Custom Plant Spacing Calculator

Uses your own spacing and floors each bed dimension separately before multiplying positions.

Growing length

Growing width

Plant spacing

Estimate positions in a rectangular area using a custom square-grid spacing.

Formula: floor(length in inches ÷ spacing) × floor(width in inches ÷ spacing).

Use this when you already know the spacing

Enter a spacing from a seed packet, cultivar guide or your own tested system. The tool does not substitute a generic crop value.

Edge effects are intentional

The calculation uses whole positions that fit inside the entered rectangle. It does not assume a partial row becomes an extra plant.

Use Custom Plant Spacing Calculator when you already know the spacing

The calculator floors length and width separately before multiplying, which prevents a leftover fraction along one dimension from being counted as a complete extra planting position.