1 square mile to square kilometers

1 mi² = 2.589988 km². Change the amount below, or read the formula and the reference table further down.

1 square mile equals

2.589988square kilometers

1 mi² = 2.589988 km²

The formula

Square miles and square kilometers both measure area from the same zero, so a single multiplier does the job.

km² = mi² × 2.58998811

Going the other way? Convert square kilometers to square miles.

Square miles to square kilometers table

Values either side of 1 mi².

Square miles (mi²)Square kilometers (km²)
-4-10.36
-3.5-9.065
-3-7.77
-2.5-6.475
-2-5.18
-1.5-3.885
-1-2.59
-0.5-1.295
00
0.51.295
12.59
1.53.885
25.18
2.56.475
37.77
3.59.065
410.36
4.511.6549
512.9499
5.514.2449
615.5399

Questions people ask

How many square kilometers are in a square mile?
One square mile equals 2.58998811 square kilometers.
How do I convert square miles to square kilometers by hand?
Multiply the number of square miles by 2.58998811. For a rough check, 2.6 is close enough for most everyday use.
What is 1 square mile in square kilometers?
1 square mile is 2.589988 square kilometers.

Calcuit generates this page from a unit table, so the factors here match every other page on the site.

Cookies on Calcuit
We use essential cookies to remember this choice and, if you sign in, to keep you signed in. Advertising cookies from Google AdSense are optional. They are not set, and the AdSense script is not loaded, unless you accept.