Meters per Second Squared [m/s²] : SI base unit of acceleration, used globally in scientific and engineering contexts.

Kilometers per Hour per Second [km/h/s] : Metric unit of acceleration used for vehicle dynamics.

Feet per Second Squared [ft/s²] : Imperial unit of acceleration commonly used in engineering in the United States.

G-Force [g] : Unit of acceleration equal to the acceleration due to Earth's gravity.

Galileo [Gal] : CGS unit of acceleration, used primarily in geophysics.

Miles per Hour per Second [mi/h/s] : Imperial unit of acceleration used for vehicle dynamics in the United States.

Inches per Second Squared [in/s²] : Imperial unit of acceleration used in specific engineering fields.

Attometers per Second Squared [am/s²] : Extremely small unit of acceleration used in theoretical physics.

Light Years per Second Squared [ly/s²] : Hypothetical unit of acceleration used in astrophysics.

Shaku per Second Squared [shaku/s²] : Historical Japanese unit of acceleration.

Cubit per Second Squared [cubit/s²] : Historical unit of acceleration based on the cubit length.

Degree [°] : A unit of angular measurement equal to 1/360th of a circle.

Radian [rad] : The standard unit of angular measure in mathematics, defined as the angle subtended by an arc of a circle that is equal in length to the circle's radius.

Gradian [grad] : A unit of angular measurement where a right angle is divided into 100 gradians, often used in surveying and engineering.

Minute of Arc ['] : A unit of angular measurement equal to 1/60th of a degree, often used in astronomy and navigation.

Second of Arc [''] : A unit of angular measurement equal to 1/60th of a minute of arc or 1/3600th of a degree.

Mil [mil] : A unit of angular measurement used by military forces, equal to approximately 1/6400th of a circle.

Revolution [rev] : A complete turn or rotation, equivalent to 360 degrees or 2π radians.

Quadrant [quad] : An angle equal to one-fourth of a full rotation, or 90 degrees.

Turn [turn] : Another term for a revolution, representing a full rotation or 360 degrees.

Square Meter [m²] : SI base unit of area, used globally in various applications.

Square Kilometer [km²] : Metric unit of area used for measuring large spaces, such as geographical areas.

Hectare [ha] : Metric unit of area commonly used in agriculture and land measurement.

Square Centimeter [cm²] : Metric unit of area used for small surfaces, such as in science and engineering.

Square Millimeter [mm²] : Metric unit of area used for very small surfaces, such as in precision engineering.

Square Mile [mi²] : Imperial unit of area used primarily in the United States for large land measurements.

Acre [ac] : Imperial unit of area used for land measurement, especially in the United States and the UK.

Square Foot [ft²] : Imperial unit of area used for measuring rooms and buildings in the United States and UK.

Square Inch [in²] : Imperial unit of area used in various industries for small surfaces.

Square Yard [yd²] : Imperial unit of area used for measuring larger spaces such as gardens and yards.

Barn [b] : Unit of area used in nuclear physics, equal to 10⁻²⁸ square meters.

Square Chain [ch²] : Historical unit of area used in land measurement, particularly in surveying.

Are [a] : Historical metric unit of area, equal to 100 square meters.

Morgen [morgen] : Historical unit of area used in Germany and South Africa, varying between regions.

Dunam [dunam] : Unit of area used in the Middle East, equal to 1,000 square meters.

Last Update:

United States Dollar [USD] : The most widely used currency in global trade and finance, serving as the world's primary reserve currency.

Euro [EUR] : Official currency of the Eurozone, used by 20 European Union member states, making it the second-most traded currency.

Japanese Yen [JPY] : Japan's official currency, widely used as a reserve currency and in international trade, especially in Asia.

British Pound Sterling [GBP] : One of the oldest currencies still in use, known for its stability and influence in global finance.

Chinese Yuan Renminbi [CNY] : The official currency of China, increasingly used in international trade and financial transactions.

