Square Meters to Acres (m² → ac) — Free Online Converter

m² → ac Reference Table

m²	ac
0.001 m²	2.471053815e-7 ac
0.002 m²	4.942107629e-7 ac
0.003 m²	7.413161444e-7 ac
0.004 m²	9.884215259e-7 ac
0.005 m²	0.000001235526907 ac
0.006 m²	0.000001482632289 ac
0.007 m²	0.00000172973767 ac
0.008 m²	0.000001976843052 ac
0.009 m²	0.000002223948433 ac
0.01 m²	0.000002471053815 ac
0.02 m²	0.000004942107629 ac
0.03 m²	0.000007413161444 ac
0.04 m²	0.000009884215259 ac
0.05 m²	0.00001235526907 ac
0.06 m²	0.00001482632289 ac
0.07 m²	0.0000172973767 ac
0.08 m²	0.00001976843052 ac
0.09 m²	0.00002223948433 ac
0.1 m²	0.00002471053815 ac
0.2 m²	0.00004942107629 ac
0.3 m²	0.00007413161444 ac
0.4 m²	0.00009884215259 ac
0.5 m²	0.0001235526907 ac
0.6 m²	0.0001482632289 ac
0.7 m²	0.000172973767 ac
0.8 m²	0.0001976843052 ac
0.9 m²	0.0002223948433 ac
1 m²	0.0002471053815 ac
1.5 m²	0.0003706580722 ac
2 m²	0.0004942107629 ac
2.5 m²	0.0006177634537 ac
3 m²	0.0007413161444 ac
3.5 m²	0.0008648688351 ac
4 m²	0.0009884215259 ac
4.5 m²	0.001111974217 ac
5 m²	0.001235526907 ac
5.5 m²	0.001359079598 ac
6 m²	0.001482632289 ac
6.5 m²	0.00160618498 ac
7 m²	0.00172973767 ac
7.5 m²	0.001853290361 ac
8 m²	0.001976843052 ac
8.5 m²	0.002100395742 ac
9 m²	0.002223948433 ac
9.5 m²	0.002347501124 ac
10 m²	0.002471053815 ac
11 m²	0.002718159196 ac
12 m²	0.002965264578 ac
13 m²	0.003212369959 ac
14 m²	0.003459475341 ac
15 m²	0.003706580722 ac
16 m²	0.003953686103 ac
17 m²	0.004200791485 ac
18 m²	0.004447896866 ac
19 m²	0.004695002248 ac
20 m²	0.004942107629 ac
25 m²	0.006177634537 ac
30 m²	0.007413161444 ac
35 m²	0.008648688351 ac
40 m²	0.009884215259 ac
45 m²	0.01111974217 ac
50 m²	0.01235526907 ac
55 m²	0.01359079598 ac
60 m²	0.01482632289 ac
65 m²	0.0160618498 ac
70 m²	0.0172973767 ac
75 m²	0.01853290361 ac
80 m²	0.01976843052 ac
85 m²	0.02100395742 ac
90 m²	0.02223948433 ac
95 m²	0.02347501124 ac
100 m²	0.02471053815 ac
120 m²	0.02965264578 ac
125 m²	0.03088817268 ac
130 m²	0.03212369959 ac
140 m²	0.03459475341 ac
150 m²	0.03706580722 ac
160 m²	0.03953686103 ac
175 m²	0.04324344176 ac
180 m²	0.04447896866 ac
200 m²	0.04942107629 ac
225 m²	0.05559871083 ac
250 m²	0.06177634537 ac
275 m²	0.0679539799 ac
300 m²	0.07413161444 ac
350 m²	0.08648688351 ac
400 m²	0.09884215259 ac
450 m²	0.1111974217 ac
500 m²	0.1235526907 ac
600 m²	0.1482632289 ac
700 m²	0.172973767 ac
750 m²	0.1853290361 ac
800 m²	0.1976843052 ac
900 m²	0.2223948433 ac
1000 m²	0.2471053815 ac
1200 m²	0.2965264578 ac
1250 m²	0.3088817268 ac
1500 m²	0.3706580722 ac
1750 m²	0.4324344176 ac
2000 m²	0.4942107629 ac
2500 m²	0.6177634537 ac
3000 m²	0.7413161444 ac
4000 m²	0.9884215259 ac
4500 m²	1.111974217 ac
5000 m²	1.235526907 ac
6000 m²	1.482632289 ac
7000 m²	1.72973767 ac
7500 m²	1.853290361 ac
8000 m²	1.976843052 ac
9000 m²	2.223948433 ac
10000 m²	2.471053815 ac
15000 m²	3.706580722 ac
20000 m²	4.942107629 ac
25000 m²	6.177634537 ac
50000 m²	12.35526907 ac
75000 m²	18.53290361 ac
100000 m²	24.71053815 ac

