 Convert Hectares (ha) to Square Miles (mi²) | ha in mi²
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# Let's convert Hectares (ha) to Square Miles (mi²)

This quick and easy calculator will convert Hectares (ha) to Square Miles (mi²) and show formula, brief history on the units and quick maths for the conversion.

## Quick Reference for Converting Hectares to Square Miles

Formula
mi² = ha / 259
Quick Rough Maths
To get the Square Miles, divide the number of Hectares by 259.0
Hectares (ha) in 1 Square Mile
There are 259 Hectares in 1 Square Mile
Square Miles (mi²) in 1 Hectare
There are 0 Square Miles in 1 Hectare

## Unit Information

Hectare
/ˈhɛktɛː,ˈhɛktɑː/
Symbol: ha
Unit System: Non-SI Metric

### What is the Hectare?

The hectare is a unit of area and is a non-SI but metric unit with the symbol ha.

It represents the area equal to that of a square with edges 100m long (ie 1hm² or 10,000m²). This is the equivalent to about 2.47 acres.

Its size is down to its use primary use; that for measuring the size of land.

Square Mile
/skwɛːˌmʌɪl/
Symbol: mi²
Unit System: Imperial

### What is the Square Mile?

The square mile is a unit of area and is an imperial unit with the symbol mi².

One square mile is equal in area to a square with edges one mile in length.

The Romans established the square mile; computed through a system of feet, paces and marches. The square mile's existence still remains in some places; for example "The Square Mile" is a term often used to describe the very centre of London in the UK (which just so happens to measure 1mi²).