Row Spacing Calculator

Estimate how many planting rows fit in a garden bed, raised bed, field strip, or planting area. Calculate row count, plants per row, total plants, seed count, row spacing, plant spacing, usable area, and planting density.

Calculate Row Spacing

Rows = Usable Bed Width ÷ Row Spacing. Plants Per Row = Usable Row Length ÷ Plant Spacing.
Your result will appear here.

How the row spacing calculator works

Rows from spacing:
The calculator divides usable bed width by row spacing to estimate how many rows fit.

Spacing from target rows:
The calculator divides usable bed width by your target row count to estimate row spacing.

Plant count mode:
The calculator estimates rows, plants per row, and total plants based on row spacing and plant spacing.

Seed count mode:
The calculator estimates total seeds needed after seeds per spot, germination rate, and extra seed are included.

Why use a row spacing calculator?

A row spacing calculator helps plan garden bed layouts before planting rows of vegetables, flowers, herbs, cover crops, or field-style crops.

It can help estimate how many rows fit, how many plants fit in each row, how many seeds to start, and whether your row spacing is too tight or too wide for the planting area.

What your result means

Your result shows estimated rows, calculated row spacing, plants per row, estimated plants, estimated seeds, usable bed dimensions, planting density, extra plants or seeds, and a row layout summary.

Row spacing formulas

Frequently asked questions

How do I calculate row spacing?

Subtract any edge buffer from the bed width, then divide the usable width by the row spacing. This estimates how many rows fit across the bed.

What is the difference between row spacing and plant spacing?

Row spacing is the distance between rows. Plant spacing is the distance between plants within a row.

How do I calculate spacing if I know how many rows I want?

Divide usable bed width by the target number of rows. The result is the approximate row spacing needed to fit that many rows.

Should I leave a buffer around garden rows?

Yes. A buffer keeps plants from growing directly against bed edges and helps leave room for roots, leaves, labels, irrigation, and maintenance.

Is this row spacing calculator exact?

No. This is an estimate. Actual row spacing can vary by crop variety, mature plant size, pruning, trellising, airflow needs, sunlight, and growing method.