The QUDT Ontologies are issued under a Creative Commons Attribution 4.0 International License (CC BY 4.0), available at https://creativecommons.org/licenses/by/4.0/. Attribution should be made to QUDT.org
Product LifeCycle Ontology (PLCO) - Subset of the QUDT Unit Schema
Standard units of measure for all units.
A centimetre is a unit of length in the metric system, equal to one hundredth of a metre, which is the SI base unit of length. Centi is the SI prefix for a factor of 10. The centimetre is the base unit of length in the now deprecated centimetre-gram-second (CGS) system of units.
Centimeter
Centimetre
A unit of area equal to that of a square, of sides 1cm
Square Centimeter
Square Centimetre
Day
\(\textit{Celsius}\), also known as centigrade, is a scale and unit of measurement for temperature. It can refer to a specific temperature on the Celsius scale as well as a unit to indicate a temperature interval, a difference between two temperatures or an uncertainty. This definition fixes the magnitude of both the degree Celsius and the kelvin as precisely 1 part in 273.16 (approximately 0.00366) of the difference between absolute zero and the triple point of water. Thus, it sets the magnitude of one degree Celsius and that of one kelvin as exactly the same. Additionally, it establishes the difference between the two scales' null points as being precisely \(273.15\,^{\circ}{\rm C}\).
See NIST section SP811 section 4.2.1.1
See NIST section SP811 section 6.2.8
Celsius-fok
Grad Celsius
celsius
darjah celsius
degree Celsius
degré celsius
grad celsius
grado celsius
gradus celsii
grau celsius
stopień celsjusza
stopinja Celzija
stupně celsia
βαθμός Κελσίου
градус Целзий
градус Цельсия
צלזיוס
درجة مئوية
درجه سانتی گراد/سلسیوس
सेल्सियस
セルシウス度
摄氏度
Decilitre
Decimeter
Decimetre
0.1-fold of the power of the SI base unit metre with the exponent 2
Square Decimeter
Square Decimetre
A unit of mass in the metric system. The name comes from the Greek gramma, a small weight identified in later Roman and Byzantine times with the Latin scripulum or scruple (the English scruple is equal to about 1.3 grams). The gram was originally defined to be the mass of one cubic centimeter of pure water, but to provide precise standards it was necessary to construct physical objects of specified mass. One gram is now defined to be 1/1000 of the mass of the standard kilogram, a platinum-iridium bar carefully guarded by the International Bureau of Weights and Measures in Paris for more than a century. (The kilogram, rather than the gram, is considered the base unit of mass in the SI.) The gram is a small mass, equal to about 15.432 grains or 0.035 273 966 ounce.
Gram
0,001-fold of the SI base unit kilogram divided by the unit litre
Gram Per Liter
Gram Per Litre
0,001-fold of the SI base unit kilogram divided by the power of the SI base unit metre with the exponent 3
Gram Per Cubic Meter
Gram Per Cubic Metre
The hour (common symbol: h or hr) is a unit of measurement of time. In modern usage, an hour comprises 60 minutes, or 3,600 seconds. It is approximately 1/24 of a mean solar day. An hour in the Universal Coordinated Time (UTC) time standard can include a negative or positive leap second, and may therefore have a duration of 3,599 or 3,601 seconds for adjustment purposes. Although it is not a standard defined by the International System of Units, the hour is a unit accepted for use with SI, represented by the symbol h.
Hour
The kilogram or kilogramme (SI symbol: kg), also known as the kilo, is the base unit of mass in the International System of Units and is defined as being equal to the mass of the International Prototype Kilogram (IPK), which is almost exactly equal to the mass of one liter of water. The avoirdupois (or international) pound, used in both the Imperial system and U.S. customary units, is defined as exactly 0.45359237 kg, making one kilogram approximately equal to 2.2046 avoirdupois pounds.
Kilogramm
chiliogramma
chilogrammo
kilogram
kilogramm*
kilogramme
kilogramo
quilograma
χιλιόγραμμο
килограм
килограмм
קילוגרם
كيلوغرام
کیلوگرم
किलोग्राम
キログラム
公斤
SI base unit kilogram divided by the unit litre
Kilogram Per Liter
Kilogram Per Litre
Kilogram Per Square Meter (kg/m2) is a unit in the category of Surface density. It is also known as kilograms per square meter, kilogram per square metre, kilograms per square metre, kilogram/square meter, kilogram/square metre. This unit is commonly used in the SI unit system. Kilogram Per Square Meter (kg/m2) has a dimension of ML-2 where M is mass, and L is length. This unit is the standard SI unit in this category.
Kilogram per Square Meter
Kilogram per Square Metre
Kilogram per cubic metre is an SI derived unit of density, defined by mass in kilograms divided by volume in cubic metres. The official SI symbolic abbreviation is \(kg \cdot m^{-3}\), or equivalently either \(kg/m^3\).
Kilogram per cubic metre is an SI derived unit of density, defined by mass in kilograms divided by volume in cubic metres. The official SI symbolic abbreviation is kg . m^-3, or equivalently either kg/m^3.
Kilogramm je Kubikmeter
chilogrammo al metro cubo
kilogram bölü metre küp
kilogram na kubični meter
kilogram na metr krychlový
kilogram na metr sześcienny
kilogram pe metru cub
kilogram per cubic meter
kilogram per cubic metre
kilogram per meter kubik
kilogramme par mètre cube
kilogramo por metro cúbico
quilograma por metro cúbico
χιλιόγραμμο ανά κυβικό μέτρο
килограм на кубичен метър
килограмм на кубический метр
كيلوغرام لكل متر مكعب
کیلوگرم بر متر مکعب
किलोग्राम प्रति घन मीटर
キログラム毎立方メートル
千克每立方米
A common metric unit of length or distance. One kilometer equals exactly 1000 meters, about 0.621 371 19 mile, 1093.6133 yards, or 3280.8399 feet. Oddly, higher multiples of the meter are rarely used; even the distances to the farthest galaxies are usually measured in kilometers.
