How the calculator works
The math on this page fits on one line: trees equal your usable land area divided by the land each tree takes, and each tree takes its row spacing multiplied by its plant spacing. One acre holds 43,560 square feet, and one kanal holds 5,445 square feet, with eight kanal to the acre in Punjab land records. Enter the area in acres, kanal, square feet, square meters, or hectares, and the calculator converts before it counts.
The result comes out two ways on purpose: the exact count with its decimal, and the whole trees rounded down. Order by the rounded-down figure. A field cannot hold four tenths of a tree, and nurseries that round every fraction upward sell seedlings that end their lives in a heap by the gate.
Two settings deserve a word each. The triangular layout offsets alternate rows and fits about 15 percent more plants at the same spacing, a standard result of the geometry, and the calculator multiplies by 1.1547 and labels the gain. The usable-area percentage admits what every farmer already knows: borders, paths, and a water course take real land, and a block that plants 90 percent of its paper area should count its trees on 90 percent.
Trees per acre by spacing
The table below gives the exact trees per acre for square spacings from 8 by 8 feet to 40 by 40 feet, plus three rectangular spacings that mixed blocks often use, all under the rectangular layout.
| Spacing (feet) | Land per tree (sq ft) | Trees per acre |
|---|---|---|
| 8 x 8 | 64 | 680.6 |
| 10 x 10 | 100 | 435.6 |
| 12 x 12 | 144 | 302.5 |
| 15 x 10 | 150 | 290.4 |
| 15 x 15 | 225 | 193.6 |
| 20 x 15 | 300 | 145.2 |
| 18 x 18 | 324 | 134.4 |
| 20 x 20 | 400 | 108.9 |
| 30 x 20 | 600 | 72.6 |
| 25 x 25 | 625 | 69.7 |
| 30 x 30 | 900 | 48.4 |
| 35 x 35 | 1,225 | 35.6 |
| 40 x 40 | 1,600 | 27.2 |
The candle chart below reads the four crop presets as ranges: each candle starts at the square grid count and rises to the triangular layout count at the same spacing, which is the honest size of the offset-row gain.
Crop spacing presets and their counts
The table below lists the preset spacings built into the calculator, with the count each one gives on one acre, and each preset stands as a starting point to confirm with local agriculture guidance for your district and variety.
| Crop and system | Preset spacing | Exact count per acre | Whole trees to order |
|---|---|---|---|
| Mango, traditional | 30 x 30 ft | 48.4 | 48 |
| Mango, high density (regular pruning) | 10 x 10 ft | 435.6 | 435 |
| Citrus and kinnow | 20 x 20 ft | 108.9 | 108 |
| Guava | 15 x 15 ft | 193.6 | 193 |
High density mango earns its count with a condition attached: the system holds tree size by regular pruning, season after season. A grower who cannot commit the pruning labor should read the traditional row as his honest number, because an unpruned tight block closes its canopy and taxes every tree inside it.
The bar chart below places the common square spacings on one scale, so the cost of width shows at a glance: every extra five feet of spacing roughly halves the count in the middle of the range.
Trees per kanal for Punjab plots
The table below counts whole trees, rounded down, on plots from 1 to 10 kanal at three common spacings, because most family orchard decisions in Punjab start from a kanal figure on a sale deed rather than an acre figure on a map.
| Plot size | At 15 x 15 ft | At 20 x 20 ft | At 30 x 30 ft |
|---|---|---|---|
| 1 kanal | 24 | 13 | 6 |
| 2 kanal | 48 | 27 | 12 |
| 4 kanal | 96 | 54 | 24 |
| 6 kanal | 145 | 81 | 36 |
| 8 kanal (1 acre) | 193 | 108 | 48 |
| 10 kanal | 242 | 136 | 60 |
Small plots lose a larger share to their edges than big fields do. On a 2 kanal house plot, a boundary row, a water point, and a vegetable strip can take a fifth of the paper area, so run the calculator's usable-area setting at 80 or 85 percent before treating a small-plot count as final.
Worked examples
Example 1, traditional mango. One acre at 30 by 30 feet gives each tree 900 square feet. The division 43,560 by 900 returns 48.4, and the ordering count reads 48 trees per acre.
