Hectares to Square kilometers Converter
Quick answer: To convert hectares to square kilometers, multiply by 0.01. For example, 10 ha is 0.1 km². One hectare equals 0.01 km².
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Use the Hectares to Square kilometers Converter
Hectares to Square kilometers formula and what each symbol means
km² = ha × 0.01
| Symbol | Meaning |
|---|---|
| ha | Hectare |
| km² | Square kilometer |
Hectares to Square kilometers examples
1 ha
1 ha × 0.01 = 0.01 km².
10 ha
10 ha × 0.01 = 0.1 km².
100 ha
100 ha × 0.01 = 1 km².
Hectares compared with Square kilometers
One km² is 100 times as large as one ha, so your number gets smaller when you convert hectares to square kilometers and bigger when you convert back. If the answer is not smaller than what you typed, you multiplied instead of dividing.
About hectares and square kilometers
Hectare (ha): Exactly 10,000 square metres. Square kilometer (km²): One million square metres.
Where hectares to square kilometers conversions are used
Farming and forestry use hectares and acres for field and plot sizes. Land and property are sold in square metres, square feet, acres or hectares depending on the market.
How to calculate Hectares to Square kilometers step by step
- Enter the value in ha (the starting unit).
- Multiply by 0.01, because 1 ha = 0.01 km².
- The product is the value in km². To go back, divide by 0.01 or multiply by 100.
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How to read your Hectares to Square kilometers result
An acre is exactly 4,046.8564224 m² and a hectare is exactly 10,000 m².
| HECTARES | SQUARE KILOMETERS |
|---|---|
| 1 | 0.01 |
| 2 | 0.02 |
| 5 | 0.05 |
| 10 | 0.1 |
| 20 | 0.2 |
| 50 | 0.5 |
| 100 | 1 |
| 1,000 | 10 |
Square kilometers to Hectares: quick table
| SQUARE KILOMETERS | HECTARES |
|---|---|
| 1 | 100 |
| 5 | 500 |
| 10 | 1,000 |
| 25 | 2,500 |
| 50 | 5,000 |
| 100 | 10,000 |
| 250 | 25,000 |
| 500 | 50,000 |
Common mistakes when calculating Hectares to Square kilometers
- Using the US survey acre where the international acre is intended.
- Dividing when you should multiply: from ha to km² multiply by 0.01; from km² to ha divide by 0.01.
Hectares to Square kilometers FAQ
How many km² are in 1 ha?
1 ha equals 0.01 km².
How many ha are in 1 km²?
1 km² equals 100 ha.
Is 1 ha = 0.01 km² an exact conversion?
Yes. The hectare and the square kilometer are both defined exactly in SI terms, so the ratio has no measurement uncertainty; 0.01 is just that ratio shown to 7 significant figures.
What is a square kilometer (km²)?
One million square metres.
How can I estimate hectares to square kilometers in my head?
One km² is 100 times as large as one ha, so your number gets smaller when you convert hectares to square kilometers and bigger when you convert back. If the answer is not smaller than what you typed, you multiplied instead of dividing.
What is 150 ha in square kilometers?
150 ha = 1.5 km² (since 150 × 0.01).
What is 0.5 ha in square kilometers?
0.5 ha = 0.005 km² (since 0.5 × 0.01).
What is 25 ha in square kilometers?
25 ha = 0.25 km² (since 25 × 0.01).
How many decimals should I keep when converting ha to km²?
Match the precision of your original measurement. For example, 0.1 km² rounds to 0.1 km² at 3 significant figures; keep more digits only for engineering or scientific work.
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Method, review and disclaimer
Edited by: Hemant Kumar and Anjita Rai, founders of ToolsVault (SEO and content professional, not a licensed adviser). Method: this tool runs in your browser using the formula shown on this page; the numbers you enter are not sent to our servers. Sources: NIST SP 811, Appendix B.8: conversion factors