Convert square miles to hectares

Square miles to hectares. Enter a value to convert, or use the square miles to hectares chart further down the page.

1 mi² = 258.998811 ha

1 square mile equals 258.998811 hectares. Going the other way, 1 hectare = 0.003861021585 square miles.

How to convert square miles to hectares

To convert square miles to hectares, multiply the square mile value by 258.998811. You can also divide by 0.003861021585 to get the same answer.

ha = mi² × 258.998811

Convert 15 mi² to hectares:

15 mi² = 3,884.982166 ha

Use this square miles to hectares table for quick reference without typing anything.

A square mile is exactly 640 acres, or about 2.59 square kilometers. It is the unit used for US county and city areas.

A hectare is 10,000 square meters — a square 100 m on each side. It is the metric standard for land and agricultural area.

How many hectares are in a square mile?

1 square miles equals 258.998811 hectares. Going the other way, 1 hectares is 0.003861021585 square miles.

How do you convert square miles to hectares?

To convert square miles to hectares, multiply the square mile value by 258.998811. You can also divide by 0.003861021585 to get the same answer.

What is 10 square miles in hectares?

10 square miles equals 2,589.98811 hectares. The conversion chart on this page lists the other values people look up most often.