| Symbol
| (the (*) indicates non-standard units) | compute: |
|---|
| % | percent | 10–2 |
| A | Ampere | A |
| a | year | 3.15576×10+7s |
| a0 | (Bohr radius) | 5.29177×10–11m |
| al | light-year | 9.46053×10+15m |
| alpha | (fine structure constant) | 7.29735×10–3 |
| Angstroem | Angstroem(0.1nm) | 10–10m |
| Angstrom | Angstroem(0.1nm) | 10–10m |
| arcm | minute of arc | 4.62963×10–5 |
| arcmin | minute of arc | 4.62963×10–5 |
| arcs | second of arc | 7.71605×10–7 |
| arcsec | second of arc | 7.71605×10–7 |
| atm | atmosphere | 1.01325×10+5Pa (kg⋅m–1⋅s–2) |
| AU | astronomical unit | 1.49598×10+11m |
| au | atomic unit | |
| bar | bar(10+5Pa) | 10+5Pa (kg⋅m–1⋅s–2) |
| barn | barn(10–28m2) | 10–28m+2 |
| beam | beam | |
| bit | binary information unit | |
| byte | byte(8bits) | |
| C | Coulomb | C (s⋅A) |
| c | c(speed_of_light) | 2.99792×10+8m⋅s–1 |
| cal | calorie | 4.1854J (kg⋅m+2⋅s–2) |
| cd | candela(lumen/sr) | cd |
| cKayser | centi-Kayser(cm–1) | m–1 |
| Crab | Crab (X-ray) flux | 1.43×10–11kg⋅s–3 |
| ct | count | |
| D | Debye (dipole) | 3.33333×10–30m⋅s⋅A |
| d | day | 8.64×10+4s |
| deg | degree | 2.77778×10–3 |
| degC | Celsius | K |
| degF | Fahrenheit | 5.55556×10–1K |
| degree | degree | 2.77778×10–3 |
| dyn | dyne(10–5N) | 10–5N (kg⋅m⋅s–2) |
| e | e(electron_charge) | 1.60218×10–19C (s⋅A) |
| Earth | Earth (geo) unit | |
| eps0 | (electric constant) | 8.85419×10–12kg–1⋅m–3⋅s+4⋅A+2 |
| erg | erg(10–7J) | 10–7J (kg⋅m+2⋅s–2) |
| eV | electron-Volt | 1.60218×10–19J (kg⋅m+2⋅s–2) |
| F | Farad | F (kg–1⋅m–2⋅s+4⋅A+2) |
| G | G(gravitation constant) | 6.673×10–11kg–1⋅m+3⋅s–2 |
| g | gram | 10–3kg |
| gauss | Gauss(10–4T) | 10–4T (kg⋅s–2⋅A–1) |
| geoMass | Earth mass | 5.9742×10+24kg |
| H | Henry | H (kg⋅m+2⋅s–2⋅A–2) |
| h | hour | 3.6×10+3s |
| h | hour | 3.6×10+3s |
| \h | hbar(Planck constant) | 1.05457×10–34kg⋅m+2⋅s–1 |
| hr | hour(use 'h') | 3.6×10+3s |
| Hz | Herz | Hz (s–1) |
| inch | inch | 2.54×10–2m |
| J | Joule | J (kg⋅m+2⋅s–2) |
| JD | Julian Day | 8.64×10+4s |
| jovMass | Jupiter mass | 1.8986×10+27kg |
| Jup | Jupiter (jovian) unit | |
| Jy | Jansky(10–26W/m2/Hz) | 10–26kg⋅s–2 |
| K | Kelvin | K |
| k | k(Boltzmann) | 1.38065×10–23kg⋅m+2⋅s–2⋅K–1 |
| kg | kilogram | kg |
| l | litre | 10–3m+3 |
| lm | lumen | 7.95775×10–2cd |
| Lsun | solar luminosity | 3.826×10+26W (kg⋅m+2⋅s–3) |
| lx | lux(lm/m2) | 7.95775×10–2m–2⋅cd |
| lyr | light-year (c*yr) | 9.46053×10+15m |
| m | metre | m |
| mag | magnitude | mag |
