 2 tons, but 1 cubic yard of mulch is less than half a ton. Knowing these densities prevents over-ordering (wasting money) or under-ordering (delaying projects).
Material suppliers typically sell by weight (tons) for heavy materials like gravel, sand, and stone because it's easier to measure accurately with truck scales. However, project plans specify volume (cubic yards) because that's how much space needs to be filled. This calculator bridges that gap, accounting for typical material densities to give accurate estimates for material orders.
Select whether you're converting from Cubic Yards to Tons (for ordering materials) or Tons to Cubic Yards (for space planning). This determines which unit you'll input.
Choose the material type from the dropdown. Each material has a different density shown in lbs/yd³. Wet materials weigh more than dry; compacted materials weigh more than loose.
Type the quantity you have. The calculator instantly shows the converted value plus equivalent weights in pounds and metric tons for international projects.
The result shows the primary conversion plus additional units. Save calculations to history for reference when ordering multiple materials.
Mike is building a new driveway that measures 60 feet long × 12 feet wide × 6 inches deep. He needs to calculate how many tons of gravel to order from the supplier.
Calculation: 13.33 yd³ × 2,700 lbs/yd³ ÷ 2,000 lbs/ton = 18 tons
Mike orders 18 tons of gravel. Adding 10% extra for compaction and spillage (20 tons total) ensures he has enough material to complete the driveway without delays or additional delivery charges.
It depends on the material. A cubic yard of concrete weighs ~4,050 lbs (2 tons), gravel ~2,700 lbs (1.35 tons), topsoil ~2,160 lbs (1.08 tons), and mulch ~800 lbs (0.4 tons). Always check with your supplier for exact densities.
Suppliers sell by weight (tons) for accuracy and ease of measurement. Your project specs use volume (cubic yards) for space requirements. Use this calculator to convert between them for accurate ordering.
Moisture content, compaction, particle size, and material composition all affect density. Wet sand weighs more than dry sand. Compacted gravel weighs more than loose gravel. Always specify the condition when ordering.
Add 5-10% for compaction, spillage, and irregular surfaces. For gravel driveways, add 10-15%. For fill dirt, add 15-20% due to settling. Better to have extra than pay for emergency deliveries.
A US ton (short ton) = 2,000 lbs. A metric ton (tonne) = 1,000 kg ≈ 2,204.6 lbs. Most US suppliers use short tons. International projects use metric tons. This calculator shows both.
The calculator uses typical densities for dry/damp materials. Saturated materials weigh significantly more. If ordering after rain or for wet applications, consult your supplier for adjusted densities.
Multiply length × width × depth in feet, then divide by 27. For irregular shapes, break into sections. For circular areas, use π × r² × depth ÷ 27. Always measure in feet for US calculations.
Delivery trucks have scale tickets showing actual weight. Slight variations occur due to moisture, compaction during transport, and material density variations. 5-10% variance is normal and acceptable.
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