Acre (ac)
The acre is used for land in the United States, the United Kingdom, and other countries using imperial measures.
History: the acre comes from medieval land measurement and remains common in countries using imperial units.
Quickly convert acres to ares without lookup tables or manual math.
This page is focused on converting acres to ares. Type a number into the first field and the result appears immediately in the second field.
Example: 1 ac = 40.468564224 a. Conversion formula: result = value × 4046.8564224 / 100.
Use this converter for everyday calculations, study notes, engineering checks, and quick value verification without installing a separate app.
The acre is used for land in the United States, the United Kingdom, and other countries using imperial measures.
History: the acre comes from medieval land measurement and remains common in countries using imperial units.
The are equals 100 square meters and is a metric land unit close to the everyday sotka.
History: the are was introduced in the French metric system as a land measure of 100 square meters.
Enter a value in the Acre field. The converter applies the formula "result = value × 4046.8564224 / 100" and immediately shows the result in ares.
1 ac = 40.468564224 a.
Yes. Use the swap button or choose the reverse pair from the full conversion list.