What Is the Acreage Calculator?
The Acreage Calculator converts the dimensions of a rectangular piece of land into acres. An acre is a unit of land area equal to exactly 43,560 square feet (roughly the size of a standard American football field minus the end zones). By entering the length and width of a plot in feet, you instantly learn how many acres it covers — useful for buying property, planning a garden, estimating fencing or seed, and reading real-estate listings.
How to Use It
Measure the two perpendicular sides of your rectangular plot in feet. Enter the longer side as the length and the shorter side as the width (the order does not change the result). Click calculate and the tool returns the total area in both acres and square feet. For irregular lots, break the land into rectangles, calculate each, and add the acreages together.
The Formula Explained
The calculation has two simple steps. First, multiply length by width to get the area in square feet. Second, divide by 43,560 because one acre contains 43,560 square feet:
$$\text{acres} = \dfrac{\text{length} \times \text{width}}{43560}$$
Worked Example
Suppose a lot measures 1,000 feet long and 500 feet wide. The area is \(1{,}000 \times 500 = 500{,}000\) square feet. Dividing by 43,560 gives $$500{,}000 \div 43560 \approx 11.4784 \text{ acres}$$ So this plot is just under 11½ acres.
Land Area Unit Conversions
One acre is a fixed unit of land area equal to exactly 43,560 square feet. The following table shows how a single acre converts into other common units of area, along with the linear feet-to-meters factor used when converting plot dimensions.
| 1 acre equals | Value | Notes |
|---|---|---|
| Square feet (ft²) | 43,560 | Exact definition |
| Square yards (yd²) | 4,840 | Since 1 yd² = 9 ft² |
| Square meters (m²) | 4,046.86 | Approximate |
| Hectares (ha) | 0.4047 | 1 ha = 10,000 m² |
| Square miles (mi²) | 1/640 ≈ 0.0015625 | 640 acres = 1 mi² |
| Feet to meters (linear) | 1 ft = 0.3048 m | 1 m = 3.28084 ft |
To convert a plot's dimensions from feet to meters before computing area, multiply each side by 0.3048. To go from a measurement in meters back to feet, multiply by 3.28084.
FAQ
How many square feet are in an acre? Exactly 43,560 square feet.
What if my land is not rectangular? Split it into rectangles (and triangles), compute each area, and total the results before dividing by 43,560.
Can I use meters? This tool expects feet. To convert, multiply meters by 3.28084 to get feet first, or note that 1 acre ≈ 4,046.86 square meters.
