How this calculation works
Remove a common rectangle along the full entered length, then split the remaining rectangle into equal strips along x or y. Return local-coordinate bounds and dimensions rather than treating an area fraction as a surveyed boundary.
Common area = L × reserve; each strip area = L × (W−reserve) / countA worked example
A 100 × 60 m rectangle with a 6 m wide common strip has 600 m² reserved and 5,400 m² remaining. Three equal x-strips each have 1,800 m², with x bounds 0–100/3, 100/3–200/3 and 200/3–100, and y bounds 6–60.
Good to know
Rectangular geometry only, with an explicitly entered reservation. Equal area does not imply equal value, legal shares, legal partition, adequate access, frontage or compliant road width. The table shows at most 50 strips. Local coordinates and recurring fractions are rounded for display.
Reference: NIST: exact international-foot and acre factors (opens in a new tab) ↗
Check the land-unit definitions and sources
The standard factors use the international foot and an acre of 43,560 sq ft. Cent means 1/100 acre; gunta means 1/40 acre; the selected Chennai ground means 2,400 sq ft.
The Assam report defines bigha as 14,400 sq ft, katha as 2,880 sq ft and lecha as 144 sq ft. The cited West Bengal court order mentions a 720-sq-ft katha convention. These are explicit presets, not an automatic definition for every record or every place using the same name. Match your record to the stated convention, or use its verified custom factor.
- NIST: exact international-foot and acre factors (opens in a new tab) ↗
- API Setu MDDS: acre/cent and acre/gunta relationships (opens in a new tab) ↗
- Greater Chennai Corporation: one ground is 2,400 sq ft (opens in a new tab) ↗
- Government of Assam AIRBMP framework: section 7.2, page 28 (bigha, katha and lecha) (opens in a new tab) ↗
- Supreme Court order, 7 May 2025: paragraph 2, page 2 (West Bengal katha) (opens in a new tab) ↗
The acre relationships are converted using exact base factors. Rounded or unrelated regional values in a reference table are not substituted for these definitions.
Set aside the common geometry before dividing
The supplied 100 × 60 m rectangle has area 6,000 m². An entered strip 6 m wide running the full 100 m length reserves 600 m². The remaining rectangle is 100 × 54 m, with 5,400 m² to divide in this model.
Three equal cuts along x create rectangles 100/3 m long and 54 m wide. Each area is 1,800 m². The common rectangle is not silently distributed into those three physical strip areas; its ownership or legal treatment is outside this geometry.
Land share area answers the arithmetic fraction-of-a-whole question. This tool adds explicit simple rectangular bounds after the entered reservation. It still does not partition an arbitrary polygon or establish anyone’s entitlement.
Equal area does not determine frontage or value
Choosing cuts along y instead gives different rectangles with the same 1,800 m² area. Their orientation, contact with the reserved strip and physical frontage differ. The tool does not infer that every such layout has adequate access.
Local x runs along the entered length and y along the entered width. Table bounds use those axes rather than compass directions. If a boundary involves a recurring fraction such as 100/3, its displayed decimal is rounded; that printed value is not a certified stake-out coordinate.
A measured plot area can confirm a known shape’s area before this simplified division. A legal subdivision, shared access arrangement, equal-value allocation or inheritance division requires information that the entered rectangle and count do not supply.
A few questions, answered
Does the reserved strip represent an approved road?
No. It is a rectangle you supplied for the scenario. Its width, suitability and legal status are not assessed.
Can I split a non-rectangular survey polygon?
Not with this model. It explicitly divides the stated remaining rectangle into strips.
Why show at most 50 strip bounds?
To keep the result usable. The full equal-area count and formulas still describe the chosen number of strips.