How do I convert m² to acre?

Use the formula shown above or enter a value to see m² converted to acre instantly.

What is the formula for m² to acre?

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

When should I use m² vs acre?

m² and acre 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 m² to acre

Use the live converter below to translate between Square Meter (m²) and Acre (acre). 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

m² → acre

Square Meter

m²

Acre

0.0002

acre

Rounded result (4 decimals max)

Formula

1 m² = 0.0002 acre

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 acre to m².

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m² to acre quick table

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

Square Meter (m²)	Acre (acre)
0.25 m²	0.0001 acre
0.5 m²	0.0001 acre
1 m²	0.0002 acre
2 m²	0.0005 acre
5 m²	0.0012 acre
10 m²	0.0025 acre
25 m²	0.0062 acre
100 m²	0.0247 acre

acre back to m²

Keep the reciprocal handy when double-checking calculations or undoing a conversion.

Acre (acre)	Square Meter (m²)
0.25 acre	1,011.7141 m²
0.5 acre	2,023.4282 m²
1 acre	4,046.8564 m²
2 acre	8,093.7128 m²
5 acre	20,234.2821 m²
10 acre	40,468.5642 m²
25 acre	101,171.4106 m²
100 acre	404,685.6422 m²