Landscaping Material API

Landscaping material estimating as an API — the "how much mulch, soil or gravel do I need" maths, computed locally and deterministically. The coverage endpoint works out the volume to cover an area at a depth — in cubic yards, cubic metres, cubic feet and litres — and, given a material or a custom bulk density, the weight in US tons, tonnes and kilograms, plus the number of bags for a given bag size. The area can be entered directly or as a rectangular, circular or triangular bed, and depth in inches, centimetres, feet or metres. The depth endpoint is the inverse: it works out the depth that an available volume (or a number of bags) gives over an area — handy when you already have a load of material. The material endpoint is a reference of typical bulk densities (mulch, compost, topsoil, gravel, sand) and how much area one cubic yard covers at 1 to 4 inch depths. Everything is computed locally and deterministically, so it is instant and private. Densities are typical values and bulk material varies with moisture and compaction, so order around 5–10% extra. Ideal for landscaping and garden-centre tools, hardscaping and bulk-material retailers, and DIY and yard-project planners. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This is landscaping-material estimating; for paint, tiles, concrete and bricks use a construction-calculator API.