Square Miles to Hectares converter

Convert square miles (mi²) to hectares (ha) — results update instantly as you type.

Square Miles to Hectares

To258.999

1 mi² = 258.99881103 ha

How to convert Square Miles to Hectares

Area measurements describe surfaces — from apartment floor plans in square meters or square feet to farmland in acres and hectares, and entire countries in square kilometers or square miles.

Every area unit is a length unit squared, which is why conversion factors are large: one acre equals exactly 4,046.8564224 square meters and one hectare is exactly 10,000 square meters.

Formula

mi² × 258.9988110336 = ha

Multiply your square miles value by 258.9988110336 to get hectares. For the reverse, divide by the same factor.

Square Miles to Hectares conversion table

Square MilesHectares
1 mi²258.998811 ha
2 mi²517.997622 ha
5 mi²1,294.994055 ha
10 mi²2,589.98811 ha
25 mi²6,474.970276 ha
100 mi²25,899.881103 ha

Common use cases

  • Real estate listings between square feet and square meters
  • Farmland and plots between acres and hectares
  • Country and city size comparisons
  • Construction material coverage estimates

Frequently asked questions

One acre equals 43,560 square feet, or about 4,047 square meters — roughly 90% of an American football field.