How do I convert acre to ft²?

Use the formula shown above or enter a value to see acre converted to ft² instantly.

What is the formula for acre to ft²?

The converter calculates ft² by applying the category-specific conversion factor for Area.

When should I use acre vs ft²?

acre and ft² are both part of the Area category; pick the unit that matches your measurement context (e.g., scale, region, or industry standard).

Area Converter & Surface Reference

Convert acre to ft²

Use the live converter below to translate between Acre (acre) and Square Foot (ft²). Scroll further for quick examples, formula tips, and related units.

Formula insight: Most unit conversions use a simple multiplication or division by a conversion factor. The calculator shows the exact formula used.

Convert

acre → ft²

Acre

acre

Square Foot

43,560

ft²

Rounded result (4 decimals max)

Formula

1 acre = 43,560 ft²

Conversion sourcesTap or click to view references

The International System of Units (SI) — NIST Special Publication 330
National Institute of Standards and Technology (NIST). The SI Brochure (SP 330) is the definitive English edition of the BIPM SI tables. NIST’s edition lists the official constants and conversion factors tying inch-pound units to SI, which SwapUnits applies for length, mass, temperature, pressure, volume, and related conversions. See /standards/nist-si-tenfold for the complete decimal multiple/submultiple table. View source · View SI table

Results update as you type. Swap the direction to convert back from ft² to acre.

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acre to ft² quick table

Multiply any row by the same factor to scale results. Use the converter above to enter exact values with your own units.

Acre (acre)	Square Foot (ft²)
0.25 acre	10,890 ft²
0.5 acre	21,780 ft²
1 acre	43,560 ft²
2 acre	87,120 ft²
5 acre	217,800 ft²
10 acre	435,600 ft²
25 acre	1,089,000 ft²
100 acre	4,356,000 ft²