Convert acre to hectare
1 acre = 0.4046856 hectares. Enter any value below for an exact conversion.
1 ac =
0.4046856 ha
hectares
Need the reverse? Convert hectare to acre →
Formula
1 acre = 0.4046856 hectares hectare = acres × 0.4046856 acre = hectares × 2.471054
acre to hectare conversion table
1 ac0.4046856 ha
2 ac0.8093713 ha
3 ac1.214057 ha
5 ac2.023428 ha
10 ac4.046856 ha
20 ac8.093713 ha
25 ac10.11714 ha
50 ac20.23428 ha
100 ac40.46856 ha
1000 ac404.6856 ha
About converting acres to hectares
Acres to hectares is a land-measurement conversion for real estate, farming, and mapping between imperial and metric systems. One acre is about 0.405 hectares.
Frequently asked questions
How many hectares are in a acre?
One acre equals 0.4046856 hectares. So 10 acres is 4.046856 hectares. Use the converter above for any value.
What is the formula to convert acres to hectares?
1 acre = 0.4046856 hectares hectare = acres × 0.4046856 acre = hectares × 2.471054
Is the acre-to-hectare conversion exact?
Yes. The conversion factor between acres and hectares is defined exactly, so results are precise — only rounded for display.