How this acreage calculator works
Acreage is simply land area expressed in acres. An acre is a fixed area — 43,560 square feet — so converting any measured area into acres is one short step: divide the area in square feet by 43,560.
For a rectangular lot, the area is length × width. For a triangular parcel it is ½ × base × height. If you already know the area in square feet or square meters, you can enter that directly. When you measure in meters or yards, the calculator converts your dimensions to feet first (1 yard = 3 feet, 1 meter ≈ 3.28084 feet), works out the square footage, then divides by 43,560 to get acres. It also reports the same area in square meters and hectares.
Reference: 1 acre = 43,560 sq ft = 4,046.86 m² = 0.404686 hectares. Common lots: 43,560 sq ft = 1 acre, 21,780 sq ft = ½ acre, 10,890 sq ft = ¼ acre, and a 100 ft × 100 ft lot (10,000 sq ft) ≈ 0.23 acres.
Frequently asked questions
- How many square feet are in an acre?
- One acre is exactly 43,560 square feet — the same as a square roughly 208.71 feet on each side, or about 4,046.86 square meters (0.404686 hectares).
- How do I calculate acreage?
- Find the area in square feet — for a rectangular lot that is length × width — then divide by 43,560. For example, 200 ft × 300 ft = 60,000 sq ft ÷ 43,560 ≈ 1.38 acres.
- How big is an acre?
- An acre is 43,560 square feet, about 4,046.86 square meters or 0.405 hectares — roughly 90% of an American football field including the end zones, or a square about 208.71 feet per side.
- How do I convert square feet to acres?
- Divide the number of square feet by 43,560. For example, 87,120 sq ft ÷ 43,560 = 2 acres. To go the other way, multiply acres by 43,560 to get square feet.
- What is a hectare?
- A hectare is a metric unit of area equal to 10,000 square meters, or about 2.471 acres. One acre is roughly 0.405 hectares. Hectares are commonly used for land area outside the United States.
- How many acres is my lot?
- Measure the lot, compute its area, and divide the square footage by 43,560. Enter the length and width above (or a known square-footage value) and this calculator returns the acreage along with square meters and hectares.