Area Converter

How to use

1. 1Enter the area value in the input. The number can use a period (1.5) or a comma (1,5) as the decimal separator and accepts thousand separators like 12,000.
2. 2Pick the source unit. Buttons are grouped into Metric (sq mm, sq cm, m², hectare, sq km), Imperial (sq in, sq ft, sq yd, acre, sq mi), and Specialty (are).
3. 3Read every other unit at once in the metric and imperial result columns. The source card is highlighted in blue.
4. 4Optional: change Decimal places to 0, 2, 4, or 6 to control rounding, and Show units to focus on Metric only or Imperial only.
5. 5Use the quick conversion buttons (sq ft to sq m, acres to hectares, sq mi to sq km, etc.) to load common pairs in one click, or tap a reference (parking spot, hectare, acre, Central Park) to see it in every unit instantly.

About this tool

Area Converter changes a single area value into every common unit at once: square millimeters, square centimeters, square meters, hectares, and square kilometers on the metric side, plus square inches, square feet, square yards, acres, and square miles on the imperial side, with the metric are also covered for completeness. Type any positive number, pick the unit you started in, and every other unit updates instantly with the chosen number of decimal places. All conversion factors are exact derivations of the international yard (1 yd = 0.9144 m exactly), which fixes 1 sq ft at 0.09290304 m², 1 acre at 4046.8564224 m², and 1 sq mi at 2,589,988.110336 m². The tool also picks the most readable metric and imperial unit for the value automatically (so an answer in the millions of square meters reads back as square kilometers and square miles instead of huge raw numbers), shows you the exact factor for each unit, and offers quick-conversion buttons for the most searched pairs (sq ft to sq m, acres to hectares, sq mi to sq km, and others). A reference list of real-world areas (parking spot, NBA basketball court, NFL football field, FIFA soccer pitch, 1 acre, 1 hectare, Central Park, Manhattan, Singapore, Greater London) loads any reference into the converter with one click so you can see what 1 acre actually looks like in every unit. Useful for real estate listings, lot sizing, agriculture and farm planning, floor plans and architecture, landscaping, construction takeoffs, sports field math, geography homework, and any time you need to compare US imperial land units with metric. The whole conversion runs in your browser, so the addresses, plot sizes, and floor plans you paste here never leave your device.

Free to use. Works in your browser. No signup, no login.