The image below represents square miles to hectares.

To convert square miles to hectares, one essential parameter is needed and this parameter is **Unit Value.**

The formula for converting square miles to hectares:

1 Square Mile = 258.9988 Hectares

Let’s solve an example;

Find the conversion of square miles to hectares when the unit value is 4.

1 Square Mile = 258.9988 Hectares

Then,

4 Square Miles = (4 x 258.9988) Hectares

4 Square Miles = 1035.9952 Hectares

Therefore, the **hectare(s) **is **1035.99.**