📐 Area

Convert acres to square miles

1 ac = 0.0015625 mi². Convert acres to square miles instantly with the converter below.

Value

Result —

How to convert

Divide the value (ac) by 640 to get mi² — example: 5 ac = 0.0078125 mi²

Conversion table

Acres to square miles conversion table
Acre	Square mile
1 ac	0.0015625 mi²
2 ac	0.003125 mi²
5 ac	0.0078125 mi²
10 ac	0.015625 mi²
20 ac	0.03125 mi²
25 ac	0.0390625 mi²
50 ac	0.078125 mi²
100 ac	0.15625 mi²
250 ac	0.390625 mi²
500 ac	0.78125 mi²
1,000 ac	1.5625 mi²

About the units

Acre — symbol ac.
Square mile — symbol mi².

Frequently asked questions

How many square miles are in 1 acre?

1 ac = 0.0015625 mi².

How do I convert acres to square miles?

Divide the value (ac) by 640 to get mi².

How many acres are in 1 square mile?

1 mi² = 640 ac.

Is the conversion accurate?

Yes. It uses the standard international conversion factors and runs entirely in your browser, uploading no data.

Related conversions

Reverse: square miles to acres

Acres to other units

acres to square centimeters acres to square meters acres to square kilometers acres to hectares acres to feddans acres to square feet acres to square inches acres to square yards

Other units to square miles

square centimeters to square miles square meters to square miles square kilometers to square miles hectares to square miles feddans to square miles square feet to square miles square inches to square miles square yards to square miles

All Area conversions · The full tool in Zayenha Tools