Example 2, citrus, both layouts. One acre at 20 by 20 feet gives each tree 400 square feet, and 43,560 by 400 returns 108.9, or 108 trees on the square grid. The triangular toggle multiplies by 1.1547 and returns 125.7, or 125 trees, from the same acre and the same spacing.
Example 3, guava on a family plot. Two kanal hold 10,890 square feet. At 15 by 15 feet each tree takes 225 square feet, and 10,890 by 225 returns 48.4, so the family orders 48 guava trees for the plot.
Common mistakes at the nursery counter
Accepting a count without its spacing. A tree count means nothing until the spacing behind it stands on the table. Ask for the spacing first, run it here, and then discuss the count.
Counting the paper area. Deeds describe the plot; trees occupy the plantable part of it. Headlands for turning, the water course, and the farm path all subtract, and the usable-area setting exists for exactly that subtraction.
Ordering the exact count. First-year losses happen on every farm. Growers commonly hold a small replacement allowance, often around 5 to 10 percent, in a nursery corner for gap filling, at a level the local extension office can sanity-check for your crop.
Forgetting the machine. Rows must admit the sprayer and the trolley, not only the tree. A block that fits its trees and starves its machinery pays for the mistake at every spray round for thirty years.
Why I built this calculator
On my family's agricultural land outside Multan, a nursery quoted my uncle a seedling count for one acre of mango, and the number sounded generous enough to hide a second small plot inside it. I paced the field with him, did the spacing math on paper under the trees, and the quote came out roughly a third higher than the land could hold at the spacing the nursery itself had named.
The conversation at the nursery stayed respectful, because paper math argues without raising its voice. The order shrank to the count the field could plant, and the relationship survived the correction. What I took from that afternoon is the rule I now run before any order: a nursery number should fit the field, and when it does not, the field is right and the number is wrong. I check every quote twice now, once on paper at the counter and once standing in the field itself, because the second check is the one that catches the corners the deed forgot. I built this calculator so any farmer's son with a phone can run that same double check standing in the field, in kanal as easily as in acres, before an advance changes hands.
The guides below follow the count into the season's real decisions: boundary timber that earns without eating the field, rows wide enough for the tractor, and the ordering worksheet that turns a count into a bill you can defend.
Guides and field cases
- The nursery quote that did not fit the field
- Mango spacing in Punjab: the wide old way and the high density bargain
- Triangular planting: the honest 15 percent
- Two kanal, one family orchard: a worked planting plan
- Trees on the boundary: timber rows instead of blocks
- Space for the tractor, not just the tree
- Guava at high density: more trees, more pruning, honest trade
- Windbreak math: how many trees a boundary actually needs
- Three fruits, one acre, no chaos: splitting a mixed block
- From count to cash: turning tree numbers into a seedling order
Questions people ask about this page
Does the count include border and boundary trees?
The calculator counts trees inside the planted area at your spacing, and it treats the whole area you enter as plantable. Boundary rows follow the perimeter rather than the area, so plant the borders first, subtract their strip with the usable-area setting, and count the block that remains.
Why does the nursery quote a different number from this calculator?
A nursery quote may assume a tighter spacing, count the boundary rows twice, or round every fraction upward. Ask which spacing the quote uses, run that spacing here, and compare the two counts side by side before you pay an advance.
What spacing suits a mixed orchard?
Give each fruit its own sub-block with its own spacing instead of forcing three fruits into one shared grid. Mango, citrus, and guava each keep their own rows, and a shared path between blocks keeps spraying and picking work simple.
How many extra seedlings should I order for first-year losses?
Many growers add a small replacement allowance on top of the field count, often around 5 to 10 percent, and hold those plants in a nursery corner for gap filling. Confirm the allowance with your local agriculture extension office, because survival rates vary with water, soil, and planting season.
Can the same math serve vegetables and fodder?
Yes. The formula only needs an area and two spacings, so it counts any crop planted in rows, from fodder to vegetables. Enter the row spacing and the plant spacing your crop uses and read the count the same way.
Facts, checked against trusted sources
- One acre equals 43,560 square feet by definition, and every tree count on this page starts from that figure. Source: National Institute of Standards and Technology (NIST), Guide for the Use of the International System of Units (SP 811)
- In Punjab land records, one kanal equals 5,445 square feet, and eight kanal make one acre. Source: Punjab Land Records Authority, land measurement references
