Arroba. Conversion Chart

This conversion page features historical units (ancient, medieval, etc.) that are mostly no longer in use. If you are looking for units of area that are used today, including many national units of various countries, please switch to our main volume conversion page.
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1This is a conversion chart for arroba (Old Spanish Liquid Measure). To switch the unit simply find the one you want on the page and click it.
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Metric

We only include several basic units here for you to convert historical units to contemporary ones. A more comprehensive list of metric units is available on the main volume conversion page.
arroba to cubic meter (m³)
arroba to cubic centimeter (cc)
arroba to cubic millimeter (mm³)
arroba to liter (l)
arroba to milliliter (ml)
Units: cubic meter (m³)  / cubic centimeter (cc)  / cubic millimeter (mm³)  / liter (l)  / milliliter (ml)
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U.S. Measure

We only include several basic units here for you to convert historical units to contemporary ones. A more comprehensive list of U.S. units is available on the main volume conversion page.
arroba to barrel (liquid)
arroba to barrel (dry)
arroba to bushel (bu)
arroba to gallon (liquid) (gal)
arroba to gallon (dry) (gal)
arroba to pint (liquid) (pt)
arroba to pint (dry) (pt)
arroba to fluid ounce (oz)
Units: barrel (liquid)  / barrel (dry)  / bushel (bu)  / gallon (liquid) (gal)  / gallon (dry) (gal)  / pint (liquid) (pt)  / pint (dry) (pt)  / fluid ounce (oz)
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Ancient Greeek (Attic) Dry Measure

Greeks mostly used dry capacity units to measure grain. The basic capacity unit was the kyathos. As most ancient measures these units changed over time and varied across different regions of Grece.
arroba to medimnos (μέδιμνος)
arroba to hekteus (ἑκτεύς, a sixth of a medimnos)
arroba to hēmiekton (ἡμίεκτον)
arroba to choinix (χοῖνιξ)
arroba to xestēs (ξέστης, Roman sextarius)
arroba to kotylē or hēmina (κοτύλη, ἡμίνα)
arroba to oxybathon (ὀξυβαθον)
arroba to kyathos (κύαθος)
arroba to kochliarion (κοχλιάριον)
Units: medimnos (μέδιμνος)  / hekteus (ἑκτεύς, a sixth of a medimnos)  / hēmiekton (ἡμίεκτον)  / choinix (χοῖνιξ)  / xestēs (ξέστης, Roman sextarius)  / kotylē or hēmina (κοτύλη, ἡμίνα)  / oxybathon (ὀξυβαθον)  / kyathos (κύαθος)  / kochliarion (κοχλιάριον)
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Ancient Greek (Attic) Liquid Measure

A common unit in both liquid and dry capacity throughout historic Greece was the cotyle or cotyla whose absolute value varied from one place to another between 210 ml and 330 ml.
arroba to metrētēs (μετρητής, amphora)
arroba to keramion (κεράμιον, Roman amphora)
arroba to chous (χοῦς)
arroba to xestēs (ξέστης, Roman sextarius)
arroba to kotylē, tryblion or hēmina (κοτύλη, τρύβλιον, ἡμίνα)
arroba to tetarton, hēmikotylē (τέταρτον, ἡμικοτύλη)
arroba to oxybathon (ὀξυβαθον)
arroba to kyathos (κύαθος)
arroba to konchē (κόγχη)
arroba to mystron (μύστρον)
arroba to chēmē (χήμη)
arroba to kochliarion (κοχλιάριον, spoon)
Units: metrētēs (μετρητής, amphora)  / keramion (κεράμιον, Roman amphora)  / chous (χοῦς)  / xestēs (ξέστης, Roman sextarius)  / kotylē, tryblion or hēmina (κοτύλη, τρύβλιον, ἡμίνα)  / tetarton, hēmikotylē (τέταρτον, ἡμικοτύλη)  / oxybathon (ὀξυβαθον)  / kyathos (κύαθος)  / konchē (κόγχη)  / mystron (μύστρον)  / chēmē (χήμη)  / kochliarion (κοχλιάριον, spoon)
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Ancient Roman Measure (Liquid and Dry)

