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Hectare to Square mile Converter

Type a value — the answer appears instantly. 1 ha = 0.003861022 mi².

Reviewed by the OmniCalc teamMethod verified 2026-07-01

From unit

To unit
Result

0.003861022 square miles

= 10,000 m²= 107,639 ft²

equals 0.003861022 square miles

Formula: mi² = ha × 0.0038610216

Hectare to Square mile formula

mi² = ha × 0.0038610216

Convert 5 hectares to square miles

  1. Start with 5 hectares.
  2. Multiply by the conversion factor: 5 × 0.00386102 = 0.01930511.
  3. So 5 ha = 0.01930511 mi².

Hectare to Square mile conversion table

Hectare to Square mile conversion table
Hectares (ha)Square miles (mi²)
0.01 ha0.0000386102 mi²
0.1 ha0.0003861022 mi²
0.25 ha0.0009652554 mi²
0.5 ha0.001930511 mi²
1 ha0.003861022 mi²
2 ha0.007722043 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
15 ha0.05791532 mi²
20 ha0.07722043 mi²
25 ha0.09652554 mi²
30 ha0.1158306 mi²
40 ha0.1544409 mi²
50 ha0.1930511 mi²
75 ha0.2895766 mi²
100 ha0.3861022 mi²
250 ha0.9652554 mi²
500 ha1.930511 mi²
1,000 ha3.861022 mi²
5,000 ha19.30511 mi²
10,000 ha38.61022 mi²

Unit definitions

What is a hectare?

The hectare is exactly 10,000 square metres, the area of a 100-metre square. It is the standard metric unit for measuring land, farms, and forests. One hectare is about 2.471 acres.

What is a square mile?

The square mile is the area of a one-mile square, containing 640 acres or about 2.59 square kilometres. It is used for large land areas, counties, and statistical regions in the United States. One square mile is roughly 259 hectares.

Frequently asked questions

How many square miles are in one hectare?

One hectare equals 0.003861022 square miles (1 ha = 0.003861022 mi²).

How do I convert hectares to square miles?

Multiply the value in hectares by 0.00386102. For example, 10 ha × 0.00386102 = 0.03861022 mi².

Which is bigger — a hectare or a square mile?

A square mile is bigger: one square mile contains 258.999 hectares.

Is this hectare to square mile converter free?

Yes — the converter is free, works offline once loaded, and computes instantly in your browser without sending your numbers to a server.

Conversion factors follow international definitions (SI / NIST). Last verified 2026-07-01.