| Symbol | Name | Category | Value |
| ° | Degree | Angle | π/180 |
| °C | Celsius | Temperature | K-273.15 |
| °F | Fahrenheit | Temperature | (9/5)K-459.67 |
| °Ra | Rankine | Temperature | |
| °Re | Réaumur | Temperature | |
| A | Ampere | Electric Current | |
| acre | Acre | Area | 4046.8564224 m2 |
| amp | Ampere | Electric Current | |
| Angstrom | Angstrom | Length | m/1010 |
| atm | Atmosphere | Pressure | 101,325 kg/m s2 |
| B | Byte | Information | 8 bit |
| bar | Bar | Pressure | 100,000 kg/m s2 |
| barn | Barns | Area | m2/1028 |
| bit | Bit | Information | |
| bohr | Bohr | Length | 52,918 m /1011 |
| BTU | British thermal unit | Energy | 1055.05585262 kg m2/s2 |
| byte | Byte | Information | 8 bit |
| c | Speed of light | Velocity | 299,792,458 m/s |
| C | Coulumb | Charge | A s |
| cal | Calorie | Energy | 4.1868 kg m2/s2 |
| cd | Candela | Luminous intensity | |
| cm | Centimeter | Length | m/100 |
| coul | Coulumb | Charge | A s |
| day | Day | Time | 86,400 s |
| deg | Degree | Angle | π/180 |
| dm | Decimeter | Length | m/10 |
| dpi | Dots per inch | Resolution | 39.3700787401575/m |
| dyn | Dyne | Force | kg m/100,000 s2 |
| dyne | Dyne | Force | kg m/100,000 s2 |
| e | Number e | Constant | 2.7182818284590451 |
| e | Elementary charge | Charge | 1.60217648740*1014 As |
| erg | Unit of energy/work | Energy | 10-722 |
| F | Farad | Capacitance | A2s4/kg m2 |
| farad | Farad | Capacitance | A2s4/kg m2 |
| ft | Foot | Length | 0.3048 m |
| furlong | Furlong | Length | 201.168 m |
| g | Gravitational acceleration | Viscosity, dynamic | 9.80665 m/s2 |
| G | Gauss | Magnetic flux density | kg/ 10,000 A*s2 |
| GN | Newtonian constant of gravitaion | Constant | 6.6742867*10-11 m3/kg s2 |
| gal | Gallon | Volume | 0.0037854119678 m3 |
| gauss | Gauss | Magnetic flux density | kg/ 10,000 A*s2 |
| GB | Gigabyte | Information | 8,000,000,000 bit |
| GHz | Gigahertz | Frequency | 1,000,000,000/s |
| GiB | Gibibyte | Information | 8589934592 bit |
| GJ | Gigajoule | Energy | 1,000,000,000 kg m2/s2 |
| gm | Gram | Mass | kg/1000 |
| GN | Giganewton | Force | 1,000,000,000 kg m/s2 |
| gon | Grad | angle | π/200 |
| GPa | Gigapascal | Pressure | 1,000,000,000 kg/m s2 |
| grad | Grad | angle | π/200 |
| GW | Gigawatt | Power | 1,000,000,000 kg m2/s3 |
| Gy | Gray | Dose | m2/s2 |
| h | Planck constant | Constant | 6.6260689633*10-34 kg m2/s |
| H | Henry | Induction | kg m2/s2A2 |
| hectare | Hectare | Area | 10,000 m2 |
| henry | Henry | Induction | kg m2/s2A2 |
| hhp | Water horsepower | Power | 746.043 kg m2/s3 |
| hp | Horsepower | Power | 745.69987158227 kg m2/s3 |
| hr | Hour | Time | 3600 s |
| Hz | Hertz | Frequency | 1/s |
| i | Imaginary unit | constant | -11/2 |
| in | Inch | Length | 0.0254 m |
| J | Joule | Energy | kg m2/s2 |
| joule | Joule | Energy | kg m2/s2 |
| k | Boltsmann constant | Constant | 1.380650424*10-23 kg m2/K s2 |
| K | Kelvin | Temperature | |
