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Area Converter

Convert square feet, square meters, acres, hectares and other area units.

Your numbers

Make it your own
Updates as you type
Converted value
4,046.8564m2

Calculated from your inputs · rounded for display

Original1acre

International unit definitions. US and Imperial gallons and fluid ounces are different units; select the intended standard.

Your calculation, step by step

No black boxes
  1. Convert through square meters.
  2. 1 × 4,046.856422 ÷ 1 = 4,046.856422 m2.

How to use this calculator

  1. Enter your own values in the labeled fields. Check the units and assumptions before comparing results. Only the fields needed for your selected calculation mode are shown.
  2. Your answer updates automatically. Review the calculation steps to see exactly how it was calculated.
  3. Copy, share, save, or download your result. Saved inputs stay on this device.

How the calculation works

Output = input × source area factor / destination area factor

Area conversion squares the length relationship. A square foot is therefore 0.09290304 square meters rather than 0.3048 square meters. All values pass through square meters using international-foot definitions. Historical survey-foot units are not used.

A worked example

1 acre = 43,560 ft² = 4,046.8564224 m².

Reading your result

Use the main result together with its units and supporting figures. Display values are rounded; calculations keep their underlying precision. A change in inputs or assumptions can change the answer. Compare the step-by-step working with your intended use before relying on an estimate.

Frequently asked questions

Is an acre a metric unit?

No. One international acre is exactly 43,560 international square feet.

Does this convert cubic units?

No. Use Volume Converter for volume.

Sources & methodology

NIST: international unit conversion factors ↗

Formula review: October 24, 2026. Read our methodology.