Roman jar (amphora quadrantal) was the main unit to measure both liquids and dry substances in Roman empire. It was defined to be equal to one cubic pes (Roman foot). The weight of water to fill the amphora was roughly equal to one Greek talent, an ancient unit of weight.
arroba to culeus (hose)
arroba to amphora quadrantal (Roman jar, bushel)
arroba to urna (urn)
arroba to modius castrensis (military modius)
arroba to modius (peck)
arroba to semimodius (half of a modius)
arroba to congius (a half-pes cube)
arroba to sextarius (a sixth)
arroba to hemina (pint)
arroba to cotyla (cup)
arroba to triens (one third of a sextarius)
arroba to quartarius (quart, forth part)
arroba to sextans (one sixth of a sextarius)
arroba to acetabulum (small cup)
arroba to cyathus (shot or dose)
arroba to ligula (spoonful)
Units: culeus (hose)  / amphora quadrantal (Roman jar, bushel)  / urna (urn)  / modius castrensis (military modius)  / modius (peck)  / semimodius (half of a modius)  / congius (a half-pes cube)  / sextarius (a sixth)  / hemina (pint)  / cotyla (cup)  / triens (one third of a sextarius)  / quartarius (quart, forth part)  / sextans (one sixth of a sextarius)  / acetabulum (small cup)  / cyathus (shot or dose)  / ligula (spoonful)
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Biblical and Talmudic Dry Measure (Old Testament)

Israelite capacity measure tightly corresponded to Babylonian system. The basic unit was log (לג) that was similar to Babylonian mina.
arroba to kor (כור)
arroba to letek (לתך)
arroba to ephah (איפה)
arroba to se'ah (סאה)
arroba to kav (קב)
arroba to log (לג)
arroba to bezah (egg-size)
arroba to kezayit (olive-size, כְּזַיִת)
Units: kor (כור)  / letek (לתך)  / ephah (איפה)  / se'ah (סאה)  / kav (קב)  / log (לג)  / bezah (egg-size)  / kezayit (olive-size, כְּזַיִת)
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Biblical and Talmudic Liquid Measure (Old Testament)

Exact conversion for Biblical units is rarely certain. There were more units mentioned in Talmud, many of them from foreign origin, e.g. Persia or Greece. Unfortunately the capacity of those units is currently unknown.
arroba to bath
arroba to hin
arroba to log
Units: bath  / hin  / log
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Old Spanish Dry Measure

arroba to cahíz
arroba to fanega
arroba to cuartilla (¼ of a fanega)
arroba to celemín
arroba to medio
arroba to cuartillo (¼ of a celemín)
arroba to ochavo
Units: cahíz  / fanega  / cuartilla (¼ of a fanega)  / celemín  / medio  / cuartillo (¼ of a celemín)  / ochavo
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Old Spanish Liquid Measure

arroba to moyo
arroba to cántara
arroba to azumbre
arroba to botella
arroba to cuartillo
arroba to copa
arroba to panilla (for olive oil)
arroba to cortadillo
Units: moyo  / cántara  /  / azumbre  / botella  / cuartillo  / copa  / panilla (for olive oil)  / cortadillo
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Old Portuguese Dry Measure

arroba to moio
arroba to fanga
arroba to alqueire
arroba to quarta
arroba to oitava
arroba to maquia
arroba to selamim
arroba to meio-selamim (half-selamim)
arroba to quarto de selamim (quarter of selamim)
Units: moio  / fanga  / alqueire  / quarta  / oitava  / maquia  / selamim  / meio-selamim (half-selamim)  / quarto de selamim (quarter of selamim)
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Old Portuguese Liquid Measure

arroba to tonel
arroba to pipa
arroba to almude
arroba to cântaro
arroba to pote
arroba to canada
arroba to quartilho
arroba to meio-quartilho (half-quartilho)
arroba to quarto de quartilho (quarter of quartilho)
Units: tonel  / pipa  / almude  / cântaro  / pote  / canada  / quartilho  / meio-quartilho (half-quartilho)  / quarto de quartilho (quarter of quartilho)
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Old French

There were many local variations; the following are Quebec and Paris definitions
arroba to minot
arroba to litron
Units: minot  / litron
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Old Russian Dry Measure

arroba to cetverik (mera)
arroba to vedro
arroba to garnetz
Units: cetverik (mera)  / vedro  / garnetz
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Old Russian Liquid Measure

arroba to vedro
arroba to shtoff
arroba to chetvert (quart)
arroba to vine bottle
arroba to vodka bottle
arroba to charka
arroba to shkalik
Units: vedro  / shtoff  / chetvert (quart)  / vine bottle  / vodka bottle  / charka  / shkalik

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