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Hectares to Acres

1 hectare = 2.4711 acres · 1 ac = 0.40469 ha

1 hectare = 2.4711 acres

How it’s calculated

ac = ha × 2.471053815

  • Multiply the value in hectares by 2.471053815.
  • To go back, divide by 2.471053815 (or multiply by 0.4046856422).
  • 1 ha = 2.471053815 ac · 1 ac = 0.4046856422 ha
Show worked solutionFactor, unit cancellation and rounding, step by step

  1. Find the conversion factor

    By definition 1 ha = 10000 m² and 1 ac = 4046.8564224 m², so 1 ac = 0.40468564224 ha. Source: BIPM SI Brochure (9th ed.); NIST SP 811 / Handbook 44.

  2. Multiply by the factor written as a fraction

    Put ha in the denominator so it cancels, leaving ac.

  3. Calculate (unrounded)

  4. Round the answer

    Rounded to 5 significant figures.

Answer: 2.4711 ac

1 ha in other units

Batch convert ha → ac
Results
  1. 1 ha = 2.4711 ac
  2. 5 ha = 12.355 ac
  3. 10 ha = 24.711 ac
  4. 25 ha = 61.776 ac

Permanent link to this conversion

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Quick examples

  • 1 hectare = 2.4711 acres
  • 5 hectares = 12.355 acres
  • 10 hectares = 24.711 acres
  • 25 hectares = 61.776 acres
  • 100 hectares = 247.11 acres

About these units

Hectare (ha)

metric (non-SI)

Exactly 10 000 m² (a square 100 m on each side).

1 ha = 10000 m²

Source: BIPM SI Brochure (9th ed.)

Acre (ac)

US & imperial (identical)

International acre, exactly 4 046.856 422 4 m² (43 560 ft²).

1 ac = 4046.856422 m²

Source: NIST SP 811 / Handbook 44

Hectares to acres conversion table

hectare (ha) to acre (ac)
Hectares (ha)Acres (ac)
0.1 ha0.24711 ac
0.5 ha1.2355 ac
1 ha2.4711 ac
2 ha4.9421 ac
3 ha7.4132 ac
4 ha9.8842 ac
5 ha12.355 ac
6 ha14.826 ac
7 ha17.297 ac
8 ha19.768 ac
9 ha22.239 ac
10 ha24.711 ac
15 ha37.066 ac
20 ha49.421 ac
25 ha61.776 ac
30 ha74.132 ac
40 ha98.842 ac
50 ha123.55 ac
75 ha185.33 ac
100 ha247.11 ac
250 ha617.76 ac
500 ha1,235.5 ac
1,000 ha2,471.1 ac

Related conversions

Frequently asked questions

How do I convert hectares to acres?

Use ac = ha × 2.471053815. Multiply the value in hectares by 2.471053815.

How many acres are in 1 hectare?

1 hectare (ha) equals 2.4711 acres (ac); more precisely 2.471053815.

How many hectares are in 1 acre?

1 acre (ac) equals 0.40469 hectares (ha); more precisely 0.4046856422.

What is 10 ha in ac?

10 hectares = 24.711 acres.

What is a hectare?

Exactly 10 000 m² (a square 100 m on each side).

What is a acre?

International acre, exactly 4 046.856 422 4 m² (43 560 ft²).

Formula: ac = ha × 2.471053815. Factors last reviewed 2026-10-27.