Land Area Calculator
Calculate land or plot area in square metres, hectares, and acres. Supports rectangular plots and irregular four-sided shapes.
Quick Calculator Get a fast estimate
m
m
Area in m²
600 m²
Hectares
0,06 ha
Acres
0,1483 acres
Perimeter
100 m
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How to Use This Calculator
For a rectangular plot, enter length and width. For triangular or irregular plots, use the Extended Calculator below. For surveyor-grade boundary coordinate input with FAR and coverage calculations, use the Professional Calculator.
Area Formulas
Rectangle: Area = Length × Width
Triangle: Area = 0.5 × Base × Height
Irregular polygon (Shoelace): Area = |Σ(xᵢ × yᵢ₊₁ − xᵢ₊₁ × yᵢ)| ÷ 2
1 hectare = 10,000 m² | 1 acre = 4,046.86 m²
Need more detail?
Extended Calculator More options, charts, and scenario comparison
m
m
Plot Area
1500.00 m²
Area in Hectares
0.1500 ha
Perimeter
160.00 m
Est. Land Value (R850/m²)
R 1 275 000
SA Land Size Reference
| Plot Type | Typical Size | Area (m²) |
|---|---|---|
| Small urban erf | 10m × 20m | 200 m² |
| Standard suburban erf | 20m × 30m | 600 m² |
| Large residential erf | 30m × 50m | 1 500 m² |
| Smallholding (1 ha) | 100m × 100m | 10 000 m² |
| Mini farm (5 ha) | 224m × 224m | 50 000 m² |
| Farm (100 ha) | 1 000m × 1 000m | 1 000 000 m² |
Google Maps Measurement Tip
How to measure your plot on Google Maps:
- Open Google Maps and navigate to your property
- Right-click on the plot corner → "Measure distance"
- Click around the plot perimeter to trace the boundary
- Google Maps shows total area in m² and perimeter distance
- Use the coordinates for surveyor-grade measurements
For official purposes, always use a registered land surveyor. The Deeds Office holds the official SG (surveyor-general) diagram for each erf.
Example Calculation
Typical Suburban Stand
Stand: 30m × 25m. Area = 750 m² = 0.075 ha = 0.185 acres.
This is a typical suburban stand in Johannesburg or Pretoria suburbs.
SA Land Size Reference
| Property Type | Typical Size | Area |
|---|---|---|
| Small urban erf | 10m × 20m | 200 m² |
| Standard suburban erf | 20m × 30m | 600 m² |
| Large residential erf | 30m × 50m | 1,500 m² |
| Smallholding (1 ha) | 100m × 100m | 10,000 m² |
| Mini farm (5 ha) | 224m × 224m | 50,000 m² |
Need full precision?
Professional Calculator Complete parameters, sensitivity analysis, and detailed breakdown
Boundary Coordinates (Surveyor Input)
Enter X/Y coordinates from your surveyor's diagram (in metres). The Shoelace formula calculates exact area.
| Point | X (m East) | Y (m North) | |
|---|---|---|---|
Gross Plot Area (Shoelace)
1500.00 m²
Area (hectares)
0.1500 ha
Perimeter
160.00 m
Estimated Land Value
R 1 275 000
Servitude & Net Area
m²
R/m²
| Boundary | Length |
|---|---|
| A → B | 50.00 m |
| B → C | 30.00 m |
| C → D | 50.00 m |
| D → A | 30.00 m |
| Gross Area | 1500.00 m² |
| Less: Servitude | − 0.00 m² |
| Net Developable Area | 1500.00 m² |
FAR & Coverage Calculation
%
m²
| Metric | Achieved | Allowed | Status |
|---|---|---|---|
| Coverage | 0.0% | 50% | Compliant |
| FAR (Floor Area Ratio) | 0.00 | 1 | Compliant |
| Total Floor Area | 0.00 m² | ||
| Max Footprint (by coverage) | 750.00 m² | ||
| Max Floor Area (by FAR) | 1500.00 m² | ||
Frequently Asked Questions
Typical suburban stands range from 500–1,000 m² in established suburbs. Townhouse complexes may have individual stands of 200–400 m². Lifestyle estates range from 1,000 m² to several hectares. Agricultural stands can be 5–100+ hectares.
For informal measurements, use a long measuring tape and the Shoelace formula in our Professional Calculator. For legal and property transaction purposes, always use a licensed land surveyor. The Deeds Office records the official surveyed area.
FAR (Floor Area Ratio) is the total floor area of all buildings divided by the erf area. Municipal zoning specifies maximum FAR for each zone. A FAR of 1.0 means you can build a total floor area equal to the erf size. Exceeding the FAR requires special consent or rezoning.
The title deed references the surveyor-general diagram which gives the official registered area. This is the most accurate measure. Physical measurements may differ slightly from the registered area due to survey tolerances or shifted boundary pegs.