====== unit ======

Unit identifier; the enumerated list is basically English unit names in lowercase, with a few upper case exceptions, e.g., 32F, mmHg, pH.

^ Value ^ Description ^
| 0C_cm_Hg |  |
| 32F_in_Hg |  |
| 39F_btu |  |
| 39F_ft_water |  |
| 39F_in_water |  |
| 4C_cm_water |  |
| 59F_btu |  |
| 60F_btu |  |
| 60F_in_Hg |  |
| 60F_in_water |  |
| abampere |  |
| abcoulomb |  |
| abfarad |  |
| abhenry |  |
| abmho |  |
| abohm |  |
| abvolt |  |
| abwatt |  |
| ampere | The base unit of electric current in the SI system. |
| angstrom |  |
| apothecaries_dram |  |
| arc_degree | An arc degree (°) is a unit of angular measurement, equal to 1/360th of a full rotation. |
| arc_minute | An arc minute (′) is a unit of angular measurement, equal to 1/60th of a degree. |
| arc_second | An arc second (″) is a unit of angular measurement, equal to 1/60th of an arc minute. |
| are |  |
| astronomical_unit |  |
| atomic_unit_of_1st_hyperpolarizablity |  |
| atomic_unit_of_2nd_hyperpolarizablity |  |
| atomic_unit_of_action |  |
| atomic_unit_of_charge |  |
| atomic_unit_of_charge_density |  |
| atomic_unit_of_current |  |
| atomic_unit_of_electric_dipole_moment |  |
| atomic_unit_of_electric_field |  |
| atomic_unit_of_electric_field_gradient |  |
| atomic_unit_of_electric_polarizablity |  |
| atomic_unit_of_electric_potential |  |
| atomic_unit_of_electric_quadrupole_moment |  |
| atomic_unit_of_energy |  |
| atomic_unit_of_force |  |
| atomic_unit_of_length |  |
| atomic_unit_of_magnetic_dipole_moment |  |
| atomic_unit_of_magnetic_flux_density |  |
| atomic_unit_of_magnetizability |  |
| atomic_unit_of_mass |  |
| atomic_unit_of_momentum |  |
| atomic_unit_of_permittivity |  |
| atomic_unit_of_time |  |
| atomic_unit_of_velocity |  |
| bar |  |
| barn |  |
| barye |  |
| becquerel | The becquerel (Bq) is the SI unit of radioactivity, defined as one disintegration per second. |
| bel | A logarithmic unit used to measure ratios, primarily in acoustics and electronics; 1 bel equals 10 decibels. |
| boiler_horsepower |  |
| candela | The base unit of luminous intensity in the SI system. |
| carat | A unit of mass used for gemstones, equivalent to 200 milligrams. |
| circular_mil | A unit of area used in electrical engineering to represent wire cross-sectional area, equal to the area of a circle with a diameter of one mil (1/1000 inch). |
| cm_Hg |  |
| cm_water |  |
| computer_pica |  |
| computer_point |  |
| coulomb | The coulomb (C) is the SI unit of electric charge, defined as the amount of charge transported by a constant current of one ampere in one second. |
| curie |  |
| darcy |  |
| day | A day (d) is a unit of time equal to 24 hours. |
| debye |  |
| degree_Celsius | The degree Celsius (°C) is a unit of temperature, defined relative to the Kelvin scale, where 0°C corresponds to 273.15 K. |
| degree_Fahrenheit |  |
| degree_Rankine |  |
| denier |  |
| denier | A unit of measure for the linear mass density of fibers, defined as the mass in grams per 9,000 meters of fiber. |
| dram |  |
| dyne |  |
| ec_therm |  |
| electric_horsepower |  |
| electronvolt |  |
| erg |  |
| farad | The farad (F) is the SI unit of electrical capacitance, defined as the ability of a capacitor to store one coulomb of charge with a potential difference of one volt. |
| foot |  |
| footcandle | A unit of illuminance, representing the amount of light that falls on a surface one foot away from a standard candle source. |
| footlambert | A unit of luminance, defined as 1/π candela per square foot. |
| ft_Hg |  |
| ft_water |  |
| gal |  |
| gauss |  |
| gilbert |  |
| gon | A unit of angular measure where one full rotation is divided into 400 gons, commonly used in surveying. |
| grain |  |
| gram | The base unit of mass in the SI system, defined as one-thousandth of a kilogram. |
| gray | The gray (Gy) is the SI unit of absorbed radiation dose, defined as the absorption of one joule of radiation energy per kilogram of matter. |
| gross_hundredweight |  |
| hectare |  |
| henry | The henry (H) is the SI unit of inductance, defined as the inductance of a closed circuit in which an electromotive force of one volt is induced when the current changes at a rate of one ampere per second. |
| hertz | The SI unit of frequency, defined as one cycle per second. |
| horsepower |  |
| hour | An hour (h) is a unit of time equal to 60 minutes or 3600 seconds. |
| hundredweight |  |
| imperial_gallon |  |
| imperial_gill |  |
| imperial_ounce |  |
| imperial_pint |  |
| imperial_quart |  |
| in_Hg |  |
| in_water |  |
| inch |  |
| joule | The SI unit of energy, defined as one newton-meter. |
| katal | The katal (kat) is the SI unit of catalytic activity, defined as the amount of enzyme activity that converts one mole of substrate per second. |
| kayser |  |
| kelvin | The base unit of thermodynamic temperature in the SI system. |
| kilogram_force |  |
| kip |  |
| knot |  |
| lambert |  |
| light_year |  |
| liter |  |
| long_ton |  |
