Almost every garden calculation starts with area: seed, fertiliser, mulch, sod. Real gardens are rarely a single rectangle, so the trick is to split them into simple shapes and add them up.
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Enter up to three sections as rectangles, circles, triangles or ovals. The calculator adds them up and converts the total into square metres, square feet, square yards, acres or hectares.
rectangle = length × width circle = π × diameter² ÷ 4 triangle = base × height ÷ 2 oval = π × length × width ÷ 4 total = sum of sections
Splitting an irregular area into simple shapes is the standard way to measure gardens. Small gaps and overlaps rarely matter for buying materials.
A 10 × 5 m lawn (50 m²), a 3 m round bed (7.07 m²) and a triangular corner with a 4 m base and 3 m height (6 m²) add up to 63.07 m², about 679 sq ft.
Split it into rectangles, triangles and circles, work out each area and add them together.
43,560 square feet, or about 4,047 square metres.
Multiply square metres by 10.764.
Treat it as part of a circle or oval, or split it into several smaller straight-edged sections.