Square Meter to Acre Conversion Calculator: Free Online Tool
Convert square meters to acres with our free online area converter.
Square Meter to Acre Calculator
How to Use the Calculator:
- Enter the value you want to convert in the 'From' field (Square Meter).
- The converted value in Acre will appear automatically in the 'To' field.
- Use the dropdown menus to select different units within the Area category.
- Click the swap button (⇌) to reverse the conversion direction.
How to Convert Square Meter to Acre
Converting Square Meter to Acre involves multiplying the value by a specific conversion factor, as shown in the formula below.
Formula:
1 Square Meter = 0.000247105 acresExample Calculation:
Convert 10 square meters: 10 × 0.000247105 = 0.00247105 acres
Note: Conversion factors can sometimes be rounded for display purposes. For precise calculations, always use the full factor or rely on the calculator above.
What is a Square Meter and a Acre?
The square meter (symbol: m²) is the SI derived unit of area. It represents the area of a square with sides that are each one meter long.
The acre (symbol: ac) is a unit of land area used in the imperial and US customary systems. It is traditionally defined as the area of one chain by one furlong (66 by 660 feet), which is exactly equal to 1/640 of a square mile, 43,560 square feet, or about 4,047 square meters.
Note: The Square Meter is part of the metric (SI) system, primarily used globally in science and trade. The Acre belongs to the imperial/US customary system.
History of the Square Meter and Acre
Derived directly from the meter, which was defined during the French Revolution, the square meter became the standard unit of area within the International System of Units (SI) established in 1960. Its adoption provided a consistent, universally accepted measure for scientific, technical, and everyday area calculations.
The acre originated in medieval England as the amount of land tillable by one man behind one ox in one day. Its size varied historically but was standardized under the Weights and Measures Act of 1878 in the UK. It remains a common unit for land measurement in several countries, especially for agricultural and large residential plots.
Common Uses for square meters and acres
Explore the typical applications for both Square Meter (metric) and Acre (imperial/US) to understand their common contexts.
Common Uses for square meters
- Real Estate & Construction (Metric): Standard unit for measuring floor space in buildings, room sizes, and land parcels in countries using the metric system.
- Science & Engineering: Used extensively in physics (e.g., calculating pressure = force/area), material science, and various engineering fields for surface area calculations.
- Textiles & Manufacturing: Measuring the area of fabrics, paper, or other sheet materials.
- Gardening & Landscaping: Estimating the area for planting, paving, or turfing small to medium-sized plots.
Common Uses for acres
- Land Measurement (US/UK etc.): Standard unit for measuring plots of land, especially farms, large residential lots, and undeveloped land in the US, UK, Canada, Australia, India, and other Commonwealth countries.
- Real Estate: Used in property listings and surveys for land parcels.
- Agriculture: Common unit for describing farm sizes and field areas.
Frequently Asked Questions
Questions About Square Meter (m²)
What is the base SI unit for area?
The square meter (m²) is the SI derived unit for area.
How big is a square meter?
It's the area of a square where each side is exactly one meter long. Imagine a square roughly the size of a large beach towel.
How many square feet are in a square meter?
One square meter is approximately 10.764 square feet.
Is the square meter used worldwide?
Yes, it is the standard unit of area in the vast majority of countries that use the metric system and is the standard in science and engineering globally.
About Acre (ac)
How big is an acre visually?
An acre is roughly 90% of the size of an American football field (including the end zones).
How many square feet are in an acre?
There are exactly 43,560 square feet in one acre.
How many acres are in a hectare?
One hectare contains approximately 2.471 acres.
Is the acre used worldwide?
While common in the US, UK, and Commonwealth countries, it is not part of the metric system (SI) and is less common globally than the hectare or square meter for land measurement.
Conversion Table: Square Meter to Acre
| Square Meter (m²) | Acre (ac) |
|---|---|
| 1 | 0 |
| 5 | 0.001 |
| 10 | 0.003 |
| 25 | 0.006 |
| 50 | 0.012 |
| 100 | 0.025 |
| 500 | 0.124 |
| 1,000 | 0.247 |