At One Place

1 mi² to ha

1 square mile in hectares
1 mi² = 258.9988 ha
ha = mi² × 258.998811

1 square mile is 258.9988 hectares. To get there, multiply by 258.998811.

Values either side

Square miles near 1, converted to hectares.
Square miles Hectares
0.5 mi² 129.4994
1 mi² ← 258.9988
1.5 mi² 388.4982
2 mi² 517.9976
2.5 mi² 647.497
3 mi² 776.9964

How the conversion works

The relationship is ha = mi² × 258.998811. Both units measure area, so the conversion is a fixed factor that never changes.

Common questions

What is 1 mi² in hectares?
1 mi² is 258.9988 ha.
How do you convert square miles to hectares?
Multiply by 258.998811.

Related pages

Sources

  1. Guide for the Use of the International System of Units (SP 811) — NIST (Public domain (US Government))
  2. The International System of Units (SI Brochure) — Bureau International des Poids et Mesures
  3. Calculated on this page — At One Place

How these figures are compiled and checked