---
title: "300 mi² to km² = 776.9964 km²"
description: "300 square miles is 776.9964 square kilometers. The arithmetic, a table of nearby values, and a converter for any other number."
url: https://atoneplace.net/convert/300-square-miles-to-square-km/
site: "At One Place"
---

# 300 mi² to km²

**300 square miles in square kilometers: 300 mi² = 776.9964 km²**

km² = mi² × 2.58998811

300 square miles is 776.9964 square kilometers. To get there, multiply by 2.58998811.

## Values either side

*Square miles near 300, converted to square kilometers.*

| Square miles | Square kilometers |
| --- | --- |
| 180 mi² | 466.1979 |
| 200 mi² | 517.9976 |
| 212 mi² | 549.0775 |
| 250 mi² | 647.497 |
| 300 mi² ← | 776.9964 |
| 350 mi² | 906.4958 |
| 400 mi² | 1,035.9952 |
| 500 mi² | 1,294.9941 |
| 750 mi² | 1,942.4911 |

## How the conversion works

The relationship is km² = mi² × 2.58998811. Both units measure area, so the conversion is a fixed factor that never changes.

## Common questions

### What is 300 mi² in square kilometers?

300 mi² is 776.9964 km².

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

Multiply by 2.58998811.

## Related pages

- [Square miles to square kilometers](https://atoneplace.net/convert/square-miles-to-square-km/)
- [300 km² to mi²](https://atoneplace.net/convert/300-square-km-to-square-miles/)
- [180 mi² to km²](https://atoneplace.net/convert/180-square-miles-to-square-km/)
- [200 mi² to km²](https://atoneplace.net/convert/200-square-miles-to-square-km/)
- [212 mi² to km²](https://atoneplace.net/convert/212-square-miles-to-square-km/)
- [250 mi² to km²](https://atoneplace.net/convert/250-square-miles-to-square-km/)
- [350 mi² to km²](https://atoneplace.net/convert/350-square-miles-to-square-km/)
- [400 mi² to km²](https://atoneplace.net/convert/400-square-miles-to-square-km/)
- [500 mi² to km²](https://atoneplace.net/convert/500-square-miles-to-square-km/)
- [750 mi² to km²](https://atoneplace.net/convert/750-square-miles-to-square-km/)

## 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/)