fl oz - Fluid Ounce. Conversion Chart

This converter features contemporary units of capacity. There is also a special converter for historical units of volume you might want to visit for ancient, medieval and other old units that are no longer used.
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Metric

Units: cubic kilometer (km³)  / cubic meter (m³)  / cubic decimeter (dm³)  / cubic centimeter (cc)  / cubic millimeter (mm³)  / hectoliter (hl)  / decaliter  / liter (l)  / deciliter (dl)  / centiliter (cl)  / milliliter (ml)  / microliter (µl)
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U.S. Liquid Measure

Units: acre foot  / barrel (petroleum)  / gallon (gal)  / quart (qt)  / pint (pt)  / gill  /  / fluid dram (fl dr)  / minim (min)
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U.S. Dry Measure

Units: barrel  / bushel (bu)  / peck (pk)  / gallon (gal)  / quart (qt)  / pint (pt)
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Apothecaries

The traditional English apothecaries' system defines weights, not volumes. However, there was apothecaries' system for volumes too, though less commonly used. Before introduction of the imperial units, all apothecaries' measures were based on the wine gallon which later became the base of U.S. liquid gallon.

In addition to five official apothecaries' units pint, fliud ounce, fluid dram, fluid scruple, and minim, there was a set of unofficial but widely used units for various spoon and glass sizes. We list them here too.

In 1858 apothercaries' system was officially abolished in in the U.K. in favour of the standard Avoirdupois system. In the United States the apothecaries' system remained in use until 1971, when it was officially abolished in favor of the metric system.

Units: pint (pt)  / glass-tumbler  / breakfast cup  / tea cup  / wine glass  / fluid ounce (ƒ℥)  / table spoon  / dessert spoon  / fluid dram (ƒʒ)  / tea spoon  / minim
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British Imperial Liquid And Dry

Units: perch  / barrel  / bushel (bu)  / peck (pk)  / gallon (gal)  / quart (qt)  / pint (pt)  / fluid ounce (oz)  / fluid drachm (fl dr)  / fluid scruple  / minim (min)
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British and U.S. derivatives of length units

Units: cubic mile (mi³)  / mil cubic feet (mcf)  / cubic yard (yd³)  / centum cubic feet (ccf)  / cubic foot (ft³)  / cubic inch (in³)
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English wine cask units

Imperial and U.S. definitions of these units slightly differ. We use Imperial definitions here.
Units: tun  / butt  / puncheon  / hogshead  / tierce  / barrel  / rundlet
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English brewery cask units

Historically the terms beer and ale referred to distinct brews. From the mid 15th century until 1803 in Britain "ale" casks and "beer" casks differed in the number of gallons they contained. We provide conversions for the latest standard (1824) of units that are based on imperial gallons.
Units: hogshead  / barrel  / kilderkin  / firkin  / pin
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U.S. brewery cask units

In the U.S. only beer barrel is legally defined. Keg sizes are not standardized and could be any size smaller than a barrel. However, typical beer keg size is a half of beer barrel.
Units: US beer barrel  / US beer half-barrel  / US beer keg (typical)  / US beer quarter-barrel
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Cooking (U.S.)

Units: cup  / tablespoon  / teaspoon
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Cooking (International)

Units: cup  / tablespoon  / teaspoon
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Cooking (Australian)

Units: tablespoon  / dessert teaspoon  / teaspoon
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Natural units

In physics, natural units are physical units of measurement based only on universal physical constants. The origin of their definition comes only from properties of nature and not from any human construct.
Units: Planck volume (L³)
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Astronomical

Units: cubic parsec (pc³)  / cubic light year  / cubic light minute  / cubic light second
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Ship tonnage measurements

Register ton unit was defined by the Moorsom Commission (Great Britain) in 1854 to measure ship internal volume. It was officially replaced by tonnage when the International Maritime Organization (IMO) adopted The International Convention on Tonnage Measurement of Ships on 23 June 1969. Since 18 July 1994 the gross and net tonnages are the only official measures used for the ships.
Units: tonnage  / register ton  / Panama Canal Universal Measurement System (PC/UMS)
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Lumber measure

These units are sometimes used to measure the volume of lumber in Great Britain, the United States, Canada, Australia and New Zealand. The same units is called board-foot in the U.S. and Canada and super foot or superficial foot in Australia and New Zealand. One board-foot is the volume of a one-foot length of a board one foot wide and one inch thick.
Units: million board-feet (mmfbm, mmbdft, mmbf)  / cord  / thousand board-feet (mfbm, mbdft, mbf)  / hoppus ton (HT)  / cubic ton of timber  / stere  / hoppus foot, hoppus cube (h ft)  / boardfoot, board-foot (fbmm, bdft, bf)
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Japanese

Units: sai (才)  / shaku (勺)  / go (合)  / sho (升)  / to (斗)  / koku (石)
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Chinese units of 1930

Units: dan (市石)  / dou (市斗)  / sheng (市升)  / ge (合)  / shao (勺)  / cuo (撮)
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Chinese units of 1915

Units: dan (石)  / hu (斛)  / dou (斗)  / sheng (升)  / ge (合)  / shao (勺)
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Thai units

Some of these units are still in use even though metric system was formally established in 1923. Before the metrication the old units were standardized to exact metric values.
Units: kwian (เกวียน, cartload)  / sat (สัด, basket)  / thang (ถัง, tank)  / thanan (ทะนาน, coconut shell)  / fai mue (ฟายมือ, palm of grain)  / kam mue (กำมือ, hand of grain)  / yip mue (หยิบมือ, pinch)

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