Calculate lot area in square feet from dimensions or convert between acres, hectares, square meters, and more. Supports rectangle, circle, and triangle lots.
Knowing your lot size in square feet is fundamental for real estate, landscaping, zoning compliance, and construction planning. Whether you are buying property, estimating lawn coverage, or filing a building permit, you need an accurate area figure — and often need it expressed in multiple units and report formats across agencies and contractors.
This lot size calculator computes the area from your dimensions (width × length for rectangles, radius for circles, or base × height for triangles) and instantly converts to square feet, square meters, square yards, acres, hectares, cents, bigha, and marla. You can also enter a known area directly if your lot has an irregular shape.
Preset buttons let you quickly load common residential lot sizes such as 50×100, ¼ acre, and 1 acre. The reference table compares typical lot sizes across US, metric, and South Asian units. A visual acre-scale bar shows where your lot falls relative to common benchmarks.
Real-estate listings, tax records, and zoning codes may express lot sizes in different units depending on the country and region. US listings use square feet or acres, European listings use square meters or hectares, and South Asian listings may use cents, bigha, or marla. This calculator bridges all those systems in one step.
Beyond unit conversion, the shape calculator helps you compute area from raw dimensions — useful when you only have a tape-measure or property boundary survey without a pre-calculated total.
Rectangle: area = width × length | Circle: area = π × radius² | Triangle: area = ½ × base × height | Unit conversions: 1 acre = 43,560 sq ft; 1 hectare = 107,639 sq ft; 1 sq m = 10.7639 sq ft.
Result: 5,000 sq ft (0.1148 acres)
50 ft × 100 ft = 5,000 square feet. That equals about 464.5 sq m, 555.6 sq yd, 0.1148 acres, or 0.0465 hectares.
In the United States, land is primarily measured in acres and square feet. One acre — 43,560 sq ft — descends from the area a yoke of oxen could plow in a day. Most suburban lots range from 5,000 to 20,000 sq ft. In metric countries, hectares (10,000 sq m) serve as the primary large-area unit, with square meters for individual parcels.
South Asian real estate uses a bewildering array of traditional units. In India, a **cent** (1/100 acre) dominates Kerala and Tamil Nadu, while **bigha** sizes vary dramatically — from 1,600 sq m in West Bengal to over 2,500 sq m in Rajasthan. Pakistan and parts of North India use **marla** (272.25 sq ft) and **kanal** (20 marla). Always confirm which local standard applies before transacting.
When evaluating a property listing, knowing the exact lot size lets you calculate floor-area ratio (FAR), coverage ratio, setback compliance, and landscaping requirements. Comparing lots across listings is only meaningful when all figures are in the same unit. This calculator standardizes everything so you can make apples-to-apples comparisons.
One acre equals exactly 43,560 square feet. A standard US residential lot is typically 0.1 to 0.5 acres.
In the US, a common suburban lot is 7,000 to 10,000 sq ft (about ¼ acre). Urban lots may be 3,000-5,000 sq ft, while rural lots can be 1+ acres.
Multiply square meters by 10.7639. For example, 100 sq m × 10.7639 = 1,076.39 sq ft.
A cent is 1/100 of an acre (435.6 sq ft). It is widely used in Kerala, Tamil Nadu, and other South Indian states for land transactions.
A bigha is a traditional South Asian land unit that varies by region — roughly 0.33 to 0.62 acres depending on the state. This calculator uses the common 0.62-acre approximation.
Select "Direct area entry" and type in the known area from your survey plat. For complex polygons, divide into triangles, calculate each, and sum.