Observed arrival · 2026-09-17
The Topsoil Calculator That Explains Its Math
MaterialYardage calculates the soil volume, estimated weight, and bag count for a garden area in imperial or metric units.
Field notes
The page converts length, width, and depth into supplier-facing quantities, showing cubic yards, cubic meters, cubic feet, estimated tons, and equivalent 0.75-cubic-foot bags. It also lets users select among four material types with different approximate densities, from compost at about 0.6 tons per cubic yard to unscreened topsoil at about 1.1. For non-rectangular beds, the instructions suggest dividing the area into rectangles, averaging widths, or treating curves as circles and ovals.
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