Sumwise

Hectares to square miles

square miles = hectares × 0.00386102

Reverse: square miles to hectares

How to convert hectares to square miles

One hectare is 0.00386102 square miles, so multiply the number of hectares by 0.00386102. For example, 20 hectares is 20 × 0.00386102 = 0.07722043 square miles. To go back, divide by the same number, or multiply by 258.998811.

Quick estimate

Multiplying by about 0.004 gets within 3.6% of the exact answer, which is enough to check that a result makes sense.

Where it comes up

Area conversions come up when buying flooring, paint or turf, comparing house and flat sizes, and measuring land and gardens.

hectaressquare miles
1 ha0.00386102 mi2
2 ha0.00772204 mi2
3 ha0.01158306 mi2
4 ha0.01544409 mi2
5 ha0.01930511 mi2
6 ha0.02316613 mi2
7 ha0.02702715 mi2
8 ha0.03088817 mi2
9 ha0.03474919 mi2
10 ha0.03861022 mi2
11 ha0.04247124 mi2
12 ha0.04633226 mi2
13 ha0.05019328 mi2
14 ha0.0540543 mi2
15 ha0.05791532 mi2
16 ha0.06177635 mi2
17 ha0.06563737 mi2
18 ha0.06949839 mi2
19 ha0.07335941 mi2
20 ha0.07722043 mi2
25 ha0.09652554 mi2
30 ha0.11583065 mi2
40 ha0.15444086 mi2
50 ha0.19305108 mi2
60 ha0.2316613 mi2
70 ha0.27027151 mi2
75 ha0.28957662 mi2
80 ha0.30888173 mi2
90 ha0.34749194 mi2
100 ha0.38610216 mi2
120 ha0.46332259 mi2
150 ha0.57915324 mi2
200 ha0.77220432 mi2
250 ha0.9652554 mi2
300 ha1.158306 mi2
400 ha1.544409 mi2
500 ha1.930511 mi2
750 ha2.895766 mi2
1,000 ha3.861022 mi2
1,500 ha5.791532 mi2
2,000 ha7.722043 mi2
5,000 ha19.305108 mi2
10,000 ha38.610216 mi2

Questions

How many square miles are in a hectare?

0.00386102 square miles.

How do I convert hectares to square miles in a spreadsheet?

Put the value in A1 and type =A1*0.00386102, then fill the formula down the column.

Are the values in the table exact?

They are calculated from the exact definitions of the units and rounded only for display. Open any row for the full working.