Instant Conversions

Area Converter

Q: What is the difference between hectare, acre, and alqueire?

Hectare (10,000 m²) is the standard metric measurement. Acre (4,046.86 m²) is imperial. Alqueire is a traditional Brazilian measurement that varies by region (Paulista: 24,200 m²; Mineiro: 48,400 m²).

Q: How to convert square meters (m²) to square kilometers (km²)?

To convert m² to km², divide the value by 1,000,000. The tool automates this calculation.

Q: Is it possible to use decimals in the conversion?

Yes, the tool accepts decimal values (with comma or point) and displays results with high precision.

Q: When is the unit 'are' used?

The are (a) is equivalent to 100 m² and is used in the registration of subdivisions, mainly in Europe. 1 hectare = 100 ares.

Quickly convert between hectares, acres, square meters, square kilometers, and alqueires. Essential for architecture, agribusiness, and real estate.

Use Cases

• Sizing land and rural properties.
• Converting maps and architectural plans.
• Calculating planting and pasture areas.
• Negotiating real estate with different measurement standards.

Related Tools

For other conversions, see also:

Valor a converter*

Informe a área na unidade selecionada. Aceitamos vírgula ou ponto para decimais.

Unidade de origem

Referências de escala

1 hectare = 10.000 m² ≈ 2,471 acres.
1 acre = 4.046,86 m², equivalente a cerca de 0,4047 hectare.
1 km² corresponde a 100 hectares ou 247,105 acres.

Agrarian Measurements in Brazil and Worldwide

Measuring land has always been crucial for agriculture and property registration. While the hectare (ha) is the international standard, Brazil still uses historical measurements like the alqueire. The complexity is that the alqueire does not have a fixed value: the Alqueire Paulista has 24,200 m², the Alqueire Mineiro (or Goiano) has 48,400 m², and the Alqueire do Norte has 27,225 m². Our converter includes the two main ones to facilitate land negotiations in different states.

Table of Common Equivalencies

Unit	Equivalence in m²	Note
1 Hectare (ha)	10.000 m²	Padrão internacional
1 Acre	4.046,86 m²	Usado nos EUA/Reino Unido
1 Alqueire Paulista	24.200 m²	2,42 hectares
1 Alqueire Mineiro	48.400 m²	4,84 hectares

Frequently Asked Questions

Get your questions answered about area unit conversion.

What is the difference between hectare, acre, and alqueire?+

The hectare (ha) is the standard metric measurement, equal to 10,000 m². The acre is an imperial measurement (used in the USA) of 4,046.86 m². The alqueire is a traditional Brazilian measurement that varies by region (e.g., Alqueire Paulista = 24,200 m²; Alqueire Mineiro = 48,400 m²).

How to convert square meters (m²) to square kilometers (km²)?+

Simply divide the value in square meters by 1,000,000. For example, 500,000 m² is equivalent to 0.5 km². The calculator does this and also shows the result in other units.

Is it possible to use decimals in the conversion?+

Yes. Enter the values with a comma or decimal point. The results are displayed with high precision to ensure accuracy in engineering, surveying, or geoprocessing projects.

When is the unit 'are' used?+

The are (a) corresponds to 100 m² and is often used in the registration of subdivisions and urban areas in Europe. One hectare contains 100 ares. It is a useful unit for fractioning hectares.