How do I convert acres to hectares?

To convert acres to hectares, use our converter above. Area conversions involve squared units, so the conversion factors are the square of linear unit conversions.

What is the difference between metric and imperial area units?

Metric uses square meters and hectares. Imperial uses square feet, acres, and square miles. One acre equals about 4,047 square meters or 0.4 hectares.

How accurate are these area conversions?

Our conversions are accurate to at least 6 decimal places. For large areas like land parcels, we support hectares, acres, and square kilometers with precise conversion factors.

Acre to Hectare Converter

Convert Acres to Hectares instantly

From

Result

0ha

Hectare

Conversion Formula

Hectare = Acre × 0.404686

Where:

ac = Acre
ha = Hectare

What is a Acre?

The acre (ac) is a unit of area in the imperial system of measurement.

What is a Hectare?

The hectare (ha) is a unit of area in the metric system of measurement.

How to Convert Acre to Hectare

Convert acres to hectares instantly

Quick Reference:

1 ac = 0.404686 ha
1 ha = 2.471052 ac

Common Acre to Hectare Conversions

1 ac
= 0.40 ha

5 ac
= 2.02 ha

10 ac
= 4.05 ha

25 ac
= 10.12 ha

50 ac
= 20.23 ha

100 ac
= 40.47 ha

Conversion Reference Table

Acre (ac)	Hectare (ha)
1	0.4047
2	0.8094
3	1.2141
4	1.6187
5	2.0234
10	4.0469
15	6.0703
20	8.0937
25	10.1172
50	20.2343
75	30.3515
100	40.4686
250	101.1715
500	202.343
1,000	404.686

Quick reference table showing common acres to hectares conversions.

Real-World Area Conversions

🏠

Real Estate and Housing

Property listings show square footage (US) or square meters (international). A typical 3-bedroom house is 1,500-2,000 sq ft (139-186 m²).

🌾

Land and Agriculture

Farmland is measured in acres (US) or hectares (metric). A football field is about 1.32 acres or 0.53 hectares. Large farms span hundreds or thousands of acres.

🏗️

Flooring and Carpeting

Calculating how much flooring material to buy for rooms. Carpet is sold by square yard, while tile and hardwood use square feet or square meters.

🎨

Painting and Wall Coverage

Paint coverage is specified per gallon (350-400 sq ft) or per liter (10-12 m²). Converting room wall areas helps estimate paint quantities needed.

🧵

Fabric and Textiles

Fabric is sold by the yard (linear) but coverage depends on width. Quilting, upholstery, and sewing projects require area calculations in square inches or square meters.

⚽

Parks and Recreation

City parks, golf courses, and sports facilities measure areas in acres or hectares. A standard soccer field is about 1.76 acres (0.71 hectares).

Area Conversion FAQs

Common Conversion Mistakes

⚠Confusing the direction of conversion — always check whether you are converting from Acre to Hectare or vice versa.
⚠Rounding too early in multi-step calculations. Keep full precision until the final result.
⚠Using outdated or approximate conversion factors. Our converter uses values traceable to international measurement standards.

Sources & Standards

Conversion factors on this page are based on definitions from the International Bureau of Weights and Measures (BIPM) and the National Institute of Standards and Technology (NIST). All factors are accurate to at least 6 decimal places.

Last updated: November 27, 2025