There are 27 cubic feet in a cubic yard. A yard is 3 feet, so a cubic yard is 3 × 3 × 3 = 27 cubic feet — picture a cube as tall, wide, and deep as a kitchen counter is high.
The conversions you actually use
| 1 cubic yard equals | Amount |
|---|---|
| Cubic feet | 27 |
| Cubic inches | 46,656 |
| Cubic meters | 0.765 |
| 2 cu ft mulch bags | 13.5 |
| 0.75 cu ft (40 lb) soil bags | 36 |
| 5-gallon buckets | ~40 |
| Standard wheelbarrow loads (4 cu ft) | ~7 |
The 5-gallon bucket and wheelbarrow rows explain why bulk delivery exists: moving one yard of material by bucket means 40 trips. Those equivalents are where most real questions start: how many bags of mulch in a yard, how much a yard of topsoil weighs, or cubic yards to tons for gravel.
How many cubic feet in a yard of soil?
A yard of soil is 27 cubic feet — the same as a yard of topsoil, dirt, mulch, or gravel, because “a yard” of any landscape material means one cubic yard. In bag terms that is 36 bags of 0.75 cu ft topsoil, 27 bags at 1 cu ft, or 18 bags at 1.5 cu ft. One thing does differ for soil: it settles 15–20% after watering, so a yard spread today reads closer to 22–23 cubic feet next month. The topsoil calculator builds that allowance in and converts your area straight to yards, tons, and bags.
Going from measurements to cubic yards
Landscape materials are quoted in cubic yards but you measure your space in feet and inches. The conversion is one line:
cubic yards = length (ft) × width (ft) × depth (ft) ÷ 27The trap is depth: it is usually in inches, so divide by 12 first. A 10 × 20 ft area at 3 inches deep is 10 × 20 × 0.25 = 50 cubic feet, and 50 ÷ 27 ≈ 1.85 cubic yards.
Every calculator on this site — the mulch calculator, topsoil calculator, gravel calculator, and the rest — runs this conversion for you and adds the material-specific extras like tons and bag counts.