| kA | Kiloampere | Electric current | 1000 A |
| katal | Katal | Catalytic activity | mol/s |
| kB | Kilobyte | Information | 8000 bit |
| kcal | Kilocalorie | Energy | 4186.8 kg m2/s2 |
| kg | Kilogram | Mass | |
| kgf | Kilogram Force | Force | 9.80665 kg m/s2 |
| kHz | Kilohertz | Frequency | 1000/s |
| kiB | Kibibyte | Information | 8192 bit |
| kip | Kip | Force | 4448.2216152605 kg m/s2 |
| kJ | Kilojoule | Energy | 1000 kg m2/s2 |
| km | Kilometer | Length | 1000 m |
| kmol | Kilomole | Substance | 1000 mol |
| kn | Knot | Velocity | 463/900 m/s |
| kN | Kilonewton | Force | 1000 kg m/s2 |
| knot | Knot | Velocity | 463/900 m/s |
| kPa | Kilopascal | Pressure | 1000 kg/m s2 |
| kph | Kilometers per hour | Velocity | 5/18 m/s |
| ks | Kilosecond | Time | 1000 s |
| ksf | Kilo-pounds per square foot | Pressure | 47880.2589803358 Pa |
| ksi | Kilo-pounds per square inch | Pressure | 6894757.29316836 Pa |
| kV | Kilovolts | Potential | 1000 m2kg/s3A |
| kW | Kilowatt | Power | 1000 kg m2/s3 |
| kΩ | Kiloohm | Resistance | 1000 kg m2/s3A2 |
| L | Liter | Volume | m3/1000 |
| lb | Pound | Mass | 0.45359237 kg |
| lbf | Pound force | Force | 4.4482216152605 kg m/s2 |
| liter | Liter | Volume | m3/1000 |
| lm | Lumen | luminous intensity | cd |
| lx | Lux | Illuminance | cd/m2 |
| m | Meter | Length | |
| mA | Milliampere | Electric Current | A/1000 |
| MB | Megabyte | Information | 8,000,000 bit |
| mC | Millicoulumb | Charge | A s/1000 |
| me | Electron mass | Mass | 9.1093821545*10-31 kg |
| mF | Millifarad | Capacitance | A2s4/1000 kg m2 |
| mg | Milligram | Mass | kg/1,000,000 |
| Mg | Megagram | Mass | 1000 kg |
| mH | Millihenry | Inductance | kg m2/1000 s2A2 |
| MHz | Megahertz | Frequency | 1,000,000/s |
| mi | Mile | Length | 1609.344 m |
| MiB | Mebibytes | Information | 8,388,608 bit |
| micron | Micrometer | Length | m/1,000,000 |
| mile | Mile | Length | 1609.344 m |
| min | Minute | Time | 60 s |
| mJ | Millijoule | Energy | kg m2/1000 s2 |
| MJ | Megajoule | Energy | 1,000,000 kg m2/s2 |
| mL | Millileter | Volume | m3/1,000,000 |
| mm | Millimeter | Length | m/1000 |
| mmole | Millimole | Substance | mol/1000 |
| mn | Neutron mass | Mass | 1.67492721184*10-27 kg |
| mN | Millinewton | Force | kg m/1000 s2 |
| MN | Meganewton | Force | 1,000,000 kg m/s2 |
| mol | Mole | Substance | |
| mole | Mole | Substance | |
| mp | Proton mass | Mass | 1.67262163783*10-27 kg |
| MPa | Megapascal | Pressure | 1,000,000 kg/m s2 |
| mph | Miles per hour | Velocity | 1397/3125 m/s |
| ms | Millisecond | Time | s/1000 |
| mu | Unified atomic mass | Mass | 1.6605388628*10-27 kg |
| mV | Millivolts | Potential | m2kg/1000 s3A |
| mW | Milliwatts | Power | kg m2/1000 s3 |
| MW | Megawatts | Power | 1,000,000 kg m2/s3 |
| MΩ | Megaohm | Resistance | 1,000,000 kg m2/s3A2 |
| N | Newton | Force | kg m/s2 |
| NA | Avogadro's number | Constant | 6.022141510*1023 / mol |
| nA | Nanoampere | Current | A/1,000,000,000 |