Canadian Dollar [CAD] : The official currency of Canada, widely traded due to the country's large commodity exports.

Swiss Franc [CHF] : Switzerland's official currency, known for its stability and use as a safe-haven currency.

Australian Dollar [AUD] : Australia's official currency, heavily influenced by commodity markets and trade with Asia.

Hong Kong Dollar [HKD] : Hong Kong's official currency, pegged to the US dollar and widely used in international finance.

Singapore Dollar [SGD] : Singapore's official currency, used in one of the world's leading financial centers.

Swedish Krona [SEK] : The official currency of Sweden, widely traded in European markets.

South Korean Won [KRW] : The currency of South Korea, a major player in the global technology and manufacturing sectors.

Norwegian Krone [NOK] : The official currency of Norway, strongly tied to oil and gas exports.

Mexican Peso [MXN] : Mexico's currency, the most traded in Latin America and closely tied to the US economy.

Indian Rupee [INR] : The official currency of India, one of the fastest-growing economies in the world.

Joule [J] : SI unit of energy, used universally in scientific contexts.

Kilojoule [kJ] : Metric unit of energy, equal to 1,000 joules.

Megajoule [MJ] : Metric unit of energy, equal to 1,000,000 joules.

Watt-Hour [Wh] : Energy used by a device with a power of one watt over one hour.

Kilowatt-Hour [kWh] : Common unit of energy used in electricity billing.

Calorie [cal] : Energy needed to raise the temperature of 1 gram of water by 1°C.

Kilocalorie [kcal] : Commonly referred to as a 'Calorie' in dietary contexts, equal to 1,000 calories.

British Thermal Unit [BTU] : Energy needed to heat one pound of water by one degree Fahrenheit.

Electronvolt [eV] : Energy gained by an electron moving through a potential difference of one volt.

Foot-Pound [ft·lb] : Energy transferred when a force of one pound acts through a distance of one foot.

Therm [thm] : Unit of energy used for natural gas, equal to 100,000 BTUs.

Cubic Meter per Second [m³/s] : SI unit of volumetric flow rate, representing one cubic meter of fluid moving per second.

Cubic Meter per Hour [m³/h] : Common unit for measuring flow rates in industrial contexts.

Cubic Meter per Day [m³/day] : Metric unit suitable for measuring daily fluid flows.

Liter per Second [L/s] : Metric unit of flow rate, representing one liter of fluid moving per second.

Liter per Minute [L/min] : Metric unit used in various applications, especially in liquid flows.

Milliliter per Second [mL/s] : Metric unit representing milliliters of fluid moving per second.

Kiloliter per Hour [kL/h] : Metric unit often used for large-scale industrial applications.

Gallon per Minute (US) [GPM] : Imperial unit of flow rate, used mainly in the US.

Gallon per Hour (US) [GPH] : Imperial unit, representing the flow of gallons per hour.

Gallon per Day (US) [GPD (US)] : Imperial unit representing the daily flow of gallons.

Million Gallons per Day (US) [MGD (US)] : Imperial unit used to measure large-scale water flows.

Gallon per Minute (Imperial) [GPM (Imp)] : Imperial unit used in the UK for flow rate measurements.

Cubic Foot per Second [ft³/s] : Imperial unit for flow rate, used in engineering and hydrology.

Cubic Foot per Minute [CFM] : Imperial unit, commonly used to measure airflow rates.

Barrel per Day [BPD] : Unit of flow rate used in the petroleum industry, referring to barrels per day.

Acre-Foot per Year [AFY] : Unit of flow rate commonly used in water resource management.

Newton [N] : SI unit of force, defined as the force required to accelerate a 1 kg mass by 1 m/s².

Kilonewton [kN] : Unit of force commonly used in engineering, equal to 1,000 Newtons.

Dyne [dyn] : CGS unit of force, often used in scientific applications, equivalent to 10⁻⁵ Newtons.

