area unit converter
Convert Area units, compare 18 unit definitions and explore formulas, examples and common questions.
Area converter
Popular conversions
Complete unit directory18 units
Choose a source unit to see every available target unit. Each directory has a stable address.
- Aresa
- Square centimetrescm²
- Square decimetresdm²
- Square feetft²
- Hectaresha
- Square inchesin²
- Square kilometreskm²
- Square millimetresmm²
- Square metresm²
- Square nanometresnm²
- Square yardsyd²
- Square micrometresµm²
- Square rods
- Roods
- Acres
- Homesteads
- Square miles
- Townships
No matching units. Try a name or symbol.
How to use this calculator
- Enter the value you want to convert.
- Choose the source and target units, then adjust the display precision if needed.
- Read the result. Select Convert to open a page for this value, or use the table below.
Definitions and assumptions
Area factors are expressed relative to square metres. A length conversion factor is squared for area: one square foot is 0.09290304 square metres. Land-survey units use the conventions listed for each unit.
Frequently asked questions
Which Area units are supported?
The directory lists 18 units, including symbols and availability. Choose any source unit to browse its target units.
how to convert ft² to m²?
The calculator converts the input to the category's reference unit, then divides by the target unit's factor. 1 × 0.09290304 ≈ 0.092903 Square metres. Use the source and target factors shown in the formula. The worked example uses the value on this page, and the table provides other common values.
Can I use a length conversion factor directly for area?
No. Square the length factor when both dimensions change. For example, because one foot is 0.3048 metres, one square foot is 0.3048² square metres.
Why is the displayed result rounded?
Auto mode preserves significant digits for small values; manual mode rounds to the selected decimal places. ≈ means approximate; < means below the display limit. Extreme values use × 10ⁿ. Calculations are rounded only for display.
What input range can I use?
This calculator accepts non-negative values up to 1 trillion, with up to 8 decimal places. It does not calculate signed vectors or calendar date intervals.
Why is a unit unavailable?
A conversion is unavailable when a verified unit definition or a current exchange-rate value has not been configured. The tool does not invent a coefficient.
Sources and methodology
Methods and sources · Content revised
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