1 acre to square miles
1 ac = 0.0015625 mi². Change the amount below, or read the formula and the reference table further down.
1 acre equals
square miles
1 ac = 0.0015625 mi²
The formula
Acres and square miles both measure area from the same zero, so a single multiplier does the job.
mi² = ac × 0.0015625
Going the other way? Convert square miles to acres.
Acres to square miles table
Values either side of 1 ac.
| Acres (ac) | Square miles (mi²) |
|---|---|
| -4 | -0.00625 |
| -3.5 | -0.005469 |
| -3 | -0.004688 |
| -2.5 | -0.003906 |
| -2 | -0.003125 |
| -1.5 | -0.002344 |
| -1 | -0.001563 |
| -0.5 | -0.000781 |
| 0 | 0 |
| 0.5 | 0.000781 |
| 1 | 0.001563 |
| 1.5 | 0.002344 |
| 2 | 0.003125 |
| 2.5 | 0.003906 |
| 3 | 0.004688 |
| 3.5 | 0.005469 |
| 4 | 0.00625 |
| 4.5 | 0.007031 |
| 5 | 0.007813 |
| 5.5 | 0.008594 |
| 6 | 0.009375 |
Questions people ask
- How many square miles are in a acre?
- One acre equals 0.0015625 square miles.
- How do I convert acres to square miles by hand?
- Multiply the number of acres by 0.0015625. For a rough check, 0.002 is close enough for most everyday use.
- What is 1 acre in square miles?
- 1 acre is 0.0015625 square miles.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.