Units Calculator |
The Fourmilab Units Calculator is based upon the GNU Units utility. It supports expressions in the “Convert” and “To” fields in the same syntax as described in the GNU Units manual. If the To field is left blank, the definition of the unit in the Convert field will be shown in terms of fundamental units. Entering “?” in the To field shows all standard units with the same dimensions as the expression in the Convert field. A total of 3460 linear units, 109 nonlinear units, and 109 prefixes are defined. The most common are listed below; clicking them copies the unit to the input field most recently clicked.
You can define your own units or save intermediate results by prefixing the expression in the Convert field with a variable name beginning with a capital letter followed by letters and numbers (for example “Orbit”). Definitions are shown in the light blue box, and may be used in either the Convert or To fields. Definitions are lost when you reload the page, but may be copied from the definitions box and pasted back later, then reloaded with the “Load” button.
Length: angstrom astronomicalunit cable caliber chain earthradius fathom fermi foot furlong hand inch league lightyear link metre micron mile nauticalmile parsec pica plancklength point rod yard
Mass: atomicmassunit carat dalton dram electronmass grain gram kilogram longton neutronmass ounce pennyweight planckmass pound protonmass quintal slug stone ton tonne troyounce
Time: calendaryear century day decade fortnight gregorianyear hms hour julianyear leapyear lunarmonth millennium minute month plancktime saros second shake siderealday siderealyear synodicmonth time watch week year
Energy: barreloil britishthermalunit btu calorie Calorie electronvolt erg hiroshima joule kWh kcal_mol quad tnt
Force: dyne lbf newton poundal slugf
Pressure: atmosphere bar inH2O inHg mmHg pascal psi torr
Area: A4paper Apaper acre barn hectare legalsize section township USacre
Volume: acrefoot barrel bushel cc cord fluidounce gallon hogshead imperialgallon imperialpint imperialquart jeroboam jigger litre magnum melchior melchizedek methuselah metriccup midas minim nebuchadnezzar peck pint primat quart rehoboam salmanazar solomon sovereign stere tablespoon teaspoon uscup winebottle
Temperature: degC degF degK degR kelvin plancktemperature tempC tempF tempK tempR
Angle: arcminute arcsecond circle degree dms pi quadrant radian revolution rightangle sextant
Solid Angle: sphere sphericalrightangle squaredegree squareminute squaresecond steradian
Velocity: c fps knot kph mach mph
Acceleration: force galileo gravity
Viscosity: poise reyn
Charge: coulomb e
Current: ampere gilbert
Capacitance: farad pf
Resistance: kilohm megohm ohm
Inductance: henry mh
Conductance: mho siemens
Electric Potential: volt
Magnetic Field: gauss oersted tesla
Magnetic Flux: maxwell weber
Luminous Intensity: candela candle lumen
Luminance: footcandle footlambert lambert lux metercandle vmag
Constants: alpha boltzmann c epsilon0 gasconstant G hbar k_C mu0 pi stefanboltzmann wiendisplacement Z0
Prefixes:
deka
hecto
kilo
mega
giga
tera
peta
exa
zetta
yotta
deci
centi
milli
micro
nano
pico
femto
atto
zepto
yocto
Astronomy:
sunmass
mercurymass
venusmass
earthmass
moonmass
marsmass
jupitermass
saturnmass
uranusmass
neptunemass
plutomass
sunradius
mercuryradius
venusradius
earthradius
moonradius
marsradius
jupiterradius
saturnradius
uranusradius
neptuneradius
plutoradius
Functions: acosh() acos() asinh() asin() atanh() atan() cosh() cos() cuberoot() exp() ln() log() sinh() sin() sqrt() tanh() tan()
Currencies:
US$
EUR
JPY
GBP
AUD
CAD
CHF
CNH
SEK
NZD
MXN
SGD
HKD
NOK
KRW
TRY
RUB
INR
BRL
ZAR
bitcoin
goldprice
silverprice
by John Walker July 2019 |
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