Acreage Calculator: Find Acres from Feet or Meters
This acreage calculator finds land area from rectangle or triangle dimensions, or from a known square-foot or square-meter total, and shows acres, hectares, square feet, and square meters side by side.
How to use
- Choose a rectangle, a triangle, or a known area.
- For a shape, enter both dimensions and choose feet, yards, or meters. A triangle uses base and height.
- For a known area, enter square feet or square meters.
- Read acres, hectares, square feet, and square meters together. One acre is 43,560 square feet.
Formula
A rectangle is length times width. A triangle is base times height divided by 2. Yards convert with 1 yard = 3 feet, so square yards times 9 equals square feet. Meters use 1 acre = 4,046.8564224 square meters. Acres equal square feet divided by 43,560. Hectares equal square meters divided by 10,000.
Example. A rectangle 66 feet by 660 feet is 43,560 square feet. That is 1 acre, 0.404686 hectares, and 4,046.8564224 square meters.
Example. A triangle with a 120-foot base and a 363-foot height is 21,780 square feet, or 0.5 acres.
Example. 22 yards by 220 yards is the same 1 acre, because each yard is 3 feet.
Not a survey
This adds up a rectangle, a triangle, or a total you already know. Split an irregular lot into those shapes and add the pieces. Legal boundaries need a licensed survey.
Frequently asked questions
How many square feet are in an acre?
One acre is 43,560 square feet.
How do I calculate acreage?
Multiply length by width in feet to get square feet, then divide by 43,560.
How big is an acre in meters?
About 4,046.86 square meters. One hectare is about 2.471 acres.
Can I measure an irregular lot?
Split it into rectangles and triangles, work out each piece, and add them up.
Is this a survey?
No. Use a licensed survey for legal boundaries.
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