Free Land Measurement Toolkit
Convert land-area units, calculate a rectangular plot, learn how to measure irregular fields, and download a practical reference guide. Use these tools for estimates and planning.
Choose a tool
Land area unit converter
Enter a known area. The conversion does not verify a land boundary.
Rectangular plot calculator
Use the same unit for both dimensions. The result is an estimate based on your inputs.
Quick conversion reference
| Unit | Equivalent |
|---|---|
| 1 international acre | 4,046.8564224 m² |
| 1 acre | 43,560 ft² |
| 1 hectare | 10,000 m² |
| 1 hectare | about 2.47105 acres |
| 1 m² | about 10.7639 ft² |
| 1 ft² | about 0.092903 m² |
Regional units such as bigha, biswa, kanal, marla and guntha vary by state and locality. Always verify the local standard before using a conversion for a transaction.
How to measure land
For a rectangular plot, area = length × width. Irregular fields need boundary points or a polygon method; approximating them as rectangles can produce misleading results.
GPS accuracy depends on the device, satellite reception, obstacles, map data and the points selected. Review the boundary before relying on an estimate.
Read the complete practical guide →Measure an irregular field
When dimensions alone are not enough, use a map-based workflow to trace the boundary and inspect the calculated area.
Field Measure Pro includes tools such as GPS Walk, Draw on Map, GPS + Adjust, and saved field measurements.
Open Field Measure ProFrequently asked questions
How do I calculate land area?
For a rectangle, multiply length by width after converting both dimensions to the same unit. For irregular shapes, use a suitable polygon or survey method.
How many square metres are in an acre?
One international acre equals 4,046.8564224 square metres.
Can I use phone GPS to measure a field?
A phone GPS or map-based tool can estimate area, but accuracy varies. Do not treat the result as a legal survey.
Is one bigha the same size everywhere?
No. Bigha and several other traditional land units vary by region. Confirm the local definition before converting or using the figure in a property transaction.
Want to save and adjust your field boundary?
Open the app to explore map-based measurement and saved field workflows.
Launch Field Measure Pro