Conversion reference
Formula: ha = mi2 x 258.998811034.
Square miles to Hectares Converter
Convert Square miles (mi2) to Hectares (ha). Change either field to update the other value instantly.
mi2 and ha converter
This page converts area units directly in your browser.
mi2 to ha conversion table
| Square miles | Hectares |
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mi2 to ha formula
About mi2
Square miles are used in area conversions. Enter a mi2 value above to calculate ha instantly.
About ha
Hectares are the target unit on this page. The table below gives common reference values for quick comparison.
Convert other units to ha
These pages use ha as the target unit.