Math & Engineering
Square Feet to Cubic Yards Calculator
Convert square feet measurements to cubic yards by entering the area and depth. Ideal for construction and landscaping projects.
Reviewed by the calculator.uk.com Team · Last reviewed 16 July 2026 · Our methodology
Enter the area in square feet and depth to calculate the volume in cubic yards
This calculator converts area measurements in square feet (ft²) to volume measurements in cubic yards (yd³) by incorporating depth. The conversion process follows a two-step calculation:
Step 1: Calculate Cubic Feet
First, we multiply the area in square feet by the depth in feet to get the volume in cubic feet (ft³): Volume (ft³) = Area (ft²) × Depth (ft)
Step 2: Convert to Cubic Yards
Then, we convert the cubic feet to cubic yards using the conversion factor: 1 cubic yard = 27 cubic feet Volume (yd³) = Volume (ft³) ÷ 27
This calculator is particularly useful for construction, landscaping, and material estimation projects where materials are often sold by the cubic yard but measurements are taken in feet.
The calculator provides results in both cubic yards (yd³) and cubic feet (ft³) for comprehensive understanding and practical application. Here's how to interpret and use the results:
Cubic Yards (yd³)
This is the primary measurement used for ordering bulk materials like soil, mulch, gravel, or concrete. Most suppliers sell these materials by the cubic yard, making this measurement directly applicable for purchasing.
Cubic Feet (ft³)
This measurement is useful for smaller projects or when working with materials sold by the cubic foot. It also helps in understanding the volume in more familiar terms, as feet are commonly used in everyday measurements.
1. Why do I need to convert square feet to cubic yards?
Converting square feet to cubic yards is essential when you need to calculate the volume of materials needed for a project where you have measurements in square feet and depth. This is common in landscaping, construction, and gardening projects where materials are sold by volume (cubic yards) but ground measurements are taken in square feet.
2. How accurate are the conversion results?
The calculator provides results rounded to two decimal places, which is more than sufficient for most practical applications. The conversion uses the exact ratio of 1 cubic yard = 27 cubic feet, ensuring accurate results within the rounding limit.
3. Should I order exactly the calculated amount of material?
It's recommended to order 10-15% more material than the calculated amount to account for compaction, settling, and potential waste. This is especially important for materials like soil, mulch, and gravel that will compress over time.
4. What are the typical applications for this calculator?
This calculator is commonly used for: calculating soil needed for raised beds or garden areas, determining mulch volume for landscaping projects, estimating concrete volume for slabs or foundations, calculating gravel needed for driveways or pathways, and determining fill material needed for leveling or grading projects.
5. What is the scientific source for this calculator?
The 27 conversion factor is exact, not empirical — a cubic yard is defined as a cube measuring 3 feet on each side (3 × 3 × 3 = 27 cubic feet), a fixed relationship within the US customary system of measurement rather than something derived from research or testing.