At One Place

1 acre to ha

1 acre in hectares
1 acre = 0.40469 ha
ha = acre × 0.4046856422

1 acre is 0.40469 hectares. To get there, multiply by 0.4046856422.

Values either side

Acres near 1, converted to hectares.
Acres Hectares
0.5 acre 0.20234
1 acre ← 0.40469
1.5 acre 0.60703
2 acre 0.80937
2.5 acre 1.011714
3 acre 1.214057

How the conversion works

The relationship is ha = acre × 0.4046856422. Both units measure area, so the conversion is a fixed factor that never changes.

Common questions

What is 1 acre in hectares?
1 acre is 0.40469 ha.
How do you convert acres to hectares?
Multiply by 0.4046856422.

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