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Acres to Hectares Converter

1 acre = 0.4046856422 hectares. To convert ac to ha, multiply by 0.4046856422, or divide by 2.471053815.

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1 ac = 0.4047 ha

1 ac
0.4047 ha
1 ha
2.4711 ac
10 ac
4.0469 ha
100 ac
40.4686 ha

How to convert Acres to Hectares

1 acre equals 0.4046856422 hectares, so the conversion is a single multiplication.

ha = ac × 0.4046856422

Example: 2 ac × 0.4046856422 = 0.8094 ha.

About the acre and the hectare

Acre (ac)

An acre is 43,560 square feet, about 4,047 m² or 0.405 hectares. It's the standard unit for land in the US.

Hectare (ha)

A hectare is 10,000 m², a square 100 meters on each side. It's the metric unit for land and farms.

1 acre in every area unit

Square Feet43,560 sq ft
Square Meters4,046.856 m²
Hectares0.4047 ha
Square Kilometers0.004047 km²
Square Miles0.001563 sq mi
Square Yards4,840 sq yd
Square Inches6,272,640 sq in
Square Centimeters40,468,564.224 cm²
Square Millimeters4,046,856,422.4 mm²
Ares40.469 a
Hectares to AcresReverse conversionAcres to Square Feet1 ac = 43,560 sq ftSquare Feet to Acres1 sq ft = 0.00002296 ac

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Acres to Hectares FAQ

How many hectares are in a acre?

1 acre = 0.4046856422 hectares.

How many acres are in a hectare?

1 hectare = 2.471053815 acres.

How do I convert ac to ha?

Use ha = ac × 0.4046856422. For example, 10 ac = 4.047 ha.

Can I print this Acres to Hectares chart?

Yes. Use "Print / Save PDF" next to the converter for a one-page chart, or "Download CSV" to open it in Excel or Google Sheets.