Pound-Force [lbf] : Imperial unit of force, commonly used in engineering and mechanics.

Ounce-Force [ozf] : Imperial unit of force, equal to 1/16 of a pound-force.

Kilogram-Force [kgf] : Metric unit of force, equivalent to the force exerted by 1 kg of mass in standard gravity.

Gram-Force [gf] : Metric unit of force, equivalent to the force exerted by 1 gram of mass in standard gravity.

Ton-Force (US) [tonf (US)] : Unit of force, commonly used in the US, equal to 2,000 pound-force.

Ton-Force (Imperial) [tonf (Imp)] : Unit of force, used in the UK, equal to 2,240 pound-force.

Poundal [pdl] : Unit of force in the FPS system, defined as the force needed to accelerate a 1 lb mass by 1 ft/s².

Kip [kip] : Unit of force equal to 1,000 pound-force, commonly used in structural engineering.

Sthène [sn] : Metric unit of force, equal to 1,000 Newtons. Used historically in Europe.

Hertz [Hz] : SI base unit for frequency, representing one cycle per second.

Kilohertz [kHz] : Metric unit of frequency equal to 1,000 cycles per second, commonly used in radio and audio contexts.

Megahertz [MHz] : Metric unit of frequency equal to 1,000,000 cycles per second, used in radio and electronics.

Gigahertz [GHz] : Metric unit of frequency equal to 1,000,000,000 cycles per second, used in computing and telecommunications.

Terahertz [THz] : Metric unit of frequency equal to 1 trillion cycles per second, used in spectroscopy and photonics.

Millihertz [mHz] : Metric unit of frequency equal to one-thousandth of a cycle per second, used in scientific measurements.

Microhertz [µHz] : Metric unit of frequency equal to one-millionth of a cycle per second, used in precise scientific measurements.

Nanohertz [nHz] : Metric unit of frequency equal to one-billionth of a cycle per second, used in astrophysics.

Revolutions per Minute [rpm] : Non-SI unit of frequency used to measure rotational speed.

Beats per Minute [bpm] : Unit of frequency used to measure tempo in music.

Cycles per Hour [cph] : Unit of frequency used in industrial processes.

Shake [shake] : Historical unit of frequency used in nuclear physics, equal to 10 nanoseconds.

Cycles per Day [cpd] : Unit of frequency used in geophysics and astronomy.

Meter [m] : SI base unit of length, widely used in science, engineering, and daily life.

Kilometer [km] : Metric unit of length commonly used for measuring large distances.

Centimeter [cm] : Metric unit of length commonly used in everyday measurements.

Millimeter [mm] : Metric unit of length used for very small measurements.

Mile [mi] : Imperial unit of length commonly used in the United States and the UK.

Yard [yd] : Imperial unit of length often used in the United States and the UK.

Foot [ft] : Imperial unit of length used in the United States and the UK.

Inch [in] : Imperial unit of length widely used in various applications.

Nautical Mile [NM] : Unit of length used in maritime and aviation contexts.

Angstrom [Å] : Unit of length used in physics and chemistry to measure atomic-scale distances.

Parsec [pc] : Unit of length used in astronomy, equal to about 3.26 light-years.

Light-Year [ly] : Distance that light travels in a vacuum in one year, used in astronomy.

Furlong [fur] : Historical unit of length used in agriculture.

Rod [rd] : Historical unit of length often used in land measurement.

Chain [ch] : Historical unit of length used in surveying.

Cubit [cub] : Ancient unit of length based on the forearm length.

League [lea] : Historical unit of length, used to measure large distances.

Kilogram [kg] : SI unit of mass, commonly used worldwide.

Gram [g] : Metric unit of mass, used for small weights.

Tonne [t] : Metric unit of mass, equal to 1,000 kilograms.

Carat [ct] : Unit of mass used for gemstones.

Milligram [mg] : Metric unit of mass, used for extremely small weights.

