---
title: "Hectares to Square kilometers — ha to km² converter"
description: "1 hectare = 0.01 square kilometers. Convert hectares to square kilometers with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/hectares-to-square-km/
site: "At One Place"
---

# Hectares to square kilometers

**1 hectare in square kilometers: 1 ha = 0.01 km²**

km² = ha × 0.01

To convert hectares to square kilometers, multiply by 0.01. The table below gives the values people look up most often, and the converter works for any number.

## Hectares to square kilometers table

*Common hectare values converted to square kilometers.*

| Hectares | Square kilometers |
| --- | --- |
| 1 ha | 0.01 |
| 2 ha | 0.02 |
| 3 ha | 0.03 |
| 4 ha | 0.04 |
| 5 ha | 0.05 |
| 10 ha | 0.1 |
| 15 ha | 0.15 |
| 20 ha | 0.2 |
| 25 ha | 0.25 |
| 30 ha | 0.3 |
| 40 ha | 0.4 |
| 50 ha | 0.5 |
| 75 ha | 0.75 |
| 100 ha | 1 |
| 250 ha | 2.5 |
| 500 ha | 5 |
| 1,000 ha | 10 |

## How the conversion works

The relationship is km² = ha × 0.01. Both units measure area, so the conversion is a fixed factor that never changes.

## Common questions

### How many square kilometers are in one hectare?

One hectare equals 0.01 square kilometers. km² = ha × 0.01.

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

Use km² = ha × 0.01. So 10 ha is 0.1 km².

### How many hectares are in one square kilometer?

One square kilometer equals 100 hectares, which is the reverse of the conversion above.

## Related pages

- [Square kilometers to Hectares](https://atoneplace.net/convert/square-km-to-hectares/)
- [Hectares to Square meters](https://atoneplace.net/convert/hectares-to-square-meters/)
- [Hectares to Acres](https://atoneplace.net/convert/hectares-to-acres/)
- [Hectares to Square feet](https://atoneplace.net/convert/hectares-to-square-feet/)
- [Hectares to Square miles](https://atoneplace.net/convert/hectares-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/)