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Comparison of Area units
Unit
SI
SI base
1 ca
1 m2
1 m2
1 a
1 dam2
102 m2
1 ha
1 hm2
104 m2
100 ha
1 km2
106 m2
non-SI comparisons
non-SI
metric
SI base
0.00386102 sq mi
1 ha
104 m2
2.471 acre
1 ha
104 m2
107,639 sq ft
1 ha
104 m2
A hectare (symbol ha, pronounced /ˈhɛktɛər/) is a unit of area equal to 10,000 square metres (107,639 sq ft), or one square hectometre (100 metres, squared), and is commonly used for measuring land area. Its base unit, the are, was defined by older forms of the metric system, but is no longer part of the modern metric system known as the International System of Units (SI). The International Committee for Weights and Measures (CIPM) classifies the hectare as a unit that is accepted for use with SI.1 Contents 1 History 2 Land Measurement 3 International use 4 Conversions 4.1 Metric 4.2 Imperial units 4.3 Other 5 See also 6 References 7 External links // HistoryThe metric system of measure was first put onto a legal basis in 1795 by the French Revolutionary government. The law of 18 Germinal, Year III (7 April 1795) defined five units of measure:2 The metre for length The are (100 m2) for area [of land] The stere (1 m3) for volume of firewood The litre (1 dm3) for volumes of liquid The gram for massAlthough the law defined the length of the metre, there was no practical way of accurately measuring the metre (and hence the are) until 1799 when the first standard metre was manufactured and adopted. The standard metre remained in the custody of successive French governments until 1875 when, under the Convention of the Metre, its supervision passed into international control under the auspices of the GCPM. At the first meeting of the GCPM in 1889 when a new standard metre, manufactured by Johnson Matthey & Co of London3 was adopted, the are and hectare were automatically redefined. In 1960, when the metric system was updated as the International System of Units (SI), the are had not received international recognition. The CGPM made no mention of the are in its publication, but gave the hectare a qualified recognition. In 2006 the hectare was recognised as a "Non-SI units accepted for use with the International System of Units"4 In 1972, the European Economic Community (EEC) passed directive 71/354/EEC 5 which catalogued the units of measure that might be used within the community. The units that were catalogued replicated the recommendations of the CGPM, supplemented by a few other units including the are (and implicity the hectare) whose use was limited to the measurement of land. Land Measurement Trafalgar Square which has an area of about one hectare.6The hectare is widely used throughout the world1 and is the legal unit of measure in domains concerned with land ownership, land planning, and management, including law (land deeds), agriculture, forestry, and town planning throughout the European Union7, though the United States, Myanmar, and to some extent Canada instead use the Imperial measurement unit of area - the acre (0.404686 ha). Some of the former Ottoman countries and Norway and Botswana use the decare, one tenth of a hectare.citation needed. Even in countries that have undergone a general conversion from traditional English measurements to metric measurements (e.g. Canada), legal descriptions relating to land, which frequently use the acre, have not been converted, as doing so would require a resurvey of the land.citation needed International useThe hectare has been subsequently defined in a number of nations by a country-specific term. In each of the following, the national unit of area has been defined as one hectare:8 jerib in Iran gong qing in mainland China manzana in Argentina bunder in The Netherlands ConversionsOne hectare is equivalent to: Metric 10,000 square metres 0.01 square kilometre 1 square hectometre 10 decares 100 ares 10,000 centiares Imperial units 2.4710538 international acres 2.4710439 U.S. survey acres 107,639 square feet 0.00386102 square miles (statute) Other 15 mǔ (Chinese) 0.15 qǐng 10 dunam or dönüm (Middle East) 10 stremmata (Greece) 6.25 rai (Thai) ≈ 1.008 chō (Japanese) 7.47 bigha (Bangladesh, India, Nepal) See also 1 E+4 m² for further comparisons conversion of units hecto- Hectometre Orders of magnitude References ^ a b Bureau International des Poids et Mesures (2006). The International System of Units (SI). 