Free calculator
Plant Spacing Calculator
Calculate bed planting density and approximate quantities for square, row and staggered layouts.
Open calculator →Garden project hub
Planting & spacing
The calculator can count a layout; the plant label, nursery or reliable guidance should decide the spacing.
Use the right quantity tool
Calculators for planting & spacing
Plan beds and borders from user-selected spacing, then move to dedicated hedge or tree geometry when the project changes.
Free calculator
Compost Calculator
Estimate compost spread over beds and borders using the area, chosen depth and actual bag size.
Open calculator →Free calculator
Raised Bed Soil Calculator
Calculate the growing-medium volume needed inside a raised bed, including existing fill where relevant.
Open calculator →Free calculator
Pot & Container Compost Calculator
Calculate compost for round, tapered and rectangular pots using internal dimensions.
Open calculator →Before you order
Keep the project decisions separate from the arithmetic
Spacing is centre-to-centre geometry
Square grids, separate row spacing and staggered layouts give different densities. The calculator exposes the geometry without claiming one spacing suits every species.
Bed area is only the start
Known square metres can estimate density, but a rectangular layout can also show rows and plants per row. Irregular beds are better measured first and treated as an approximation unless the design is fully set out.
Containers and raised beds are separate fill jobs
Use the pot or raised-bed calculators for growing-medium quantity; then use Plant Spacing only for the planting layout.
Supporting guidance
Read the guide when the difficult part is choosing the input
Practical guide
Plant Spacing Guide
Understand centre-to-centre spacing, plants per square metre and square versus staggered layouts.
Read guide →Continue the project
Useful next routes
Move to the next quantity only when it describes a genuinely different part of the job.
Hedges & treesSwitch to linear hedge runs or larger tree-density planning.Raised beds & containersCalculate the growing-medium volume before arranging plants.Read the spacing guideUnderstand square, row and staggered layouts before entering a spacing.Measure the bedGet a reliable footprint before planning density.