Kilometer
Kilometre
Kiloohm
The \(litre\) (American spelling: \(\textit{liter}\); SI symbol \(l\) or \(L\)) is a non-SI metric system unit of volume equal to \(1 \textit{cubic decimetre}\) (\(dm^3\)), 1,000 cubic centimetres (\(cm^3\)) or \(1/1000 \textit{cubic metre}\). If the lower case "L" is used as the symbol, it is sometimes rendered as a cursive "l" to help distinguish it from the capital "I", although this usage has no official approval by any international bureau.
Liter
Litre
The metric and SI base unit of distance. The 17th General Conference on Weights and Measures in 1983 defined the meter as that distance that makes the speed of light in a vacuum equal to exactly 299 792 458 meters per second. The speed of light in a vacuum, \(c\), is one of the fundamental constants of nature. The meter is equal to approximately 1.093 613 3 yards, 3.280 840 feet, or 39.370 079 inches.
The metric and SI base unit of distance. The meter is equal to approximately 1.093 613 3 yards, 3.280 840 feet, or 39.370 079 inches.
Meter
meter
metr
metre
metro
metru
metrum
mètre
méter
μέτρο
метр
метър
מטר
متر
मीटर
メートル
The S I unit of area is the square metre.
Quadratmeter
Square Meter
kvadratni meter
meter persegi
metr kwadratowy
metrekare
metro cuadrado
metro quadrado
metro quadrato
metru pătrat
metrum quadratum
mètre carré
négyzetméter
square metre
čtvereční metr
τετραγωνικό μέτρο
квадратен метър
квадратный метр
מטר רבוע
متر مربع
वर्ग मीटर
平方メートル
平方米
The SI unit of volume, equal to 1.0e6 cm3, 1000 liters, 35.3147 ft3, or 1.30795 yd3. A cubic meter holds about 264.17 U.S. liquid gallons or 219.99 British Imperial gallons.
Cubic Meter
Kubikmeter
cubic metre
kubični meter
meter kubik
metr krychlový
metr sześcienny
metreküp
metro cubo
metro cúbico
metru cub
metrum cubicum
mètre cube
κυβικό μετρο
кубичен метър
кубический метр
מטר מעוקב
متر مكعب
متر مکعب
घन मीटर
立方メートル
立方米
A minute is a unit of measurement of time. The minute is a unit of time equal to 1/60 (the first sexagesimal fraction of an hour or 60 seconds. In the UTC time scale, a minute on rare occasions has 59 or 61 seconds; see leap second. The minute is not an SI unit; however, it is accepted for use with SI units. The SI symbol for minute or minutes is min (for time measurement) or the prime symbol after a number, e.g. 5' (for angle measurement, even if it is informally used for time).
Minute
Megaohm
Millilitre
The millimetre (International spelling as used by the International Bureau of Weights and Measures) or millimeter (American spelling) (SI unit symbol mm) is a unit of length in the metric system, equal to one thousandth of a metre, which is the SI base unit of length. It is equal to 1000 micrometres or 1000000 nanometres. A millimetre is equal to exactly 5/127 (approximately 0.039370) of an inch.
Millimeter
Millimetre
mil
0.000001-fold of the power of the SI base unit metre with the exponent 2
Square Millimeter
Square Millimetre
"Number" is a unit for 'Dimensionless' expressed as (\#\).
Number
The \textit{ohm} is the SI derived unit of electrical resistance, named after German physicist Georg Simon Ohm. \(\Omega \equiv\ \frac{\text{V}}{\text{A}}\ \equiv\ \frac{\text{volt}}{\text{amp}}\ \equiv\ \frac{\text{W}}{\text {A}^{2}}\ \equiv\ \frac{\text{watt}}{\text{amp}^{2}}\ \equiv\ \frac{\text{H}}{\text {s}}\ \equiv\ \frac{\text{henry}}{\text{second}}\)
Ohm
ohm
ohmio
ohmium
אוהם
أوم
اهم
ओह्म
オーム
欧姆
The \(Second\) (symbol: \(s\)) is the base unit of time in the International System of Units (SI) and is also a unit of time in other systems of measurement. Between the years1000 (when al-Biruni used seconds) and 1960 the second was defined as \(1/86400\) of a mean solar day (that definition still applies in some astronomical and legal contexts). Between 1960 and 1967, it was defined in terms of the period of the Earth's orbit around the Sun in 1900, but it is now defined more precisely in atomic terms. Under the International System of Units (via the International Committee for Weights and Measures, or CIPM), since 1967 the second has been defined as the duration of \({9192631770}\) periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium 133 atom.In 1997 CIPM added that the periods would be defined for a caesium atom at rest, and approaching the theoretical temperature of absolute zero, and in 1999, it included corrections from ambient radiation.
Sekunde
másodperc
saat
saniye
second
seconde
secondo
secundum
secundă
segundo
sekunda
δευτερόλεπτο
секунда
שנייה
ثانية
ثانیه
सैकण्ड
Tonne
A year is any of the various periods equated with one passage of Earth about the Sun, and hence of roughly 365 days. The familiar calendar has a mixture of 365- and 366-day years, reflecting the fact that the time for one complete passage takes about 365¼ days; the precise value for this figure depends on the manner of defining the year.
Year