Values based on NIST SP 811 conversion factors

Why Convert Square Meters to Acres?

Converting between square meters (m²) and acres (ac) is one of the most common area conversions. Whether for engineering, cooking, travel, or science, knowing how to quickly convert m² to ac saves time and prevents errors.

Area conversions between m² and ac are critical for real estate valuation, agriculture, and urban planning. Farmers need accurate conversions when calculating crop yields, fertilizer application rates, or irrigation needs across hectares and acres. Homeowners and interior designers use area conversion for flooring, painting, and carpeting estimates to avoid costly material waste or shortages. In environmental science, deforestation rates and habitat protection zones are often reported in differing units depending on the region. A misunderstanding in area units can lead to significant financial discrepancies in property sales or incorrect resource allocation in land management projects.

How to Convert Square Meters to Acres

To convert square meters to acres, use the following formula:

ac = m² × 0.0002471053815

Example: 1 m² = 0.0002471053815 ac

For example, 5 m² = 0.001235526907 ac, 10 m² = 0.002471053815 ac, and 100 m² = 0.02471053815 ac. For larger values, 1000 m² = 0.2471053815 ac. Conversely, 1 ac = 4046.856422 m². Our calculator above performs this conversion instantly with full precision — no rounding errors.

Common Mistakes to Avoid

Squaring the conversion factor: forgetting to square the linear conversion (1 ft = 12 in, but 1 sq ft = 144 sq in).
Confusing land units: mixing up acres and hectares.
Ignoring shape: area formulas differ for circles vs squares.

Pro Tips

Double check squares: Always ensure you're using square units (m²), not linear (m).
Estimation: An acre is roughly a football field (excluding end zones).
Paint calc: 1 gallon of paint covers approx 350-400 sq ft.

What is a Square Meter?

The square meter (m²) is the SI derived unit of area. It is defined as the area of a square with sides of one meter in length.

Square meters are the global standard for measuring land area, floor space in real estate, and material coverage (paint, flooring) worldwide.

What is a Acre?

The acre is a unit of land area in the Imperial and US customary systems. One acre equals 43,560 square feet or approximately 4,047 square meters.

Acres are standard for measuring large plots of land, agricultural fields, and public parks in the US, UK, and former British Commonwealth countries.

Frequently Asked Questions

How many acres are in 1 square meter?

1 m² equals 0.0002471053815 ac. This is an exact conversion factor defined by NIST.

How do I convert square meters to acres?

Multiply the value in m² by the conversion factor. For example, 10 m² = 0.002471053815 ac. Use our calculator above for instant results.

Is the square meters to acres conversion exact?

Yes, this conversion is mathematically exact based on the international definition of these units (NIST SP 811).

Can I convert square meters to acres offline?

Yes! OmniConvert runs entirely in your browser — no internet connection needed after the page loads. Your data never leaves your device, ensuring complete privacy.

What is the difference between square meters and acres?

Square Meters (m²) and Acres (ac) are both units of area but belong to different measurement systems. 1 m² = 0.0002471053815 ac. Use the converter above to switch between them instantly.

Square Meters → Acres