| nC | Nanocoulumb | Charge | A s/1,000,000,000 |
| nF | Nanofarad | Capacitance | A2s4/1,000,000,000 kg m2 |
| nm | Nanometer | Length | m/1,000,000,000 |
| ns | Nanosecond | Time | s/1,000,000,000 |
| nV | Nanovolts | Potential | m2kg/1,000,000,000 s3A |
| nW | Nanowatts | Power | kg m2/1,000,000,000 s3 |
| ohm | Ohm | Resistance | kg m2/s3A2 |
| oz | Ounce | Mass | 0.028349523125 kg |
| P | Poise | Viscosity, dynamic | kg/10 m s |
| pA | Picoampere | Electric current | A/1012 |
| Pa | Pascal | Pressure | kg/m s2 |
| pC | Picocoulumb | Charge | A s/1012 |
| pF | Picofarad | Capacitance | A2s4/1012 kg m2 |
| pm | Picometer | Length | m/1012 |
| poise | Poise | Viscosity, dynamic | kg/10 m s |
| ps | Picosecond | Time | s/1012 |
| psf | Pounds per square foot | Pressure | 47.8802589803358 kg/m s2 |
| psi | Pounds per square inch | Pressure | 6894.75729316836 kg/m s2 |
| pV | Picovolts | Potential | m2kg/1012 s3A |
| pW | Picowatts | Power | kg m2/1012 s3 |
| R | Gas constant | Constant | 8.31447215 kg m2/K mol s2 |
| rad | Radian | Angle | 1 |
| radpm | Radians per minute | Frequency | π/30s |
| rev | Revolution | Angle | 2π |
| rpm | Revolutions per minute | Frequency | 1/60s |
| s | Second | Time | |
| sec | Second | Time | |
| slug | Slug | Mass | 14.5939029372064 kg |
| Smoot | Smoot | Length | 1.7018 m |
| St | Stokes | Viscosity, kinematic | m2/10,000 s |
| stokes | Stokes | Viscosity, kinematic | m2/10,000 s |
| Sv | Sievert | Dose | m2/s2 |
| t | Metric ton | Mass | 1000 kg |
| T | Tesla | Magnetic flux density | kg/A s2 |
| TB | Terabyte | information | 8,000,000,000,000 bit |
| tesla | Tesla | Magnetic flux density | kg/A s2 |
| TiB | Tebibyte | Information | 8,796,093,022,208 bit |
| TJ | Terajoule | Energy | 1012 kg m2/s2 |
| TN | Teranewton | Force | 1012 kg m/s2 |
| ton | Ton | Mass | 907.18474 kg |
| tonf | Ton Force | Force | 8896.443230521 kg m/s2 |
| tonne | Metric Ton | Mass | 1000 kg |
| tonnef | Metric Ton Force | Force | 9806.65 kg m/s2 |
| torr | Torr | Pressure | 133.322368421053 kg/m s2 |
| V | Volts | Potential | m2kg/s3A |
| volt | Volts | Potential | m2kg/s3A |
| W | Watt | Power | kg m2/s3 |
| watt | Watt | power | kg m2/s3 |
| yd | Yard | length | 0.9144 m |
| yr | Year | Time | 31,556,925.975 s |
| μA | Microampere | Current | A/1,000,000 |
| μC | Microcoulumb | Charge | A s/1,000,000 |
| μF | Microfarad | Capacitance | A2s4/1,000,000 kg m2 |
| μg | Microgram | Mass | kg/1,000,000 |
| μH | Microhenry | Inductance | kg m2/1,000,000 s2A2 |
| μm | Micrometer | Length | m/1,000,000 |
| μmol | Micromole | Substance | mol/1,000,000 |
| μN | Micronewton | Force | kg m/1,000,000 s2 |
| μs | Microsecond | Time | s/1,000,000 |
| μV | Microvolts | Potential | m2kg/1,000,000 s3A |
| μW | Microwatt | Power | kg m2/1,000,000 s3 |
| Ω | Ohm | Resistance | kg m2/s3A2 |
| π | Number pi | Constant | 3.1415926535897931 |
| &mu0; | Magnetic constant|| Constant | 4&pi*10-7 kg m/s2 A2 |