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Calcimator

Square Foot Garden Calculator

Plan your square foot garden layout with precise plant counts based on spacing and bed dimensions.

Inputs

ft
ft
in
in
in

Results

Plants per Sq Ft

4

Total Plants

64

Total Bed Area32 sq ft
Rows per Bed4
Usable Growing Area32 sq ft
How to Use This Calculator
  1. Enter your bed length and width in feet — 4 ft wide beds are standard so you can reach the center from both sides.
  2. Enter plant spacing in inches (lettuce = 6 in, tomatoes = 18 in, squash = 24 in) and row spacing in inches.
  3. Enter path width inside the bed if you have access paths (enter 0 for a single block bed).
  4. Review Plants per Sq Ft and Total Plants to plan your planting layout.
  5. Use Usable Growing Area to see how much space is actually available for plants after accounting for paths.

How the result changes with Plant Spacing

Plant SpacingPlants per Sq FtTotal Plants
6.63.3156
180.4420
320.1412
430.088

What each input means

Bed Length
Length of the garden bed in feet.
Bed Width
Width of the garden bed in feet. 4ft is standard for reach from both sides.
Plant Spacing
Spacing between plants in inches (e.g., lettuce=6, tomato=18, squash=24).
Row Spacing
Spacing between rows in inches.
Path Width
Width of access paths within the bed (0 for single-block beds).

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Bed Length = 8, Bed Width = 4, Plant Spacing = 6, Row Spacing = 12 = 5 input(s) provided
  2. Calculate Plants per Sq Ft
    Plants per Sq Ft
    4 = 4
  3. Calculate Total Plants
    Total Plants
    64 = 64
  4. Calculate Total Bed Area
    Total Bed Area
    32 = 32
  5. Calculate Rows per Bed
    Rows per Bed
    4 = 4

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