# Square Miles to Hectares (sq mi to ha) Conversion Calculator

This converter provides conversion of square miles to hectares (sq mi to ha) and backwards.

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Conversion Chart
 square miles to hectares Conversion Table: 1 sq mi = 258.9988 ha2 sq mi = 517.9976 ha3 sq mi = 776.9964 ha4 sq mi = 1035.9952 ha5 sq mi = 1294.9941 ha6 sq mi = 1553.9929 ha7 sq mi = 1812.9917 ha8 sq mi = 2071.9905 ha9 sq mi = 2330.9893 ha10 sq mi = 2589.9881 ha11 sq mi = 2848.9869 ha12 sq mi = 3107.9857 ha13 sq mi = 3366.9845 ha14 sq mi = 3625.9834 ha15 sq mi = 3884.9822 ha16 sq mi = 4143.981 ha17 sq mi = 4402.9798 ha18 sq mi = 4661.9786 ha19 sq mi = 4920.9774 ha20 sq mi = 5179.9762 ha21 sq mi = 5438.975 ha22 sq mi = 5697.9738 ha23 sq mi = 5956.9727 ha24 sq mi = 6215.9715 ha25 sq mi = 6474.9703 ha26 sq mi = 6733.9691 ha27 sq mi = 6992.9679 ha28 sq mi = 7251.9667 ha29 sq mi = 7510.9655 ha30 sq mi = 7769.9643 ha31 sq mi = 8028.9631 ha32 sq mi = 8287.962 ha33 sq mi = 8546.9608 ha34 sq mi = 8805.9596 ha35 sq mi = 9064.9584 ha36 sq mi = 9323.9572 ha37 sq mi = 9582.956 ha38 sq mi = 9841.9548 ha39 sq mi = 10100.9536 ha40 sq mi = 10359.9524 ha41 sq mi = 10618.9513 ha42 sq mi = 10877.9501 ha43 sq mi = 11136.9489 ha44 sq mi = 11395.9477 ha45 sq mi = 11654.9465 ha46 sq mi = 11913.9453 ha47 sq mi = 12172.9441 ha48 sq mi = 12431.9429 ha49 sq mi = 12690.9417 ha50 sq mi = 12949.9406 ha 51 sq mi = 13208.9394 ha52 sq mi = 13467.9382 ha53 sq mi = 13726.937 ha54 sq mi = 13985.9358 ha55 sq mi = 14244.9346 ha56 sq mi = 14503.9334 ha57 sq mi = 14762.9322 ha58 sq mi = 15021.931 ha59 sq mi = 15280.9299 ha60 sq mi = 15539.9287 ha61 sq mi = 15798.9275 ha62 sq mi = 16057.9263 ha63 sq mi = 16316.9251 ha64 sq mi = 16575.9239 ha65 sq mi = 16834.9227 ha66 sq mi = 17093.9215 ha67 sq mi = 17352.9203 ha68 sq mi = 17611.9192 ha69 sq mi = 17870.918 ha70 sq mi = 18129.9168 ha71 sq mi = 18388.9156 ha72 sq mi = 18647.9144 ha73 sq mi = 18906.9132 ha74 sq mi = 19165.912 ha75 sq mi = 19424.9108 ha76 sq mi = 19683.9096 ha77 sq mi = 19942.9084 ha78 sq mi = 20201.9073 ha79 sq mi = 20460.9061 ha80 sq mi = 20719.9049 ha81 sq mi = 20978.9037 ha82 sq mi = 21237.9025 ha83 sq mi = 21496.9013 ha84 sq mi = 21755.9001 ha85 sq mi = 22014.8989 ha86 sq mi = 22273.8977 ha87 sq mi = 22532.8966 ha88 sq mi = 22791.8954 ha89 sq mi = 23050.8942 ha90 sq mi = 23309.893 ha91 sq mi = 23568.8918 ha92 sq mi = 23827.8906 ha93 sq mi = 24086.8894 ha94 sq mi = 24345.8882 ha95 sq mi = 24604.887 ha96 sq mi = 24863.8859 ha97 sq mi = 25122.8847 ha98 sq mi = 25381.8835 ha99 sq mi = 25640.8823 ha100 sq mi = 25899.8811 ha

1 square mile (sq mi) = 258.9988110336 hectare (ha). Square Mile (sq mi) is a unit of Area used in Standard system. Hectare (ha) is a unit of Area used in Metric system. Square miles can also be marked as mi2. There is no need to add an s to an abbreviation of hectare - ha.