Conversions
Area Unit Converter
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How to use it
Using the area unit converter
- 01
Enter the area
Use any positive figure from room sizes to ranches.
- 02
Set the units
Imperial on one side, metric on the other, or any mix.
- 03
Read the landscape
Context rows show acres, hectares and square footage together for land math.
Good to know
Acres vs hectares
A hectare; 10,000 m², a tidy 100 m square; is about 2.471 acres. Most of the world lists land in hectares while US real estate speaks acres; flipping between them is the single most common land-area conversion.
Squaring surprises
Area grows quadratically: doubling a side multiplies area fourfold. A 20 ft × 20 ft deck is not twice a 10 × 10 but four times; 400 ft² against 100 ft². Convert lengths before squaring, never after.
Football-pitch intuition
A FIFA-standard pitch runs roughly 0.7 hectares or 1.75 acres. Anchoring unfamiliar figures to a familiar field keeps listing photos honest about scale.
How it's calculated
The math behind this calculator
result = value × factor(from) ÷ factor(to)
Exact anchors: 1 acre = 4046.8564224 m², 1 hectare = 10,000 m²Areas square the linear definitions: the international foot of 0.3048 m gives a square foot of exactly 0.09290304 m², and the acre resolves to 4046.8564224 m². Everything funnels through square meters and back out to your target unit.
Assumptions & limitations
- Results are rounded only for display; full precision is used internally.
- Conversions use exact standard definitions of each unit.
Worked example
A 10-acre plot is about 4.05 hectares; the comparison every buyer makes when reading land listings across borders.
FAQ
Frequently asked questions
- Why is a US survey acre slightly odd?
- It derives from the pre-1959 survey foot; the difference from the international acre used here is under one part per million; irrelevant outside geodetic surveying.
- How many square feet in an acre?
- Exactly 43,560 ft², a holdover from medieval furlong-by-chain plowing strips.
- Is a square mile the same as a section?
- Yes; the US Public Land Survey defines a section as one square mile, or 640 acres.
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