| lumen | The lumen (lm) is the SI unit of luminous flux, defined as the total quantity of visible light emitted by a source per unit time. |
| lux | The lux (lx) is the SI unit of illuminance, defined as one lumen per square meter. |
| maxwell |  |
| mean_btu |  |
| meter | The base unit of length in the International System of Units (SI). |
| metric_horsepower |  |
| metric_ton |  |
| mile |  |
| minute | A minute (min) is a unit of time equal to 60 seconds. |
| mm_Hg |  |
| mm_water |  |
| mole | The base unit of amount of substance in the SI system. |
| nato_mil | A unit of angular measure used in military applications, where 1 NATO mil equals 1/6400 of a circle. |
| natural_unit_of_action |  |
| natural_unit_of_action_in_eV_s |  |
| natural_unit_of_energy |  |
| natural_unit_of_energy_in_MeV |  |
| natural_unit_of_length |  |
| natural_unit_of_mass |  |
| natural_unit_of_momentum |  |
| natural_unit_of_momentum_in_MeV_per_c |  |
| natural_unit_of_time |  |
| natural_unit_of_velocity |  |
| nautical_mile |  |
| neper | A logarithmic unit used to express ratios, mainly in signal processing and acoustics, based on natural logarithms. |
| newton | The SI unit of force, defined as the force required to accelerate a one-kilogram mass by one meter per second squared. |
| oersted |  |
| ohm | The ohm (Ω) is the SI unit of electrical resistance, defined as the resistance between two points of a conductor when a voltage of one volt produces a current of one ampere. |
| ounce |  |
| pH | A unitless measure of acidity or alkalinity of a solution, defined as the negative logarithm of the hydrogen ion concentration. |
| parsec |  |
| pascal | The SI unit of pressure, defined as one newton per square meter. |
| pennyweight |  |
| petro_barrel | A unit of volume used for crude oil and petroleum products, equal to 42 US gallons (approximately 159 liters). |
| phot |  |
| poise |  |
| pound |  |
| pound_force |  |
| pound_mole | A unit of amount of substance in which the quantity is expressed in pounds rather than grams per mole. |
| poundal |  |
| printers_pica |  |
| printers_point |  |
| rad |  |
| radian | The derived SI unit of angular measure, equal to the angle subtended at the center of a circle by an arc whose length is equal to the circle’s radius. |
| rem |  |
| rhe |  |
| roentgen |  |
| scruple |  |
| second | The base unit of time in the SI system. |
| shake |  |
| short_ton |  |
| sidereal_day |  |
| sidereal_hour |  |
| sidereal_minute |  |
| sidereal_second |  |
| sidereal_year |  |
| siemens | The siemens (S) is the SI unit of electrical conductance, defined as the reciprocal of resistance in ohms. |
| sievert | The sievert (Sv) is the SI unit of equivalent radiation dose, used to measure the biological effects of radiation. |
| slug |  |
| standard_atmosphere |  |
| statampere |  |
| statcoulomb |  |
| statfarad |  |
| stathenry |  |
| statmho |  |
| statohm |  |
| stattesla |  |
| statvolt |  |
| statwatt |  |
| statweber |  |
| steradian | The SI unit of solid angle measure. |
| stilb |  |
| stokes |  |
| table_btu |  |
| table_calorie |  |
| table_kg_calorie |  |
| technical_atmosphere |  |
| tesla | The tesla (T) is the SI unit of magnetic flux density, defined as one weber per square meter. |
| tex |  |
| tex | A unit of measure for the linear mass density of fibers, defined as the mass in grams per 1,000 meters of fiber. |
| thermo_btu |  |
| thermo_calorie |  |
| thermo_kg_calorie |  |
| ton_force |  |
| ton_refrigeration | A unit of power used in refrigeration and air conditioning, defined as the rate of heat transfer needed to freeze 1 short ton (2,000 lb) of water at 32°F in 24 hours. |
| tons_of_tnt |  |
| torr |  |
| tropical_year |  |
| troy_ounce |  |
| troy_pound |  |
| uk_horsepower |  |
| unified_atomic_mass_unit |  |
| us_acre |  |
| us_bushel |  |
| us_cup |  |
| us_dry_pint |  |
| us_dry_quart |  |
| us_fill |  |
| us_fluid_dram |  |
| us_fluid_ounce |  |
| us_gallon |  |
| us_label_cup |  |
| us_label_fluid_ounce |  |
| us_label_ounce |  |
| us_label_tablespoon |  |
| us_label_teaspoon |  |
| us_minim |  |
| us_peck |  |
| us_pint |  |
| us_quart |  |
| us_survey_chain |  |
| us_survey_fathom |  |
| us_survey_foot |  |
| us_survey_furlong |  |
| us_survey_inch |  |
| us_survey_link |  |
| us_survey_mile |  |
| us_survey_rod |  |
| us_survey_yard |  |
| us_tablespoon |  |
| us_teaspoon |  |
| us_therm |  |
| volt | The volt (V) is the SI unit of electric potential and electromotive force, defined as the potential difference across a conductor when a current of one ampere dissipates one watt of power. |
| water_horsepower |  |
| watt | The SI unit of power, defined as one joule per second. |
| weber | The weber (Wb) is the SI unit of magnetic flux, defined as the flux that produces an electromotive force of one volt in a circuit with one turn when reduced to zero at a uniform rate in one second. |
| yard |  |
| year_365 |  |

^ Schema version | 3.2.0 |
^ Schema location | unitsmlSchema_lite-0.9.18.xsd |
^ Namespace | urn:oasis:names:tc:unitsml:schema:xsd:UnitsMLSchema_lite-0.9.18 |
^ Created | 2026-09-09T11:33:00Z |