Hectares to Acres (ha to ac) Converter

Hectares to Acres Converter

This tool converts hectares to acres, the two most common large land-area measurements used worldwide in agriculture and real estate.

1 hectare = 2.471 acres. A hectare is roughly 2.5 times larger than an acre. A 100-hectare farm equals about 247 acres — a substantial operation in most countries.

Why Convert

International Land Deals

Buyers and sellers often speak different measurement "languages" — converting bridges the gap.

Agricultural Trade

Global commodity markets and yield comparisons reference both units across regions.

How to Use the Converter

Enter the Value

Type your hectares into the left field of the converter card.

Read the Result

The acre equivalent appears instantly on the right.

Copy or Swap

Copy the result for listings or reports, or swap to convert acres back to hectares.

Quick estimate: multiply hectares by 2.5. For 40 hectares: 40 × 2.5 = 100 acres; the exact answer is 98.8 acres — close enough for a fast comparison.

Converter Features

Instant Real-Time Conversion

The result updates the moment you type. There is no calculate button, so you can compare several values in seconds.

Bidirectional Swap

Press the swap button between the two fields to reverse the direction instantly, without reloading the page or re-typing.

Searchable Unit Picker

Each unit dropdown has a search box, so you can switch to any other area unit and convert in a different direction whenever you need.

One-Click Copy

A copy button sits beside each field. Tap it to send the value straight to your clipboard for reports, listings, or spreadsheets.

Quick Reference & Unit Info

A built-in quick-reference grid and unit info cards show common values and where each unit is used, right below the converter.

Mobile-Optimized Design

Large touch targets and a responsive layout make conversions easy on a phone, whether on-site, in a store, or on the go.

Reference Values

Hectares	Acres
1 ha	2.47 ac
5 ha	12.4 ac
10 ha	24.7 ac
50 ha	124 ac
100 ha	247 ac
1,000 ha	2,471 ac

Frequently Asked Questions

What is the exact conversion from hectares to acres?

1 hectare = 2.47105 acres. For quick calculations, 2.47 or even 2.5 provides sufficient accuracy for most purposes.

How big is a hectare compared to common references?

One hectare is about 2.5 American football fields, or roughly a city block in many European cities. It is 100 m × 100 m — easy to picture as a square.

How do I convert crop yields from per-hectare to per-acre?

Divide the per-hectare yield by 2.47. For example, 10 tonnes/ha ÷ 2.47 = 4.05 tonnes/acre.

What's the average farm size in hectares vs acres?

EU farms average about 17 hectares (42 acres), while US farms average 180 hectares (445 acres). This reflects different agricultural histories and policies.

Are hectares used in the UK?

Officially yes, but many UK farmers still think in acres due to tradition. Agricultural statistics use hectares, while everyday conversation often uses acres.

Hectares to Acres