8th ed.. http://www.bipm.org/utils/common/pdf/si_brochure_8_en.pdf. Retrieved 2008-02-13. Chapter 5. ^ "La loi du 18 Germinal an 3 (The law of 18 Germanial year 3) « la mesure [républicaine de superficie pour les terrains, égale à un carré de dix mètres de côté »"]. Le CIV (Centre d'Instruction de Vilgénis) - Forum des Anciens. http://aviatechno.free.fr/unites/nouveausys.php. Retrieved 2010-03-02. ^ F J Smith. "Standard Kilogram Weights - A Story of Precision Fabrication". http://www.platinummetalsreview.com/pdf/pmr-v17-i2-066-068.pdf. Retrieved 2010-03-05. ^ "SI brochure (Chapter 4)". International Bureau of Weights and Measures. 2006. http://www.bipm.org/en/si/si_brochure/chapter4/table6.html. Retrieved 2010-03-05. ^ "Council Directive of 18 October 1971 on the approximation of laws of the member states relating to units of measurement, (71/354/EEC)". http://eur-lex.europa.eu/Notice.do?mode=dbl&lang=en&lng1=en,nl&lng2=da,de,el,en,es,fr,it,nl,pt,&val=22924:cs&page=1&hwords=. Retrieved 2009-02-07. ^ http://www.official-documents.gov.uk/document/hc0506/hc16/1631/1631.pdf "DEPARTMENT FOR ENVIRONMENT, FOOD AND RURAL AFFAIRS, AND RURAL PAYMENTS AGENCY; The Delays in Administering the 2005 Single Payment Scheme in England"]. National Audit Office. 2006-10-18. http://www.official-documents.gov.uk/document/hc0506/hc16/1631/1631.pdf. Retrieved 2010-02-24. ^ The Council of the European Communities (2009-05-27). "Council Directive 80/181/EEC of 20 December 1979 on the approximation of the laws of the Member States relating to Unit of measurement and on the repeal of Directive 71/354/EEC". http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=CONSLEG:1980L0181:20090527:EN:PDF. Retrieved 2010-01-29. ^ Britannica, unit of measurement, accessed 2009-10-30 External links Official SI website: Table 6. Non-SI units accepted for use with the International System of Units Agricultural Measurements and Conversionshectare: Definition from Answers.com hectare ( ) n. ( Abbr. ha ) A metric unit of area equal to 100 ares (2.471 acres) www.answers.com/topic/hectare Use of Garden City lands could go to referendum others also read... Sports fields? Community gardens? Swimming pools and a stadium? A golf course? There’s no shortage of ideas for how to use the 55-hectare Garden City lands, but three council members suggest an excellent way to gauge public opinion would be through a referendum. biogas production This adds 14 400 km to the driving distance or 64 percent better than producing only ethanol all according to research published by the German Ministry of Agriculture Source FNR Germany LOGGERS DESTROY 162 HECTARES IN MONARCH-BUTTERFLY PRESERVE.: An article from: SourceMex Economic News & Analysis on Mexico Thomson Gale hectare - Wiktionary hectares. hectare (plural hectares) A unit of surface area (symbol ha) equal to 100 ares (that is, 10,000 square metres, one hundredth of a square ... en.wiktionary.org/wiki/hectare Deal in the works with Kuwait firm on Clark tagged ‘stupid’ From the Americans to the Kuwaitis. That, in sum, is how control of the Diosdado Macapagal International Airport (DMIA) and the rest of the 2,500-hectare civil aviation complex here will play out, when plans allegedly steered by Trade Secretary Peter Favila and Batangas Rep. Hermilando Mandanas materialize. ipho red jpg Date 7 18 2006 Hectare Photo of IPhO 2005 shown by Prof Waldemar Gorzkowski during his speeches Date 7 7 2005 Photo of IPhO 2005 shown by Prof Waldemar Gorzkowski during his speeches how much land make up a hectare? WHAT IS A HECTARE OF LAND? 1 hectare is 100m long x 100m large = 10,000 square meter 1 hectare = 2.471044 acres 1 hectare is enough space to build a house with a garden answers.yahoo.com/question/ Protests mar groundbreaking for US arena NEW YORK - Officials broke