Free area calculator for land — draw a polygon, triangulate with diagonals, enter side lengths in metres, feet, or links, then calculate total plot area or cutting-point offsets. For coordinate-based surveys use the coordinates area calculator; for plot partition steps see our plot division guide.
/land-area/
Click near point 0 to close the polygon
How It Works
1. Draw the polygon
Click on the canvas to add corner points. Click near the first point to close the shape.
2. Triangulate with diagonals
For shapes with 4+ sides, click two non-adjacent points to draw each diagonal until fully triangulated.
3. Enter measurements
Fill in all side and diagonal lengths in your chosen unit, then calculate area or cutting-point offsets.
About this tool
- Draw polygon on canvas
- Gunter and metric links units
- Triangulation area calculation
- Acres and sq.m output
- Runs in browser — no upload
When to use this calculator
Use this tool when you already have side and diagonal lengths from an FMB sketch, chain survey, or field book and need plot area in square metres, acres, or links. It is the browser equivalent of triangulating a polygon on paper — not a GPS map area tool.
Field workflow
Close the polygon on canvas, add diagonals until every part is a triangle, enter measured lengths in one unit system, then calculate. Always re-measure critical sides if the area disagrees with RSR or Adangal beyond office tolerance. For UTM or lat/long vertices use the coordinates area calculator instead.
Limits and official use
Results depend entirely on your input lengths. Technical Surveyor is not a government portal. Verify before mutation, settlement, or court work. Generated numbers are helpers for AP village and mandal survey practice.
Frequently Asked Questions
What is a land area calculator online?
A land area calculator online lets you draw a plot polygon, enter side and diagonal lengths, and compute total area in square metres, acres, gunter links, or metric links — free in your browser for Andhra Pradesh survey work.
How is this different from an area calculator for land on a map?
This tool uses measured lengths from your field book or FMB sketch (triangulation method), not GPS coordinates. For latitude/longitude or UTM points, use our Coordinates Area Calculator.
Can I use gunter links for land area calculation?
Yes. Select Gunter Links or Metric Links as your length unit. Results can be shown in square links, acres, hectares, or square metres.
Is the land area calculator free for India?
Yes. Technical Surveyor's land area calculator is free, requires no login, and processes everything in your browser.
Who is this tool for?
Village surveyors, mandal survey staff, and enthusiasts who need to verify plot areas from chain or FMB measurements.
Corrections & questions
These guides are maintained for practising AP surveyors. If a step is outdated or wrong, tell us — we prioritise field corrections.
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