At One Place

Acres to hectares

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

To convert acres to hectares, multiply by 0.4046856422. The table below gives the values people look up most often, and the converter works for any number.

Acres to hectares table

Common acre values converted to hectares.
Acres Hectares
1 acre 0.40469
2 acre 0.80937
3 acre 1.214057
4 acre 1.618743
5 acre 2.023428
10 acre 4.046856
15 acre 6.070285
20 acre 8.093713
25 acre 10.11714
30 acre 12.14057
40 acre 16.18743
50 acre 20.23428
75 acre 30.35142
100 acre 40.46856
250 acre 101.1714
500 acre 202.3428
1,000 acre 404.6856

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

How many hectares are in one acre?
One acre equals 0.40469 hectares. ha = acre × 0.4046856422.
How do you convert acres to hectares?
Use ha = acre × 0.4046856422. So 10 acre is 4.046856 ha.
How many acres are in one hectare?
One hectare equals 2.471054 acres, which is the reverse of the conversion above.

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