Conversion Factors for Units of Area (Large Units)
Metric Units British Units
Hectare
(hc) 		Square mile
(sq. mile)		 Acre Rood Square rod
(sq. rod)		 Square yard
(yd2)
1 Hectare
(hc)		 1 0.00386102 2.47105 9.8842 395.369 11959.9
 
1 Square mile
(sq mile)		 258.999 1 640 2560 102400 3097600
 
1 Acre 0.404686 0.0015625 1 4 160 4840
 
1 Rood 0.101171 3.90625 x 10-4 0.25 1 40 1200
 
1 Square rod
(sq rod)		 0.00252929 9.7656 x 10-6 0.00625 0.25 1 30.25
 
1 Square Yard
(yd2)		 8.3613 x 10-5 3.22831 x 10-7 2.06612 x 10-4 8.2645 x 10-4 0.0330579 1