Oil & Gas Unit Converter

▶ Convertor of 'Length' units:

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mm( Millimeter ) Millimeter is a unit of length in the metric system, equal to one thousandth of a meter or one tenth of a centimeter.
cm( Centimeter ) Centimeter is a unit of length in the metric system, equal to one hundredth of a meter.
m( Meter ) Meter is the base unit of length in the International System of Units SI.
km( Kilometer ) Kilometer is a unit of length in the metric system, equal to one thousand meters.
in( Inch ) Inch is a unit of length in the British-imperial and United States customary systems of measurement. It is now formally equal to 1⁄36 yard but usually understood as 1⁄12 of a foot.
ft( Feet ) Foot is a unit of length in the imperial and US customary systems of measurement. Since 1959, both units have been defined by international agreement as equivalent to 0.3048 meters exactly. In both systems, the foot comprises 12 inches and three feet equal a yard.
Feet plus inches...
Yard( yd ) Yard is an English unit of length, in both the British imperial and US customary systems of measurement, that comprises 3 feet or 36 inches. It is by international agreement in 1959 standardized as exactly 0.9144 meters.
Mile( Land mile - Statute mile - SM ) Mile is an English unit of length of linear measure equal to 5,280 feet, or 1,760 yards, and standardized as exactly 1,609.344 meters by international agreement in 1959.
Nautical mile( Nautical mile NM - shipping mile ) A nautical mile is a unit of measurement defined as 1,852 meters. Historically, it was defined as one minute of latitude, which is equivalent to one sixtieth of a degree of latitude. It is a non-SI unit accepted for use with the SI, and rounded to an even number of meters for its continued use in both air and marine navigation, and for the definition of territorial waters.
1/64th of inch( 1/64th of an inch ) This unit is used to express the size of chokes or bean sizes.

▶ Convertor of 'Area' units:

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▶ Convertor of 'Volume' units:

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▶ Convertor of 'Mass or Weight' units:

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mg( Milligram )
g( Gram )
kg( Kilogram ) The base unit for Mass.
Metric ton( ton - t ) Metric ton equals 1000 kg.
Ounce( UK Imperial ounce - US avoirdupois ounce - oz ) Ounce is 1/16 of a pound or 28.3495 grams. (It is different than the 'troy ounce' which is only used for precious metals and equals to ~31.1 grams).
Pound( UK Imperial pound - US avoirdupois pound - lbm ) Pound equals 453.59 gram or 16 ounces.
US Short Ton( US short ton - ust ) Short ton equals 907.185 kg.
UK Long Ton( UK imperial long ton - ukt ) Long ton equals 1016.047 kg.

▶ Convertor of 'Pressure' units:

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psi( pound-force per square inch ) psi is the pressure resulting from a force of one pound-force applied to an area of one square inch.
bar( bar ≡ 100000 Pa ) The bar is a metric unit of pressure, but is not approved as part of the SI system. It is defined as exactly equal to 100,000 Pa, which is slightly less than the current average atmospheric pressure on Earth at sea level.
Pa( Pascal ≡ N/m2 ≡ (kg.m/s2)/m2 ) Pascal is the SI derived unit of pressure used to quantify pressure. It is defined as one newton per square meter.
kpa( kilopascal ) Please see the comment of Pascal
mpa( megapascal ) Please see the comment of Pascal
atm( standard atmosphere - «ata» is the absolute form ) The standard atmosphere is a unit of pressure defined as 101325 Pa (1.01325 bar). It is sometimes used as a reference or standard pressure.
kg/cm2( Kilogram per square cm )
mm Hg( millimeter of mercury = ~1 Torr )

▶ Convertor of 'Temperature' units:

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°c( celsius )
°k( kelvin )
°f( Fahrenheit )
°R( Rankin )

▶ Convertor of the most common units of 'Density & Fluid gradients' in the oil industry. The ranges of fluid gradients at reservoir conditions are summerized in the 'info' buttons:

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▶ Convertor of 'Volumetric Flow rate' units. With the provided formula on the right hand side, an engineer can convert the 'Mass flow rate' to volumetric flow rate. Sometimes in field operations, the production is measured by mass flow rate like 'ton per day t/d' which can be converted to volume flow rate with this formula:

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To convert the flow rate to "ton per day",
please enter your fluid density here:
-> (Kg/m3)
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▶ Convertor of 'Mass Flow rate' units. With the provided formula on the right hand side, an engineer can convert the 'Volume flow rate' to Mass flow rate:

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To convert the "ton/day" to "m3/day" flow rate,
please enter your fluid density here:
-> (Kg/m3)
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▶ Unit conversion of the fluid ratios has been sometimes dificult. With this convertor, an engineer can convert the units of 'Gas Oil Ratio', 'Solution Gas Oil Ratio', 'Gas Liquid Ratio', 'Formation Volume Factor', 'Condensate Gas Ratio' and 'Water Gas Ratio':

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m3/m3( cubic meter per cubic meter - Sm3/Sm3 )
Sm3/Sm3( standard cubic meter per standard cubic meter - m3/m3 )
SCF/STB( ft3/bbl - standard cubic feet per stock tank barrel )
MSCF/STB( thousand standard cubic feet per stock tank barrel )
STB/scf( bbl/ft3 - stock tank barrel per cubic foot )
STB/MSCF( bbl/Mft3 - stock tank barrel per thousand standard cubic feet )
STB/MMSCF( bbl/MMft3 - stock tank barrel per million standard cubic feet )

▶ Compressibility unit convertor:

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1/psi( psi^-1 )
1/atm( Standard atm^-1 )
1/pa( pa^-1 )
1/bar( bar^-1 )

▶ Dynamic Viscosity unit convertor:

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▶ Energy unit convertor:

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▶ Power unit convertor:

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▶ Time unit convertor:

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Second( Sec - s or ss )
Minute( Min - mm )
Hour( hr - hrs )
Day( d - dd )
Week( wk )
Month( 30.437 days - average month ) Average month= 365.25 days a year devided by 12 months.
Year( 365.25 days - yr - average year ) 365 days plus 0.25 day to account for leap year (366 days) every four years (365+1/4).

▶ Speed unit convertor:

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m/s( Meter per second )
m/min( Meter per minute )
m/h( Meter per hour - unit of ROP ) Drilling rate of penetration (ROP) is stated by m/hr or ft/hr.
km/h( Kilometer per hour - kph )
ft/s( Feet per second )
ft/min( Feet per minute )
ft/h( Feet per hour - unit of ROP ) Drilling rate of penetration (ROP) is stated by m/hr or ft/hr.
mi/h( Mile per hour - mph )
knot( One nautical mile per hour - kn - kt ) one nautical mile (1.852 km) per hour

Petroleum Engineering Database including abbreviations and dictionary

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