Irregular Plot Area Calculator (तिरछे प्लॉट का क्षेत्रफल)

Calculate area of 4-side irregular plots, triangular land, and L-shape parcels with surveyor triangulation.

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2D Plot Shape Diagram
Side A (Front): 50 ftSide B: 60Side C (Back): 45 ftSide D: 65Diag: 75
Method: Exact Surveyor Triangulation (Heron's Formula on 2 triangles)
Total Area (वर्ग फीट)
2,949.42
Square Feet
Plot Area (वर्ग गज / Gaj)
327.71
Square Yards (Gaj)
Area in Acre (एकड़)
0.0677
Acre (43,560 sq ft)
Total Perimeter (घेरा)
220
Boundary ft (Fencing)
Square Meters
274.01 sq m
Pucca Bigha (UP/Bihar)
0.108 Bigha
Guntha (MH/GJ/KA)
2.71 Guntha
Cent / Dismil
6.77 Cent

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About Irregular Plot Area Calculator (तिरछे प्लॉट का क्षेत्रफल)

Calculate the exact area of non-rectangular, irregular 4-sided plots, triangular land, and L-shaped plots. Uses true surveyor triangulation via diagonal measurement and Heron’s formula to deliver 100% mathematically accurate property area in Square Feet, Gaj (Square Yards), Square Meters, Acres, Bigha, Guntha, and Cents.

How to use Irregular Plot Area Calculator (तिरछे प्लॉट का क्षेत्रफल)

  1. Choose your plot shape: 4-Side Irregular, 3-Side Triangle, L-Shape, or Trapezoid.
  2. Enter the boundary side lengths (Front, Right, Back, Left).
  3. Enter the diagonal length for 100% exact surveyor triangulation.
  4. View the total plot area in Square Feet, Gaj (Sq Yards), Square Meters, Acres, Bigha, and Guntha alongside a 2D plot preview.

Key features

  • Accurate Heron’s Triangulation method via diagonal measurement
  • Supports 4-Side Irregular, 3-Side Triangular, L-Shape, and Trapezoidal plots
  • Input in Feet, Meters, or Yards (Gaj)
  • Simultaneous area calculation in Sq Ft, Gaj, Sq M, Acres, Bigha, Guntha, and Cents
  • Interactive 2D visual shape rendering
  • Calculates total boundary perimeter for fencing estimates

Frequently asked questions

Why is diagonal measurement necessary for 4-side irregular plots?
A 4-sided quadrilateral is not a rigid shape; four side lengths alone can form infinite different quadrilaterals with different areas. Measuring just one diagonal splits the quadrilateral into two rigid triangles, allowing exact mathematical calculation via Heron’s formula without distortion.
What is the average formula and why is it inaccurate?
The common formula (Average of opposite sides = ((A+C)/2) * ((B+D)/2)) assumes the plot corners are nearly 90 degrees. For skewed or sharply angled plots, the average formula overestimates the actual area. Diagonal triangulation is the professional standard used by government revenue patwaris and surveyors.
How do I measure the diagonal of a land plot in the field?
Take a measuring tape and measure the straight-line distance from the front-left corner across to the back-right corner of the plot.