Tool index
Home project calculators
Only tools that are implemented, tested, and available on this website appear in this index. Research candidates are not presented as finished products.
Each live calculator includes visible formulas, explicit assumptions, tested unit conversions, and purchase-planning inputs that rely on current supplier or package information.
Concrete materials
Concrete Calculator
Calculate concrete volume across up to 20 slabs, circular pads, walls, or known-area sections. Plan ready-mix order increments or bag quantities using entered supplier and label information.
- US Customary and Metric
- Ready-mix or bags
- Copy and print estimate
Landscaping materials
Gravel Calculator
Calculate gravel volume across up to 20 driveways, paths, beds, or drainage areas. Plan bulk tons or bags using entered supplier density, order increment, product yield, and material price.
- US Customary and Metric
- Bulk tons or bags
- Copy and print estimate
Landscaping materials
Topsoil Calculator
Calculate topsoil volume across up to 20 rectangular, circular, triangular, or known-area zones. View cubic yards, cubic meters, bags, optional supplier-based weight, order increments, and user-entered material cost.
- US Customary and Metric
- Bulk or bags
- Copy and print estimate
Why are there only three calculators?
Project Toolbench is being built as a measured pilot, not a directory filled with name variations. Unit variants, costs, bag counts, and project shapes are included inside a useful tool when they serve the same task.