Acres to Square feet Converter

The converter above is already set to acres and square feet, so you only need to enter your number. The result updates as you type, and nothing is sent anywhere.

1. Type your value in the Value box, for example 1. Decimals and negative numbers are accepted.
2. Check that From shows acres and To shows square feet. Both menus can be changed if you need a different pair.
3. Read the answer in the large result box. The note under it shows the exact factor used for one acre.
4. Press Copy result to put the answer on your clipboard, or Swap units to convert in the opposite direction.
5. Look at In every unit on the right to see the same amount in all the other area units.

One acre is exactly 43,560 square feet, so the formula is square feet = acres x 43,560. Going the other way, one square foot is about 0.0000229568 acres. An acre is 43,560 square feet, or about 4,046.86 square meters. A square foot is exactly 0.09290304 square meters.

Worked examples with the same factor:

• 1 acre: 1 x 43,560 = 43,560 square feet
• 3 acres: 3 x 43,560 = 130,680 square feet
• 10 acres: 10 x 43,560 = 435,600 square feet

An acre is 43,560 square feet, a little smaller than an American football field without its end zones.

To check the converter by hand, take 3 acres and apply the rule once: the result should be 130,680 square feet. If you go back again with the reverse factor 0.0000229568 you land on 3 acres, which confirms that the two directions agree. Rounding the factor to fewer digits for mental math gives a result that is close but not identical, so use the tool when the last digits matter.

These reference values come from the same factor the converter uses, so they match what you see above. Use the table for common amounts, and the converter for anything else.

Area is length times length, so the conversion factor between two area units is the square of the factor between the matching length units. That is why a square meter is about 10.76 square feet even though a meter is only about 3.28 feet. Land units such as the acre and the hectare are older and defined in their own right, then tied to the square meter by agreement.

Use the table as a sanity check rather than a substitute for the converter. A tennis court is roughly 260 square meters, a basketball court about 420, and an American football field about 5,350, so you can sense whether a result is plausible. Remember that measuring a room from wall to wall and from the inside of the walls can differ by several percent.

Land listings, lots and farms are sold in acres, while building plans and zoning rules use square feet.

Lot sizes and floor areas are often stated approximately, and listings differ on whether they include walls, balconies or garages. Treat a converted number as accurate to the same precision as the original, not better.

Related pages: Area Converter for the reverse direction, and the square meters to square feet pages. For other area units use the area converter.

The page keeps no history, so each visit starts again from the defaults, 1 acre. Your numbers are processed by JavaScript in your own browser and are never sent to a server, which makes the converter safe for private figures such as medical, financial or work measurements.