Microgram [µg] : Unit of mass equal to one-millionth of a gram, used in scientific contexts.

Pound [lb] : Imperial unit of mass, commonly used in the United States.

Ounce [oz] : Imperial unit of mass, used for smaller items.

Stone [st] : Imperial unit of mass, used in the UK for measuring body weight.

Slug [slug] : Unit of mass in the Imperial system, used in dynamics and physics.

Atomic Mass Unit [u] : Unit of mass used for atoms and molecules, equal to one-twelfth the mass of a carbon-12 atom.

Watt [W] : SI base unit of power, widely used in science, engineering, and everyday life.

Kilowatt [kW] : Metric unit of power commonly used to express larger power outputs.

Megawatt [MW] : Unit of power used to describe large-scale energy production or consumption.

Gigawatt [GW] : Unit of power commonly used for large power plants and electrical grids.

Horsepower [hp] : Imperial unit of power, commonly used to measure the power output of engines.

Kilocalorie per Hour [kcal/h] : Unit of power often used in heating and cooling systems.

BTU per Hour [BTU/h] : Unit of power used in heating, ventilation, and air conditioning.

Erg per Second [erg/s] : CGS unit of power, used in physics and astronomy.

Calorie per Second [cal/s] : Unit of power representing the rate of energy transfer.

Ton of Coal Equivalent [TCE] : Unit of power representing energy output of burning one ton of coal in one hour.

Boiler Horsepower [bhp] : Unit of power used for rating steam boilers.

Ton of Refrigeration [TR] : Unit of power used in refrigeration and air conditioning to describe heat extraction capacity.

Planck Power [Pp] : Power unit in Planck units, used in theoretical physics.

Foot-Pound per Second [ft·lbf/s] : Imperial unit of power representing the transfer of one foot-pound of energy per second.

Joule per Second [J/s] : Equivalent to one watt, often used to emphasize energy transfer.

Pascal [Pa] : SI base unit for pressure, used in scientific contexts.

Kilopascal [kPa] : Metric unit of pressure, equal to 1,000 Pascals.

Bar [bar] : Metric unit of pressure, commonly used in industry.

Atmosphere [atm] : Unit of pressure defined as the mean atmospheric pressure at sea level.

Pound per Square Inch [psi] : Imperial unit of pressure, used in various industries.

Torr [Torr] : Unit of pressure, approximately equal to 1 mmHg.

Millimeter of Mercury [mmHg] : Pressure unit used in medicine and meteorology.

Barye [Ba] : CGS unit of pressure, used in some scientific applications.

Poundal per Square Foot [pdl/ft²] : Obsolete unit of pressure in the FPS system of units.

Kilogram-Force per Square Centimeter [kgf/cm²] : Unit of pressure commonly used in former USSR countries and Japan.

Meters per Second [m/s] : SI base unit for speed, commonly used in scientific and engineering contexts.

Kilometers per Hour [km/h] : Metric unit for speed, widely used in transportation.

Miles per Hour [mph] : Imperial unit for speed, commonly used in the United States and the UK.

Feet per Second [ft/s] : Imperial unit for speed used in specific scientific and engineering fields.

Knots [kn] : Unit of speed used in maritime and aviation contexts, equal to one nautical mile per hour.

Speed of Light [c] : Fundamental constant, speed of light in a vacuum, used in physics.

Inches per Second [in/s] : Imperial unit of speed used in specialized engineering applications.

Mach Number [Mach] : Unit of speed based on the speed of sound, commonly used in aviation and aerospace.

Nautical Miles per Hour [NM/h] : Unit of speed equal to one nautical mile per hour, used in navigation.

Cubits per Hour [cubits/h] : Historical unit of speed based on cubit length, used in ancient civilizations.

Paces per Minute [paces/min] : Historical unit of speed based on human walking pace.

Furlongs per Fortnight [fur/fortnight] : Humorous unit of speed often used in scientific jokes.

