At One Place

Acres to square miles

1 acre in square miles
1 acre = 0.0015625 mi²
mi² = acre × 0.0015625

To convert acres to square miles, multiply by 0.0015625. The table below gives the values people look up most often, and the converter works for any number.

Acres to square miles table

Common acre values converted to square miles.
Acres Square miles
1 acre 0.0015625
2 acre 0.003125
3 acre 0.0046875
4 acre 0.00625
5 acre 0.0078125
10 acre 0.015625
15 acre 0.023438
20 acre 0.03125
25 acre 0.039063
30 acre 0.046875
40 acre 0.0625
50 acre 0.078125
75 acre 0.11719
100 acre 0.15625
250 acre 0.39063
500 acre 0.78125
1,000 acre 1.5625

How the conversion works

The relationship is mi² = acre × 0.0015625. Both units measure area, so the conversion is a fixed factor that never changes.

Common questions

How many square miles are in one acre?
One acre equals 0.0015625 square miles. mi² = acre × 0.0015625.
How do you convert acres to square miles?
Use mi² = acre × 0.0015625. So 10 acre is 0.015625 mi².
How many acres are in one square mile?
One square mile equals 640 acres, which is the reverse of the conversion above.

Related pages

Sources

  1. Guide for the Use of the International System of Units (SP 811) — NIST (Public domain (US Government))
  2. The International System of Units (SI Brochure) — Bureau International des Poids et Mesures
  3. Calculated on this page — At One Place

How these figures are compiled and checked