What is a cubic yard?

A cubic yard (yd³) is a unit of volume equal to a cube 1 yard on each side. Exactly 27 cubic feet (ft³), 46,656 cubic inches (in³), or about 0.7646 cubic meters (m³).

How do I calculate cubic yards for a rectangle or square?

Convert all dimensions to feet, multiply Length × Width × Depth to get cubic feet, then divide by 27. Example: 10 ft × 8 ft × 0.5 ft = 40 ft³ → 40 ÷ 27 ≈ 1.48 yd³.

How do I calculate cubic yards for a circle?

Use π × (Diameter ÷ 2)² × Depth (all in feet) to get ft³, then divide by 27. Tip: If your inputs are in inches or meters, convert them to feet first.

How do I estimate borders, curbs, or edging in cubic yards?

Treat it like a long rectangle: Length × Width × Depth (in feet) = ft³, then ÷ 27. For irregular sections, split into smaller rectangles and sum the results.

I know the area—how do I get cubic yards from depth?

If area is in ft² and depth is in inches, use: yd³ = (Area_ft² × Depth_in) ÷ 324. (Because 27 ft³/yd³ and 12 in/ft → 27×12 = 324.)

Can I mix units like inches, feet, yards, or metric?

Yes. Convert everything to a single system first. Common routes: (a) convert all lengths to feet, compute ft³, then ÷ 27; or (b) convert to meters, compute m³, then ÷ 0.764555 to get yd³.

How much extra should I order for waste or settling?

For most projects, adding 5–10% is sensible to cover compaction, spillage, and measurement uncertainty. For rough or irregular ground, consider 10–15%.

Estimating Cubic Yards — Live Calculator & Guide

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Estimating Cubic Yards — Live Calculator & Guide

Fast, accurate cubic yard estimates for concrete, soil, mulch, gravel, and more.

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