Soil Calculator
Estimate topsoil quantity in cubic yards or bags
Length of the area
Width of the area
6-12" for new beds
Cubic Yards
—
cu yd
Cubic Feet
—
cu ft
40 lb Bags
—
bags
Estimated Cost
—
USD
Disclaimer: Results are estimates based on standard formulas. Not a substitute for professional advice from a licensed contractor, engineer, or architect. Verify all calculations before making purchasing or construction decisions.
How to Use This Calculator
Our soil calculator converts area dimensions into cubic yards, bags, and estimated cost.
- Measure length and width
- Determine desired soil depth
- Enter measurements
- For raised beds, mix topsoil and compost
Expert Insights
Smart analysis for your Landscaping project
Mulch Depth by Purpose
Weed suppression: 3-4". Moisture retention: 2-3". Decorative: 1-2". AI recommends depth based on your project goals.
Gravel Base Requirements
Driveways: 4-6" compacted base + 2-3" gravel. Paths: 2-3" base + 2" gravel. AI adjusts for vehicle vs foot traffic loads.
Soil Amendment Calculator
AI factors your soil type (clay/sandy/loam) and plant needs to recommend compost and amendment quantities — not just volume.
Calculation Formula
Volume (cu ft) = Length x Width x (Depth / 12)
Cubic yards = Volume / 27
Frequently Asked Questions
How much soil for a raised bed?
A 4x8 ft raised bed, 12" deep, needs about 1.2 cu yd or 32 cu ft of soil.
How much does topsoil cost?
Bulk: $12-$55 per cubic yard. Bagged: $2-$5 per 40lb bag. Delivery adds $50-$150.