Area Converter

Area Converter

This area converter instantly converts between metric and imperial area units, including square millimeters, square centimeters, square meters, square kilometers, square inches, square feet, square yards, acres, and hectares. It is essential for real estate, construction, land surveying, and agriculture.

How Area Conversion Works

All conversions pass through square meters (m²) as the base unit. The value is multiplied by the source unit’s factor to convert to m², then divided by the target unit’s factor.

Key conversion factors to m²:

• 1 sq ft = 0.092903 m²
• 1 sq yd = 0.836127 m²
• 1 acre = 4,046.86 m²
• 1 hectare = 10,000 m²
• 1 sq km = 1,000,000 m²
• 1 sq in = 6.4516 x 10⁻⁴ m²

Example

Key Factors That Affect Area Conversions

• Scale differences — an acre is 43,560 sq ft, so small rounding errors can become significant at large scales
• Metric vs. imperial — real estate in the US uses sq ft and acres, while most other countries use m² and hectares
• Lot size conventions — residential lots are usually measured in sq ft or acres; farmland in hectares or acres
• Precision needs — construction requires sq ft or sq m precision, while regional land use may only need acres or hectares

Tips

1. For quick mental math: 1 acre is roughly 4,047 m² or about 90% of a football field
2. A hectare is exactly 10,000 m² (100m x 100m) — roughly 2.47 acres
3. When comparing international real estate listings, convert sq ft to sq m by dividing by 10.764