Acres to Hectares

What is the Acres to Hectares Converter?

This tool converts acres to hectares, enabling US farmers and landowners to express their land in the international metric standard.

Why Convert to Hectares?

While acres work perfectly for domestic purposes, hectares are essential when:

• Exporting agricultural products — international buyers expect metric data
• Filing international reports — UN, FAO, and other organizations use hectares
• Participating in carbon credit programs — often require metric measurements
• Selling to foreign investors — presenting land in familiar terms

The Conversion

1 acre = 0.4047 hectares

This means roughly 2.5 acres equal 1 hectare. A typical 160-acre US farm quarter section equals about 65 hectares, while a 640-acre section equals 259 hectares.

International Perspective

Converting to hectares also helps compare US agriculture with global counterparts. The average US farm (445 acres = 180 ha) is much larger than farms in Europe, Asia, or Africa, where most operations are under 5 hectares.

How to Use

1. Enter acres — type your farm or land size
2. View hectares — the metric equivalent appears instantly
3. Use the result — for reports, sales, or documentation

Common US Farm Sizes in Hectares

Converting standard US land divisions:

• 40 acres = 16.2 hectares — quarter of a quarter section
• 80 acres = 32.4 hectares — "eighty" (half a quarter)
• 160 acres = 64.7 hectares — quarter section
• 320 acres = 129.5 hectares — half section
• 640 acres = 259 hectares — full section (1 square mile)

Yield Conversion Tip

To convert yields from bushels/acre to metric tonnes/hectare, you'll need both this converter and a bushel weight conversion — but knowing your land in hectares is the first step.

Reverse Conversion

Click the swap button (↔) to convert hectares back to acres.

Converter Features

Instant Real-Time Conversion

See hectare equivalents as you enter acreage. Convert farm data for international reports instantly.

Bidirectional Conversion

Switch between acres and hectares with one click. Work in whichever unit your data requires.

One-Click Copy

Copy metric results for international submissions, scientific papers, or global agricultural databases.

US to Metric Farm Reference

Common US land divisions in hectares:

• 40 acres (16.2 ha) - Small family farm
• 160 acres (64.7 ha) - Quarter section
• 320 acres (129.5 ha) - Half section
• 640 acres (259 ha) - Full section

Mobile-Optimized Design

Convert acreage to hectares on your phone when completing international forms or reports in the field.

Frequently Asked Questions

How do I convert acres to hectares?

Multiply acres by 0.4047, or divide by 2.471. For example, 100 acres × 0.4047 = 40.47 hectares.

Why do international reports require hectares?

The UN Food and Agriculture Organization (FAO) and most scientific journals use the metric system. Hectares allow consistent global comparisons of agricultural productivity.

What's the quick mental math for acres to hectares?

Multiply by 0.4 (or divide by 2.5). For 100 acres: 100 × 0.4 = 40 hectares. The exact answer is 40.47 ha—close enough for estimates.

How do I report crop yields in metric?

Convert your acreage to hectares, then divide total production by hectares. Report as kg/ha or tonnes/ha for international comparability.

Do carbon credit programs accept acres?

Most international programs require metric measurements. Convert your acreage to hectares before submitting applications to ensure compliance.

Is this conversion exact?

Yes, this converter uses the precise factor: 1 acre = 0.40468564224 hectares. Results are mathematically exact for any level of precision needed.