Quick answer
Estimate soil volume for beds, planters and leveling projects from measured area and target depth. Use the working RenoMetric calculator below for the actual estimate, then use this page to check assumptions, package rounding and project-specific considerations.
Open the working Mulch calculator
Formula
Worked planning example
A 12 × 8 ft bed filled 6 in deep needs about 48 ft³, or roughly 1.78 yd³, before settling allowance.
Common uses
- Raised beds
- Garden beds
- Lawn leveling
- Planter filling
How to get a better estimate
Measure the actual project rather than relying on listing dimensions. For irregular spaces, split the surface into simple measurable sections and add the results. Use the exact product label for package coverage, yield, density or square-foot coverage whenever it is available.
Keep waste and package rounding as separate steps. Waste covers cuts, breakage, pattern matching and unavoidable offcuts. Package rounding reflects the fact that many materials are sold only in complete bags, boxes, bundles or cans.
Before you buy: this page is a planning guide, not a contractor quotation or structural design. Verify final quantities with the product manufacturer, supplier or installer when project conditions could materially change the result.
Soil Calculator FAQ
How deep should garden soil be?
Depth depends on the project and plant type. Enter the depth you actually plan to install rather than relying on a generic default.
Should I allow for settling?
Yes when the material will compact or settle. A modest planning allowance can reduce the chance of coming up short.
Can I calculate several beds together?
Yes. Calculate each bed separately and add the volumes, especially when depths differ.