Hectares to Ares
Convert hectares to ares instantly. 1 ha = 100 a. Includes the exact factor, a conversion table of common values and the definition of both units.
How to convert hectares to ares
To convert hectares to ares, multiply by 100. The relationship is fixed, so the same factor works for any quantity — there is nothing to look up and nothing that changes with temperature, location or context.
a = ha × 100
Hectares to Ares conversion table
The values people look up most often, rounded for reading. Use the calculator above for anything in between.
| Hectares | Ares |
|---|---|
| 1 ha | 100 a |
| 2 ha | 200 a |
| 3 ha | 300 a |
| 5 ha | 500 a |
| 10 ha | 1,000 a |
| 20 ha | 2,000 a |
| 25 ha | 2,500 a |
| 50 ha | 5,000 a |
| 100 ha | 10,000 a |
| 500 ha | 50,000 a |
| 1,000 ha | 100,000 a |
What is a hectare?
10,000 square metres, or about 2.471 acres. The global standard for farmland.
What is a are?
100 square metres, the root of the hectare. Still used in some European land records.
The formula
a = ha × 100
Every result on this page comes from this formula. Nothing is rounded until the final display, so figures match a spreadsheet to the cent.
How to use the Hectares to Ares
- Type the number of hectares you want to convert.
- Read the result in ares straight away — there is no button to press.
- Check the table below for the values that come up most often, or reverse the conversion with the linked ares to hectares page.
Hectares to Ares — frequently asked questions
How many ares are in a hectare?
One hectare equals 100 a. a = ha × 100
What is the formula to convert hectares to ares?
The formula is a = ha × 100. It is an exact definition rather than an approximation, so the conversion never drifts no matter how large the number.
How do I convert ares back to hectares?
Divide instead of multiplying: one are is 0.01 ha. The reverse converter is linked in the related tools list.
Is this conversion exact?
Yes. Both units are defined against the same base unit by international agreement, so the factor is exact — any rounding you see is only in the display, which you can widen by entering more decimal places.
Is this hectares to ares free to use?
Yes. Every calculator on the site is free, needs no sign-up, and runs entirely in your browser, so your figures never leave your device.
What people search for
This page answers each of these searches. They are the exact phrases visitors use to find the hectares to ares.
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About this calculator
Written and reviewed by The Samsung Calculator editorial team. Every calculator is written against a published formula, reviewed against at least one independent reference implementation, and dated when it changes.
Last reviewed August 15, 2026 · Calculation runs client-side · No data collected · Report an error