- online unit conversion - einheiten umrechnen - convertir les unités

Convert units of acceleration, angle, area, energy/work, force, coefficient of heat transfer, length, mass, mass density, mass concentration, power, pressure/stress, time, velocity, viscosity, volume and temperature.

The conversion factors are based on data published in the "Guide for the Use of the International System of Units" by B. N. Taylor of the Physics Laboratory, National Institute of Standards and Technology Gaithersburg, MD20899-0001, 1995.

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Since I am only human, I can't guarantee the correctness of the programmes results! So please check them if there is a risk that incorrect results might cause damage. If you find a bug or if you have any suggestion for improvement, I would be very grateful for writing me.

table of SI units

quantity	name	symbol
SI base units
length	meter	m
mass	kg	kg
time	second	s
electric current	ampere	A
thermodynamic temperature	kelvin	K
amount of substance	mole	mol
luminous intensity	candela	cd
SI derived unit
area	square meter	m²
volume	cubic meter	m³
speed, velocity	meter per second	m/s
acceleration	meter per second squared	m/s²
wave number	reciprocal meter	1/m
mass density	kilogram per cubic meter	kg/m³
specific volume	cubic meter per kilogram	m³/kg
current density	ampere per square meter	A/m²
magnetic field strength	ampere per meter	A/m
amount of substance concentration	mole per cubic meter	mol/m³
luminance	candela per square meter	cd/m²
SI derived units with special symbols
plane angle	radian	1 [rad]
solid angle	steradian	1 [sr]
frequency	Hertz	1/s [Hz]
force	Newton	(kg m)/s² [N]
pressure, stress	Pascal	N/m² [Pa]
energy, work	Joule	N m [J]
power, radiant flux	Watt	J/s [W]
electric charge	Coulomb	s A [C]
electric potential	Volt	W/A [V]
capacitance	Farad	C/V [F]
electric resistance	Ohm	V/A [Ω]
electric conductance	Siemens	A/V [S]
magnetic flux	Weber	V s [Wb]
magnetic flux density	Tesla	Wb/m² [T]
inductance	Henry	Wb/A [H]
Celsius temperature	degree Celsius	K [°C]
luminous flux	lumen	cd sr [lm]
illuminance	lux	lm/m² [lx]
activity	Becquerel	1/s [Bq]
absorbed dose	Gray	J/kg [Gy]
dose equivalent	Sievert	J/kg [Sv]

units accepted for use with the SI

time: minute (min), hour (h), day (d)
plane angle: degree (°), minute (‘), second (“)
liter (l, L), metric ton (t), electron volt (eV), atomic mass (u), Neper, bel, shannon and other highly specialised units.

units temporarily accepted for use with the SI

nautical mile, knot, Ångström (Å), are (a), hectare (ha), barn (b), bar (bar), gal (Gal), curie (Ci), roentgen (R), rem (rem)

units not accepted for use with the SI

British thermal unit (Btu), calorie (cal thermochemical), dyne (dyn), erg (erg), fermi (fermi), gamma, gauss (Gs, G), kilogram-force (kgf), lambda (volume), maxwell (Mx), metric carat (metric carat), micron (m), oersted (Oe), parts per billion (ppb), parts per million (ppm), parts per trillion (ppt), phot (ph), poise (P), standard atmosphere (atm), stere (st), stokes (St), stilb (sb), torr (Torr), x unit (xu), gal (Gal), gon (also called grade) (gon), mil, revolution (r), acre, circular mil, square foot (ft²), square inch (in²), square mile (mi²), square yard (yd²), foot poundal, foot pound-force (ft lbf), quad , therm, ton of TNT (energy equivalent), kilogram-force (kgf), kilopond (kilogram-force) (kp), kip, ounce-force (ozf), poundal, pound-force (lbf), ton-force (2000 lbf), astronomical unit (AU), chain (ch), fathom, foot (ft), inch (in), light year (l.y.), microinch, micron (m), mil (0.001 in), mile, parsec (pc), pica (computer) (1/ 6 in), pica (printer's), point (computer) (1/ 72 in), point (printer's), rod (rd), yard (yd), carat, grain (gr), hundredweight (long, 112 lb), hundredweight (short, 100 lb), ounce (oz), ounce, pennyweight (dwt), pound (lb), slug (slug), ton assay (AT), ton long (2240 lb), horsepower, atmosphere (atm), centimeter of mercury (mmHg), centimeter of water conventional (cmH2O), centipoise (cP), centistokes (cSt), barrel (bbl), bushel (bu), cord, cup, fluid ounce (fl oz), gallon (gal), gill (gi), peck (pk), pint (dry pt), pint (liq pt), quart (dry qt), quart (liq qt), tablespoon, teaspoon, stone, Fahrenheit (°F), Rankine (°R)

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