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Area Converter: Acres, Hectares & Square Units

Convert square units, acres, and hectares.

Convert
Type in either field — the other updates instantly.
Result
1 ac = 0.40468564224 ha
1 ac =

0.40468564224 ha

All units

  • Square millimetermm²4,046,856,422.4
  • Square meterm²4,046.8564224
  • Square footft²43,560
  • Square yardyd²4,840
  • Acreac1
  • Hectareha0.40468564224
  • Square kilometerkm²0.0040468564224

How the Area Converter works

Area units are converted through the square metre. Because area is two-dimensional, square-unit factors are the square of the linear factor; a square foot is 0.3048² = 0.09290304 m².

An acre is defined as exactly 4,046.8564224 m² and a hectare is 10,000 m², the area of a square 100 m on each side.

Formulas used

General
target = value × factor(from) ÷ factor(to)
Acres to hectares
ha = acres × 0.40468564224

How to use the Area Converter in 3 steps

  1. Step 1

    Select the source area unit and the target unit.

  2. Step 2

    Enter the area in either field to convert it both ways.

  3. Step 3

    Swap units or copy values from the full conversion list.

Frequently asked questions

How many acres are in a hectare?

One hectare is about 2.4711 acres, and one acre is about 0.4047 hectares.

How many square feet are in an acre?

Exactly 43,560 square feet, which is about 4,046.86 square metres.