Acreage Calculator
Calculate land acreage from dimensions in feet, meters, or yards. Supports rectangular, triangular, and circular shapes with step-by-step calculations, visual diagrams, and comprehensive unit conversions.
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About Acreage Calculator
Welcome to the Acreage Calculator, a comprehensive land area tool that calculates acreage from your property dimensions. Whether you have a rectangular lot, a triangular parcel, or a circular plot, this calculator provides instant conversions to acres, hectares, square feet, and many other units with step-by-step calculations and visual diagrams.
What is an Acre?
An acre is a unit of land area used in the imperial and U.S. customary measurement systems. It is the most common unit for measuring land in the United States, United Kingdom, and several other countries. The word "acre" comes from Old English meaning "open field."
Key Acre Facts
- 1 acre = 43,560 square feet (the most important conversion)
- 1 acre = 4,840 square yards
- 1 acre = 160 perches (square rods)
- 1 acre = 10 square chains
- 1 acre = 4 roods
- 1 acre = 0.404686 hectares
- 1 acre = 1/640 square mile (640 acres = 1 square mile)
Standard Acre Dimensions
A traditional acre is defined as a chain by a furlong:
A perfect square acre would measure approximately 208.71 feet on each side (since the square root of 43,560 is about 208.71).
How to Calculate Acreage
Rectangular or Square Plots
For rectangular land, multiply length by width to get square feet, then divide by 43,560:
Triangular Plots
For triangular parcels, use half the base times height:
Circular Plots
For circular land areas, use pi times radius squared:
Common Lot Sizes in Acres
| Lot Size | Square Feet | Acres | Typical Use |
|---|---|---|---|
| Small city lot | 5,000 sq ft | 0.115 acres | Urban residential |
| Standard city lot | 7,500 sq ft | 0.172 acres | Urban residential |
| 1/4 acre | 10,890 sq ft | 0.25 acres | Suburban home |
| 1/3 acre | 14,520 sq ft | 0.33 acres | Suburban home |
| 1/2 acre | 21,780 sq ft | 0.5 acres | Large suburban lot |
| Full acre | 43,560 sq ft | 1.0 acre | Estate/rural home |
| Football field | ~57,600 sq ft | 1.32 acres | (including end zones) |
Acres vs Hectares
While acres are standard in the US and UK, most of the world uses hectares (metric system):
- 1 hectare = 2.47105 acres
- 1 acre = 0.404686 hectares
- 1 hectare = 10,000 square meters
- 1 hectare = 100 meters × 100 meters
Historical Land Units
Our calculator also provides conversions to historical land measurement units:
- Perches (Square Rods): 1 acre = 160 perches. A perch equals 16.5 ft × 16.5 ft (272.25 sq ft).
- Square Chains: 1 acre = 10 square chains. A chain is 66 feet (4 rods), and a square chain is 4,356 sq ft.
- Roods: 1 acre = 4 roods. A rood is a quarter of an acre (10,890 sq ft).
Tips for Measuring Land
- Use accurate measurements: Measure length and width at ground level, or use property survey documents.
- Account for irregular shapes: Divide complex plots into simple shapes, calculate each separately, and add them together.
- GPS tools: For large or irregular properties, consider using GPS mapping tools or professional surveys.
- Check official records: Property deeds and tax records often list official acreage.
Frequently Asked Questions
How many acres is my lot?
To calculate acres, multiply the length by width (for rectangular lots) to get square feet, then divide by 43,560. For example, a 200 ft × 200 ft lot is 40,000 sq ft ÷ 43,560 = 0.918 acres. Our calculator handles rectangular, triangular, and circular plots with various input units.
What is an acre?
An acre is a unit of land area equal to 43,560 square feet, 4,840 square yards, or approximately 0.4047 hectares. Originally defined as the area that could be plowed in one day with a yoke of oxen, one acre equals 1/640 of a square mile. A standard acre is 66 feet × 660 feet (one chain by one furlong).
How many square feet in an acre?
One acre equals exactly 43,560 square feet. This is equivalent to 4,840 square yards, 160 perches (square rods), 10 square chains, 4 roods, or approximately 4,047 square meters (0.4047 hectares). A perfect square acre would measure about 208.71 feet on each side.
How do I convert acres to hectares?
To convert acres to hectares, multiply the acreage by 0.404686. For example, 5 acres × 0.404686 = 2.023 hectares. Conversely, to convert hectares to acres, multiply by 2.47105. One hectare equals 10,000 square meters or approximately 2.47 acres.
What are common lot sizes in acres?
Common residential lot sizes include: 1/4 acre (10,890 sq ft, typical suburban lot), 1/3 acre (14,520 sq ft), 1/2 acre (21,780 sq ft), and 1 acre (43,560 sq ft). A standard city lot is often around 5,000-7,000 sq ft (0.11-0.16 acres), while rural properties typically range from 1-10+ acres.
How do I calculate acreage for irregular shaped land?
For irregular plots, divide the land into multiple regular shapes (rectangles, triangles), calculate each section's area separately, then add them together. Our calculator supports rectangles, triangles, and circles. For complex shapes, consider using a land surveyor or GPS mapping tools.
Additional Resources
Reference this content, page, or tool as:
"Acreage Calculator" at https://MiniWebtool.com/acreage-calculator/ from MiniWebtool, https://MiniWebtool.com/
by miniwebtool team. Updated: Jan 29, 2026
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- Acres to Perches Converter
- Acres to Square Feet Converter
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- Acres to Square Miles Converter
- Acres to Square Yards Converter
- Hectares to Acres Converter
- Perches to Acres Converter
- Square Feet to Acres Converter
- Square Meters to Acres Converter
- Square Miles to Acres Converter
- Square Yards to Acres Converter