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

ac → m² Reference Table

ac	m²
0.001 ac	4.046856422 m²
0.002 ac	8.093712845 m²
0.003 ac	12.14056927 m²
0.004 ac	16.18742569 m²
0.005 ac	20.23428211 m²
0.006 ac	24.28113853 m²
0.007 ac	28.32799496 m²
0.008 ac	32.37485138 m²
0.009 ac	36.4217078 m²
0.01 ac	40.46856422 m²
0.02 ac	80.93712845 m²
0.03 ac	121.4056927 m²
0.04 ac	161.8742569 m²
0.05 ac	202.3428211 m²
0.06 ac	242.8113853 m²
0.07 ac	283.2799496 m²
0.08 ac	323.7485138 m²
0.09 ac	364.217078 m²
0.1 ac	404.6856422 m²
0.2 ac	809.3712845 m²
0.3 ac	1214.056927 m²
0.4 ac	1618.742569 m²
0.5 ac	2023.428211 m²
0.6 ac	2428.113853 m²
0.7 ac	2832.799496 m²
0.8 ac	3237.485138 m²
0.9 ac	3642.17078 m²
1 ac	4046.856422 m²
1.5 ac	6070.284634 m²
2 ac	8093.712845 m²
2.5 ac	10117.14106 m²
3 ac	12140.56927 m²
3.5 ac	14163.99748 m²
4 ac	16187.42569 m²
4.5 ac	18210.8539 m²
5 ac	20234.28211 m²
5.5 ac	22257.71032 m²
6 ac	24281.13853 m²
6.5 ac	26304.56675 m²
7 ac	28327.99496 m²
7.5 ac	30351.42317 m²
8 ac	32374.85138 m²
8.5 ac	34398.27959 m²
9 ac	36421.7078 m²
9.5 ac	38445.13601 m²
10 ac	40468.56422 m²
11 ac	44515.42065 m²
12 ac	48562.27707 m²
13 ac	52609.13349 m²
14 ac	56655.98991 m²
15 ac	60702.84634 m²
16 ac	64749.70276 m²
17 ac	68796.55918 m²
18 ac	72843.4156 m²
19 ac	76890.27203 m²
20 ac	80937.12845 m²
25 ac	101171.4106 m²
30 ac	121405.6927 m²
35 ac	141639.9748 m²
40 ac	161874.2569 m²
45 ac	182108.539 m²
50 ac	202342.8211 m²
55 ac	222577.1032 m²
60 ac	242811.3853 m²
65 ac	263045.6675 m²
70 ac	283279.9496 m²
75 ac	303514.2317 m²
80 ac	323748.5138 m²
85 ac	343982.7959 m²
90 ac	364217.078 m²
95 ac	384451.3601 m²
100 ac	404685.6422 m²
120 ac	485622.7707 m²
125 ac	505857.0528 m²
130 ac	526091.3349 m²
140 ac	566559.8991 m²
150 ac	607028.4634 m²
160 ac	647497.0276 m²
175 ac	708199.8739 m²
180 ac	728434.156 m²
200 ac	809371.2845 m²
225 ac	910542.695 m²
250 ac	1011714.106 m²
275 ac	1112885.516 m²
300 ac	1214056.927 m²
350 ac	1416399.748 m²
400 ac	1618742.569 m²
450 ac	1821085.39 m²
500 ac	2023428.211 m²
600 ac	2428113.853 m²
700 ac	2832799.496 m²
750 ac	3035142.317 m²
800 ac	3237485.138 m²
900 ac	3642170.78 m²
1000 ac	4046856.422 m²
1200 ac	4856227.707 m²
1250 ac	5058570.528 m²
1500 ac	6070284.634 m²
1750 ac	7081998.739 m²
2000 ac	8093712.845 m²
2500 ac	10117141.06 m²
3000 ac	12140569.27 m²
4000 ac	16187425.69 m²
4500 ac	18210853.9 m²
5000 ac	20234282.11 m²
6000 ac	24281138.53 m²
7000 ac	28327994.96 m²
7500 ac	30351423.17 m²
8000 ac	32374851.38 m²
9000 ac	36421707.8 m²
10000 ac	40468564.22 m²
15000 ac	60702846.34 m²
20000 ac	80937128.45 m²
25000 ac	101171410.6 m²
50000 ac	202342821.1 m²
75000 ac	303514231.7 m²
100000 ac	404685642.2 m²

Values based on NIST SP 811 conversion factors

Why Convert Acres to Square Meters?

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

Area conversions between ac and m² 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 Acres to Square Meters

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

m² = ac × 4046.856422

Example: 1 ac = 4046.856422 m²

For example, 5 ac = 20234.28211 m², 10 ac = 40468.56422 m², and 100 ac = 404685.6422 m². For larger values, 1000 ac = 4046856.422 m². Conversely, 1 m² = 0.0002471053815 ac. 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 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.

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.

Frequently Asked Questions

How many square meters are in 1 acre?

1 ac equals 4046.856422 m². This is an exact conversion factor defined by NIST.

How do I convert acres to square meters?

Multiply the value in ac by the conversion factor. For example, 10 ac = 40468.56422 m². Use our calculator above for instant results.

Is the acres to square meters conversion exact?

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

Can I convert acres to square meters 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 acres and square meters?

Acres (ac) and Square Meters (m²) are both units of area but belong to different measurement systems. 1 ac = 4046.856422 m². Use the converter above to switch between them instantly.

Acres → Square Meters