Conversions & Reference
Land Area Calculator
Calculate land area in acres, hectares, and square feet from GPS coordinates, dimensions, or known measurements. Convert between all land measurement units.
1 Acre
43,560 sq ft
1 Acre
4,047 sq meters
1 Section
640 acres (1 sq mile)
1 Hectare
10,000 sq meters
Input
Fill in the fields below, then click Calculate.
Length in feet, or total area in selected units
Leave blank if entering a known area
No results yet
Fill in the fields and click Calculate to see results.
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How to Use This Calculator
This land measurement calculator makes it simple to determine property size. Choose how you want to input your measurement — if you have length and width in feet, select "Length × Width" and enter both dimensions. If you already know the area in square feet, square meters, or hectares, select that option and enter the value. The calculator converts between all common land measurement units instantly.
Why This Matters
Accurate land size calculations affect every financial decision in farming and real estate — from property taxes and cash rent to seed purchases, fertilizer budgets, and crop insurance coverage. Using the wrong property area figure cascades into errors across your entire operation. This calculator ensures accurate conversions between all measurement systems used in US and international agriculture.
Methodology
For dimensions: Area (sq ft) = Length × Width. Conversion factors: 1 acre = 43,560 sq ft = 4,047 m² = 0.4047 ha. 1 hectare = 10,000 m² = 2.471 acres = 107,639 sq ft. These are exact conversion factors used by the USDA, NRCS, and international land registries.
Common Mistakes to Avoid
- Measuring the perimeter instead of the area — area requires length × width, not the sum of all sides.
- Forgetting that not all land in a parcel is usable — always distinguish gross acres from net tillable acres.
- Mixing up square feet and linear feet — 100 linear feet of road is not 100 square feet of area.
- Using approximate conversions instead of exact factors — small rounding errors compound on large parcels.
Tips & Best Practices
- A standard city lot is typically 0.1-0.25 acres (50×100 ft to 100×100 ft).
- One section of land (1 square mile) equals 640 acres — a common reference in the western US.
- For farm fields, use FSA maps or GPS boundaries for the most accurate acreage measurements.
- Subtract non-tillable areas (waterways, roads, tree lines) to get net farmable acres.
- When converting international measurements, remember: 1 hectare = 2.471 acres.