Row Spacing Calculator
Estimate how many rows fit in a garden bed or growing space based on width and row spacing.
Calculate row count
Enter the bed or field width and the spacing between rows. This calculator estimates how many full rows fit.
4 rows
Based on 4 ft of width and 12 inches between rows.
How to use this calculator
Enter the width of the bed or growing block (in feet) and the row spacing recommended for your crop (most crops use inches). The calculator rounds down to whole rows that actually fit, and shows how much leftover space you'll have.
Tips for success
- Use crop-specific spacing. Row spacing varies widely -- lettuce at 6-8 in, bush beans at 12-18 in, tomatoes at 24-36 in. Check your seed packet or a cooperative extension guide for your variety.
- Intensive beds can go tighter. Raised beds tended from outside can reduce spacing 20-30% vs. field production because you never walk between rows.
- Leave walking access if needed. For in-ground plots, reserve 18-24 in between row groups for access. This calculator counts plantable rows only -- subtract any path rows before entering width.
- Leftover space can be useful. Use narrow leftover strips for edging crops like chives, parsley, or low herbs that tolerate tight quarters.
- This calculator rounds down. Partial rows aren't counted -- only whole rows that fully fit within the available width.
Practical note
This is a useful planning tool for beds, garden blocks, and efficient food-growing layouts. Common row spacings: lettuce/spinach 6-8 in, bush beans/carrots 12-18 in, tomatoes/peppers 24-36 in, corn/squash 36-48 in. Always confirm with the seed packet for your specific variety.
FAQ
What's the right row spacing for my crop?
Common row spacings: lettuce and spinach 6 to 8 inches, bush beans and carrots 12 to 18 inches, tomatoes and peppers 24 to 36 inches, corn and squash 36 to 48 inches. These are centerline-to-centerline distances. Tighter spacing crowds the plants and reduces airflow; wider spacing wastes space. Seed packets and extension guides are the best source for your specific variety.
Can I plant rows closer together to fit more plants?
You can reduce spacing by 20 to 30 percent in raised beds and intensive growing systems because you're tending the bed from outside rather than walking between rows. In field plantings tighter spacing cuts yield per plant and raises disease risk from poor airflow. The tradeoff is usually flat -- more plants x smaller yield per plant often equals the same total harvest, so only squeeze rows if you have a real space constraint.
Should I leave walking space between rows?
Yes for field plantings and most in-ground gardens. Allow 18 to 24 inches between working rows for small equipment or a wheelbarrow, or 12 inches for hand-tending. Raised beds 3 to 4 feet wide are tended from either side and don't need internal walking rows. This calculator counts plantable rows in your bed width, subtract walking rows from your total before entering if you want an accurate count.
Does this calculator work for raised beds?
Yes. Enter the bed's usable planting width (skip the inside of any frame), the row spacing for your crop, and you'll get the number of rows that fit. For a 4-foot-wide raised bed with 12-inch row spacing, that's 4 rows. For 18-inch spacing, 2 to 3 rows depending on whether you center the outermost rows against the frame.
How wide should each row be?
Rows are linear -- width refers to the plant spacing along the row, not the row itself. If you want a wider planting band (ribbon planting for lettuce, carrots, or beets), treat each band as one row in this calculator but use in-band spacing guides for the band's plant count. For single-file row planting, just use the seed packet's in-row spacing between plants.