Convert acre to hectare
1 ac = 0.4046856422 ha
1 ac = 0.40469 ha
1 ac in every area unit
| microbarn | 4.0469e+37 μb |
| millibarn | 4.0469e+34 mb |
| barn | 4.0469e+31 b |
| square nanometer | 4.0469e+21 nm² |
| square micrometer | 4.0469e+15 μm² |
| circular mil | 7,986,600,000,000 cmil |
| thousand circular mils | 7,986,600,000 kcmil |
| square millimeter | 4,046,900,000 mm² |
| square centimeter | 40,469,000 cm² |
| square inch | 6,272,600 in² |
| square decimeter | 404,690 dm² |
| square foot | 43,560 ft² |
| square yard | 4,840 yd² |
| square meter | 4,046.9 m² |
| tsubo | 1,224.2 tsubo |
| square rod | 160 rd² |
| are | 40.469 a |
| square chain | 10 ch² |
| dunam | 4.0469 dunam |
| rood | 4 rood |
| acre | 1 ac |
| hectare | 0.40469 ha |
| square kilometer | 0.0040469 km² |
| square mile | 0.0015625 mi² |
How the conversion works
Multiply by 0.4046856422 to go from acre to hectare, or divide by it to go back. Every conversion on this site routes through the SI value (m²) rather than a table of pairwise factors, so a round-trip returns exactly what you started with.
Going the other way? hectare to acre — 1 ha = 2.471053815 ac.
acre to hectare — common values
| 1 ac | 0.40468564 ha |
| 2 ac | 0.80937128 ha |
| 3 ac | 1.2140569 ha |
| 5 ac | 2.0234282 ha |
| 10 ac | 4.0468564 ha |
| 15 ac | 6.0702846 ha |
| 20 ac | 8.0937128 ha |
| 25 ac | 10.117141 ha |
| 50 ac | 20.234282 ha |
| 75 ac | 30.351423 ha |
| 100 ac | 40.468564 ha |
| 250 ac | 101.17141 ha |
| 500 ac | 202.34282 ha |
| 1000 ac | 404.68564 ha |