Estimate how many plants or seeds fit in a square foot garden, raised bed, or intensive planting layout. Calculate garden squares, usable square feet, plants per square foot, total plants, seeds needed, extra seedlings, and spacing per plant.
Garden bed mode:
The calculator multiplies bed length by bed width to estimate total 1-square-foot garden squares.
Known squares mode:
The calculator uses your entered number of garden squares and plants per square foot.
Mixed crop mode:
The calculator estimates one crop section using only the number of squares assigned to that crop.
Target plants mode:
The calculator estimates how many square-foot sections are needed to grow your target plant count.
A square foot gardening calculator helps plan intensive garden layouts by estimating how many plants, seeds, or seedlings fit into a raised bed or garden grid.
It can help compare plant densities, plan crop sections, estimate unused squares, start the right number of seedlings, and make better use of small garden spaces.
Your result shows estimated garden squares, plants, seeds or seedlings needed, plants per square foot, approximate spacing, extra seeds or seedlings, unused squares, and layout details for a square foot garden bed.
Multiply the number of 1-square-foot sections by the number of plants per square foot for the crop you want to plant.
A 4×8 raised bed has 32 square-foot sections because 4 × 8 = 32.
Divide 12 inches by the square root of plants per square foot. For example, 4 plants per square foot is roughly 6 inches apart.
Yes. Use mixed crop mode and enter the number of squares assigned to one crop. Repeat the calculation for each crop section in the bed.
No. This is an estimate. Actual planting density can vary by crop variety, mature size, trellising, pruning, sunlight, airflow, soil fertility, and growing method.