---
title: "1 acre to mi² = 0.0015625 mi²"
description: "1 acre is 0.0015625 square miles. The arithmetic, a table of nearby values, and a converter for any other number."
url: https://atoneplace.net/convert/1-acres-to-square-miles/
site: "At One Place"
---

# 1 acre to mi²

**1 acre in square miles: 1 acre = 0.0015625 mi²**

mi² = acre × 0.0015625

1 acre is 0.0015625 square miles. To get there, multiply by 0.0015625.

## Values either side

*Acres near 1, converted to square miles.*

| Acres | Square miles |
| --- | --- |
| 0.5 acre | 0.0007813 |
| 1 acre ← | 0.0015625 |
| 1.5 acre | 0.0023438 |
| 2 acre | 0.003125 |
| 2.5 acre | 0.0039063 |
| 3 acre | 0.0046875 |

## 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

### What is 1 acre in square miles?

1 acre is 0.0015625 mi².

### How do you convert acres to square miles?

Multiply by 0.0015625.

## Related pages

- [Acres to square miles](https://atoneplace.net/convert/acres-to-square-miles/)
- [1 mi² to acre](https://atoneplace.net/convert/1-square-miles-to-acres/)
- [0.5 acre to mi²](https://atoneplace.net/convert/0-5-acres-to-square-miles/)
- [1.5 acre to mi²](https://atoneplace.net/convert/1-5-acres-to-square-miles/)
- [2 acre to mi²](https://atoneplace.net/convert/2-acres-to-square-miles/)
- [2.5 acre to mi²](https://atoneplace.net/convert/2-5-acres-to-square-miles/)
- [3 acre to mi²](https://atoneplace.net/convert/3-acres-to-square-miles/)

## Sources

- Guide for the Use of the International System of Units (SP 811) — NIST (https://www.nist.gov/pml/special-publication-811) [Public domain (US Government)]
- The International System of Units (SI Brochure) — Bureau International des Poids et Mesures (https://www.bipm.org/en/publications/si-brochure)
- Calculated on this page — At One Place (/about/)