Celsius [°C] : Metric unit for measuring temperature, commonly used worldwide.

Fahrenheit [°F] : Unit of temperature primarily used in the United States.

Kelvin [K] : SI base unit for thermodynamic temperature, used in scientific contexts.

Rankine [°R] : Temperature unit used in engineering, especially in thermodynamics.

Delisle [°De] : Historical temperature scale, now largely obsolete.

Newton [°N] : Historical temperature scale based on the expansion of water.

Réaumur [°Ré] : Historical temperature scale used in some European countries.

Rømer [°Rø] : Historical temperature scale, predecessor to Celsius.

Second [s] : SI base unit for time, commonly used worldwide.

Millisecond [ms] : A thousandth of a second, used in precise measurements.

Minute [min] : Unit of time equal to 60 seconds.

Hour [h] : Unit of time equal to 60 minutes.

Day [d] : Unit of time equal to 24 hours.

Week [wk] : Unit of time equal to 7 days.

Fortnight [fn] : Historical unit of time equal to 14 days.

Month [mo] : Average unit of time equal to approximately 30.44 days.

Year [yr] : Unit of time equal to 365.25 days (Julian year) or 365 days (calendar year).

Decade [dec.] : Unit of time equal to 10 years.

Century [cent.] : Unit of time equal to 100 years.

Millennium [kyr] : Unit of time equal to 1000 years.

Aeon [aeon] : Indefinite or very long period of time, used in geology as one billion years.

Shake [shake] : Very short unit of time, used in nuclear physics (10 nanoseconds).

Jiffy [jiffy] : Informal unit of time, variously defined in physics (often ~33 milliseconds).

Planck Time [tP] : Theoretical shortest measurable time interval in physics (~5.39×10^-44 seconds).

Newton Meter [Nm] : SI unit for torque, commonly used in physics and engineering.

Kilogram-Force Meter [kgf·m] : Torque generated by one kilogram-force acting at a radius of one meter.

Foot-Pound [ft·lb] : Imperial unit of torque, used in various mechanical applications.

Inch-Pound [in·lb] : Imperial unit of torque, equal to one pound-force acting at a one-inch radius.

Dyne-Centimeter [dyne·cm] : CGS unit of torque, used in scientific contexts.

Ounce-Inch [oz·in] : Torque unit used in some mechanical and engineering fields.

Poundal-Foot [pdl·ft] : Historical unit of torque in the FPS system.

Meter-Kilogram [m·kg] : Obsolete torque unit similar to the kilogram-force meter.

Liter [L] : Metric unit of volume, commonly used in daily life.

Milliliter [mL] : Metric unit of volume, used for small liquid measurements.

Cubic Meter [m³] : SI base unit for volume, used in scientific contexts.

Gallon (US) [gal] : Imperial unit of volume, commonly used in the United States.

Gallon (Imperial) [gal (Imp)] : Imperial unit of volume, used in the United Kingdom.

Cup (US) [cup] : Unit of volume commonly used in cooking in the United States.

Cup (Metric) [cup] : Metric unit of volume commonly used in cooking outside the US.

Tablespoon [tbsp] : Unit of volume used in cooking, typically for small amounts.

Teaspoon [tsp] : Smaller unit of volume used in cooking and recipes.

Cubic Inch [in³] : Imperial unit of volume, commonly used in engineering contexts.

Cubic Foot [ft³] : Imperial unit of volume, used in various industries.

Barrel (Oil) [bbl] : Unit of volume commonly used in the petroleum industry.

Bushel [bu] : Unit of volume used for dry goods.

Peck [pk] : Unit of volume used for dry goods, equivalent to 1/4 bushel.

Fluid Ounce (US) [fl oz] : Imperial unit of volume, commonly used for small liquid measurements.

Cubic Millimeter [mm³] : Smallest metric unit of volume, used in scientific contexts.

Cubic Centimeter [cm³] : Metric unit of volume, equivalent to a milliliter.