Construction & Materials
Soil Calculator
Use this soil calculator to plan garden beds, topsoil, compost, and fill volume.
Estimated quantity
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- Volume with waste
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- Cubic yards
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- Estimated material cost
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Student quick launch
Grade planning, algebra checks, and formulas students reach for most.
Study path
Use this calculator with
Follow these when you want the formula behind the answer, a short lesson, or nearby tools in the same topic.
What the soil calculator solves
Use this soil calculator to plan garden beds, topsoil, compost, and fill volume.
Formula
How to use it
- Enter length and width in feet.
- Enter depth or thickness in inches.
- Use the package yield or truckload yield to round up material.
How to read the answer
Raised beds can require more soil than expected because depth is measured across the full bed footprint.
Common mistakes and edge cases
- Mixes settle after watering.
- Bag sizes vary by brand.
- Use inside bed dimensions when boards take up space.
Worked examples
Raised bed
Estimated quantity
20 bags
Lawn leveling
Estimated quantity
15 bags
Frequently asked questions
Why show both cubic feet and cubic yards?+
Bags often list cubic-foot yield, while bulk concrete, soil, mulch, and aggregate are commonly ordered in cubic yards.
Does this replace a contractor estimate?+
No. It is a planning calculator. Site conditions, compaction, forms, slopes, and local material packaging can change the order quantity.
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Last updated: May 15, 2026