ground Thursday on a much-delayed 22-acre (9-hectare) development project that will... The Sizesaurus -- From Hectares to Decibels to Calories, a Witty Compendium of Measurements Kodansha America hectare (unit of measurement) -- Britannica Online Encyclopedia Britannica online encyclopedia article on hectare (unit of measurement), unit of area in the metric system equal to 100 ares, or 10,000 square metres, and the ... www.britannica.com/EBchecked/ Panvel airport plans delayed The final decision on the proposed airport at Panvel, 35 kms from Mumbai, has been put off once again. At a meeting called by the Ministry of Environment and Forest (MoEF) in New Delhi on Thursday, Union Minister Jairam Ramesh told the Maharashtra government to submit the Environment Impact Assessment Report (EIA) for the 1,140-hectare airport by end of August. hectare: Information from Answers.com hectare (abbreviated `ha') a unit of surface area equal to 100 ares (or 10,000 square meters) www.answers.com/topic/ Protests mar groundbreaking for US arena NEW YORK (AP) — Officials broke ground Thursday on a much-delayed 22-acre (9-hectare) development project that will bring the Nation Basketball Association New Jersey Nets to Brooklyn. The Sizesaurus : From Hectares to Decibels to Calories, a Witty Compendium of Me Kodansha America, Incorporated, New York, NY, U.S.A. Hectare - Definition and More from the Free Merriam-Webster ... Definition of hectare from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games. www.merriam-webster.com/ Relevant Links Also, he said African agriculture is "hungry" as it receives only 14.6kg of fertilizer per hectare, against 114.3kg per hectare for all developing countries. Hectare | Define Hectare at Dictionary.com Hectare - Define Hectare at Dictionary.com a free online dictionary with pronunciation, synonyms, and translation of Hectare. Look it up now! dictionary.reference.com/ Pro-Friends confident on real estate industry in 2010 Property Company of Friends, Inc. (Pro-Friends), the leading property developer in Cavite since 2006, expressed confidence on 2010 prospects for the real estate industry, as it looks forward to adding estate developments to its current roster of sizeable properties that include the 200-hectare Lancaster Estates that span Imus, Kawit AND Gen. Trias and the 110-hectare Bellefort Estates in Molino ... tendancefevrier08 jpg 02 Jun 2008 17 48 38K campagne jpg 25 Sep 2008 13 02 36K fertilisation hectar > 09 Jul 2009 14 19 32K tendances septembre gif 02 Jan 2008 09 57 28K ![]() ISO 5682-3:1996, Equipment for crop protection - Spraying equipment - Part 3: Test method for volume/hectare adjustment systems of agricultural hydraulic pressure sprayers Multiple. Distributed through American National Standards Institute (ANSI) Commercial Industrial Real Estate, Hectare GMAC Real Estate ... Commercial Industrial Real Estate, Hectare GMAC Real Estate, Brokerage Commercial Division ~ 905-624-4455 www.hectare.com/index.php Magic bash Bulls for 7th straight victory ORLANDO, Fla. (AP) Dwight Howard insists he didn't intend to hurt Derrick Rose. He was just protecting the basket. So when Rose drove the lane hard and tried to finish over the towering center for the second time this season, the man who goes by "Superman" again delivered on his nickname. La propietaria de 5 mil hectáreas en Guanajuato reina sobre una inmensa zona arqueológica.(TT: The owner of 5000 hectares reins over inmense archaeological site.): An article from: Proceso CISA Comunicacion e Informacion, S.A. de C.V. $20m mega-tennis centre plan for former Geelong Golf Club site THE former Geelong Golf Club site could house a $20 million state-of-the-art tennis centre and academy under an ambitious plan unveiled yesterday. Miles de hectáreas para la paz: La zona desmilitarizada de la esperanza.(TT: Thousand of hectares for peace: demilitarized zone of hope.): An article from: Semana Spanish Publications, Inc. Huge development to create two Melton suburbs
The former "thoroughbred country" of Melton is a step closer to becoming part of metropolitan Melbourne. | ||