Area Converter
Convert between square metres, square feet, square yards, acres, hectares and more.
Formula and sources updated · Data sources · 1View algorithm, constants and default inputs (JSON)
1 ft² = 0.09290304 m²
About this calculator
Area units are squared, so the conversion factors are the square of the corresponding length factors. That is why a square yard is nine square feet rather than three.
Worked example
calculated with the default values below
Value 1 · From Square metres · To Square feet · Decimal places 4 Result in selected unit 10.7639 · Square metres 1.000000 m² · Square feet 10.763910 ft² · Acres 0.000247 ac
Method and assumptions
Convert area via square metres; square units use squared length factors. Only the displayed unit definitions are converted; rounding and measurement uncertainty are separate.
Data sources
Disclaimer
These calculators give general conversion results. Rounding and the precision of the value you enter both affect the output, so treat displayed decimals as indicative rather than exact.
Implementation source
This record describes the implementation used by this page. It is not independent validation. External references, when available, support only the stated formula or definition; estimates and custom rules retain their own assumptions.
Formula and variables
A₂ = A₁ × k₁ ÷ k₂
- A₁
- Input value
- A₂
- Converted result
- k₁
- Factor of source unit, in m²
- k₂
- Factor of target unit
Factors express each unit in square metres; e.g. 1 ft² = 0.09290304 m².
Frequently asked questions
Why is one square yard nine square feet rather than three?
Area conversions square the length conversion factor. Since one yard is three feet, one square yard is 3 × 3 = 9 square feet. Likewise, one square metre is about 10.7639 square feet (often rounded to 10.76). The converter uses square-metre conversion factors consistently for each supported unit.
Which inputs and limits apply to Area Converter?
Use the units shown beside each field. These are form limits, not recommended settings. Value: 0–1,000,000,000,000 Convert area via square metres; square units use squared length factors. Only the displayed unit definitions are converted; rounding and measurement uncertainty are separate.
What is a complete worked example for Value = 1; From = Square metres?
Inputs: Value = 1; From = Square metres; To = Square feet; Decimal places = 4. Calculation: A₂ = A₁ × k₁ ÷ k₂. Results: Result in selected unit = 10.7639 ft²; Square metres = 1.000000 m²; Acres = 0.000247 ac.