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For feedback and calculation corrections, email contact@topsoilcalc.tools.

This website does not sell topsoil or arrange deliveries.

Report a calculation issue

Include the shape, dimensions and units for each area, added depth, allowance, bag volume, supplier increment, optional density and prices. Tell us the result shown, the result you expected and the browser you used.

A shared estimate link can reproduce the measurements. Check its contents before sharing; do not put private information in area names.

Supplier and gardening questions

For delivery capacity, current prices, soil composition, moisture, compaction or an appropriate growing mix, ask your supplier or local extension service. The calculator does not sell topsoil.

Check the formulas and assumptions before reporting a discrepancy.

Last revised 2026-10-19.