This is a list of scientific units named after people. For other lists of eponyms (names derived from people) see eponym. By convention, the name of the unit is properly written starting with a lowercase letter (except where any word would be capitalized), but the first letter of its symbol is a capital letter if it is derived from a proper name.
SI units
- ampere (A), electric currentAndré-Marie Ampère
- becquerel (Bq), radioactivityHenri Becquerel
- degree Celsius (°C), temperatureAnders Celsius
- coulomb (C), electric chargeCharles-Augustin de Coulomb
- farad (F), capacitanceMichael Faraday
- gray (Gy), absorbed dose of radiation – Louis Harold Gray
- henry (H), inductanceJoseph Henry
- hertz (Hz), frequencyHeinrich Rudolf Hertz
- joule (J), energy, work, heatJames Prescott Joule
- kelvin (K), thermodynamic temperatureLord Kelvin
- newton (N), forceIsaac Newton
- ohm (Ω), electrical resistanceGeorg Ohm
- pascal (Pa), pressureBlaise Pascal
- siemens (S), electrical conductanceWerner von Siemens
- sievert (Sv), radiation dose equivalentRolf Sievert
- tesla (T), magnetic flux densityNikola Tesla
- volt (V), electric potential, electromotive forceAlessandro Volta
- watt (W), power, radiant fluxJames Watt
- weber (Wb), magnetic fluxWilhelm Eduard Weber
CGS units
- biot (Bi), electric currentJean-Baptiste Biot
- buckingham (B), electric quadrupole momentA. David Buckingham
- debye (D), electric dipole momentPeter Debye
- eotvos (E), gravitational gradientLoránd Eötvös
- galileo (Gal), accelerationGalileo Galilei
- gauss (G or Gs), magnetic flux densityCarl Friedrich Gauss
- gilbert (Gb), magnetomotive forceWilliam Gilbert
- goeppert-mayer (GM), two-photon absorption cross sectionMaria Goeppert Mayer
- kayser (kayser), wavenumberHeinrich Kayser
- maxwell (Mx), magnetic fluxJames Clerk Maxwell
- oersted (Oe), magnetic field strengthHans Christian Ørsted
- poise (P), dynamic viscosityJean Léonard Marie Poiseuille
- Rayl or Rayleigh (Rayl), acoustic impedanceJohn William Strutt, 3rd Baron Rayleigh
- rayleigh (R), photon fluxRobert Strutt, 4th Baron Rayleigh
- stokes (S or St), kinematic viscosityGeorge Gabriel Stokes
No longer in use
- franklin (Fr), electric chargeBenjamin Franklin
- clausius (Cl), entropyRudolf Clausius
Others
- angstrom (Å), distanceAnders Jonas Ångström
- baud (Bd), symbol rateÉmile Baudot
- Bark scale, psychoacoustical scaleHeinrich Barkhausen
- brewster (B), stress optic coefficientDavid Brewster
- centimorgan (cM), recombination frequencyThomas Hunt Morgan
- curie (Ci), radioactivityMarie and Pierre Curie
- dalton (Da), atomic massJohn Dalton
- darcy (D), permeability,Henry Darcy <!-- certainly in use in the oil industry -->
- decibel (dB) dimensionless proportions and ratios, e.g. relative power levelsAlexander Graham Bell
- degree Fahrenheit (°F), temperatureDaniel Gabriel Fahrenheit
- degree Rankine (°R), temperatureWilliam John Macquorn Rankine
- Dobson unit (DU), atmospheric ozoneGordon Dobson
- erlang (E), dimensionless volume of telecommunications trafficAgner Krarup Erlang
- fermi (fm), distanceEnrico Fermi
- hartley (Hart), informationRalph Hartley
- hartree (Ha), energyDouglas Hartree
- Hounsfield scale, radiodensityGodfrey Newbold Hounsfield
- jansky (Jy), electromagnetic fluxKarl Jansky
- langley (ly), solar radiationSamuel Pierpont Langley
- langmuir (L), gas exposure doseIrving Langmuir
- neper (Np), relative power levelJohn Napier
- degree Öchsle (°Oe), densityFerdinand Öchsle
- Rockwell scale (HR), indentation hardnessStanley Rockwell
- röntgen (R), dosage of X-rays or gamma radiationWilhelm Röntgen
- Richter magnitude, earthquake powerCharles Francis Richter
- Scoville units, capsaicin content of chili peppersWilbur Scoville
- shannon (Sh), informationClaude Shannon
- siegbahn (xu), distanceManne Siegbahn
- svedberg (S or Sv), sedimentation rateTheodor Svedberg
- sverdrup (Sv), volume transport rateHarald Sverdrup
- torr (Torr), pressureEvangelista Torricelli
- troland (Td), luminance (human eye)Leonard Troland
Natural unit systems
- Planck unitsMax Planck
- Stoney unitsGeorge Stoney
No longer in use
- Mercalli intensity scale, earthquake effectsGiuseppe Mercalli
- degree Réaumur (°R), temperature René Antoine Ferchault de Réaumur
- degree Delisle (°D), temperatureJoseph-Nicolas Delisle
- degree Newton (°N), temperatureIsaac Newton
- degree Rømer (°Rø), temperatureOle Rømer
- degree Baumé (°Bé), densityAntoine Baumé
- einstein (E), photochemistryAlbert Einstein
- poncelet (p), powerJean-Victor Poncelet
- faraday (Fd), electrical chargeMichael Faraday
See also
- List of eponyms
- Lists of etymologies
- List of obsolete units of measurement
- List of unusual units of measurement
- List of humorous units of measurement
- List of scientists whose names are used as SI units
- List of scientists whose names are used as non SI units