Start with a sketch of the surface you actually intend to cover. Leave out buildings, beds, and permanent features that do not receive material.

How to plan it
- Mark each straight edge in feet
- Split the sketch into rectangles, triangles, or circles
- Add the areas and record exclusions separately
Check before buying: Measure more than once where boundaries bend or taper.
Turn this into a quantity
Record your site measurements first. Then use a calculator with the depth, application rate, or coverage from the actual material specification.
Open yard area calculatorSource and limits
University of Maryland Extension: Determining the area/size of a practice. Local conditions and manufacturer guidance may call for different materials or installation details.