Tree Spacing Calculator
Calculate how many trees fit in an area and the right spacing for the species.
Last updated · View algorithm, constants and default inputs (JSON)
About this calculator
Choose a tree type and spacing factor to estimate a square-grid layout. The spread values are fixed planning assumptions, not cultivar-specific horticultural guidance; actual mature size and recommended spacing vary with rootstock, pruning, soil and climate. Check local extension guidance and leave room for access and utilities.
Worked example
calculated with the default values below
Area length 200 ft · Area width 100 ft · Tree type Apple, standard (25 ft spread) · Spacing allowance Orchard (1.25× spread) Mature canopy spread 25 ft · Spacing between trees 31.3 ft · Trees across the width 4 · Trees along the length 7 · Total trees 28 · Note Some fruit trees need a pollination partner of a different variety planted nearby
General background references
Disclaimer
These are general gardening estimates. Planting windows, growth, water and nutrient needs vary by place and plant. Check local extension guidance and product labels before acting on an estimate.
Implementation source
This record describes the implementation used by this page. It is not independent validation. External references, when available, support only the stated formula or definition; estimates and custom rules retain their own assumptions.
Formula and variables
d = s × f; N = (⌊W ÷ d − 0.001⌋ + 1) × (⌊L ÷ d − 0.001⌋ + 1)
- d
- Spacing
- s
- Mature spread (lookup)
- f
- Density factor
- W
- Area width
- L
- Area length
- N
- Total trees
s: 6–60 by tree type; f: tight 1, orchard 1.25, open 1.6. Rows/columns are floored at 0.
Frequently asked questions
How does the calculator estimate the number of trees?
It multiplies the selected mature-spread reference by a density factor to set spacing, then counts grid positions that fit the entered area. The result is a layout estimate; mature spread and site conditions vary.