Convert Square Miles to Hectares
1 mi² = 259 ha
Conversion Table
| square miles (mi²) | hectares (ha) |
|---|---|
| 0.5 | 129.5 |
| 1 | 259 |
| 2 | 518 |
| 5 | 1294.99 |
| 10 | 2589.99 |
| 25 | 6474.97 |
| 50 | 12949.94 |
| 100 | 25899.88 |
| 250 | 64749.7 |
| 500 | 129499.4 |
| 1000 | 258998.8 |
How to Convert square miles to hectares
To convert square miles to hectares, multiply the value by the conversion factor:
For example: 10 mi² = 2589.99 ha
About square miles and hectares
The Conversion Formula
To convert square miles to hectares, multiply the value by the conversion factor: 1 mi² = 259 ha. For a worked example, suppose you need to convert 25 mi² to hectares: 25 × 259 = 6474.97 ha. To convert in the opposite direction, divide by 259, or equivalently multiply by 0.00386102.
About square miles
The square mile is an imperial unit of area equal to 640 acres. In the US, it is famously linked to the 'section' in the Public Land Survey System, which divided the American West into 1-mile grids. It is the standard for reporting town and county sizes in the US and UK. square miles are commonly used in City and state sizes (US), Population density (people/sq mi), Large ranch sales, and Weather systems, US Census data.
The island of Manhattan is roughly 23 square miles.
About hectares
The hectare (ha) is the primary unit for measuring land in the metric world. Derived from 'hecto' (hundred) and 'are' (a historical unit of 100 m²), a hectare is 100 ares, or 10,000 square meters. It is approximately 2.47 acres. It is the language of international agriculture, forestry, and rural planning. hectares are commonly used in Farm sizes, Vineyards, Forestry management, and Real estate (Europe/Asia), Wildfire reporting.
A standard international rugby field is roughly 1 hectare.
When Would You Convert square miles to hectares?
Converting between square miles and hectares is one of the most common area conversions. You might need this conversion when working with international specifications, following instructions written for a different measurement system, or comparing values across different standards. Having the conversion factor (1 mi² = 259 ha) memorized or bookmarked can save time in professional and everyday contexts alike.