| mas | milli-second of arc | 7.71605×10–10 |
| me | me(electron_mass) | 9.10938×10–31kg |
| Mgeo | Earth mass | 5.9742×10+24kg |
| min | minute | 6×10+1s |
| MJD | Mod. Julian Date (JD–2400000.5) | 8.64×10+4s |
| Mjup | Jupiter mass | 1.8986×10+27kg |
| mmHg | mercury_mm | 1.33322×10+2Pa (kg⋅m–1⋅s–2) |
| mol | mole | mol |
| month | month | |
| mp | mp(proton_mass) | 1.67266×10–27kg |
| Msun | solar mass | 1.989×10+30kg |
| mu0 | (magnetic constant) | 1.25664×10–6kg⋅m⋅s–2⋅A–2 |
| muB | (Bohr magneton) | 9.27401×10–28m+2⋅A |
| N | Newton | N (kg⋅m⋅s–2) |
| Ohm | Ohm(V/A) | Ohm (kg⋅m+2⋅s–3⋅A–2) |
| Pa | Pascal | Pa (kg⋅m–1⋅s–2) |
| pc | parsec | 3.0857×10+16m |
| ph | photon | |
| pi | pi(=3.14...) | 3.14159 |
| pix | pixel | |
| ppm | part per million | 10–6 |
| R | R(gas_constant) | 8.3143kg⋅m+2⋅s–2⋅K–1⋅mol–1 |
| rad | radian | 1.59155×10–1 |
| Rgeo | Earth radius (eq) | 6.3781×10+6m |
| Rjup | Jupiter radius (eq) | 7.1492×10+7m |
| Rsun | solar radius | 6.9599×10+8m |
| Ry | Rydberg(13.6eV) | 2.17989×10–18J (kg⋅m+2⋅s–2) |
| S | Siemens(A/V) | S (kg–1⋅m–2⋅s+3⋅A+2) |
| s | second | s |
| sec | second (use 's') | s |
| solLum | solar luminosity | 3.826×10+26W (kg⋅m+2⋅s–3) |
| solMass | solar mass | 1.989×10+30kg |
| solRad | solar radius | 6.9599×10+8m |
| sr | steradian | 7.95775×10–2 |
| Sun | Solar unit | |
| T | Tesla | T (kg⋅s–2⋅A–1) |
| t | ton | 10+3kg |
| u | atomic mass unit | 1.66054×10–27kg |
| uas | micro-second of arc | 7.71605×10–13 |
| V | Volt | V (kg⋅m+2⋅s–3⋅A–1) |
| W | Watt | W (kg⋅m+2⋅s–3) |
| Wb | Weber(V⋅s) | Wb (kg⋅m+2⋅s–2⋅A–1) |
| yr | year | 3.15576×10+7s |
| ° | degree | 2.77778×10–3 |
| °C | Celsius | K |
| °F | Fahrenheit | 5.55556×10–1K |
| µ0 | (magnetic constant) | 1.25664×10–6kg⋅m⋅s–2⋅A–2 |
| µas | micro-second of arc | 7.71605×10–13 |
| Å | Angstroem(0.1nm) | 10–10m |
| "d:m:s" | degree arcminute arcsecond (sexagesimal angle from degree) | 2.77778×10–3 |
| "date" | Fully qualified date | 8.64×10+4s |
| "datime" | Fully qualified date/time | 8.64×10+4s |
| "day" | Day of month number | 8.64×10+4s |
| "h:m:s" | hour minutes seconds (sexagesimal time from hours) | 3.6×10+3s |
| "h:m" | hour minutes (sexagesimal time from hours) | 3.6×10+3s |
| "HH:MM:SS" | hour minutes seconds (sexagesimal time) | 3.6×10+3s |
| "HHMMSS" | hour minutes seconds (sexagesimal time without separator) | 3.6×10+3s |
| "m:s" | minutes seconds (sexagesimal time from minutes) | 6×10+1s |
| "MM/YY" | Month/Year(from 1900) | 2.6298×10+6s |
| "MM/yy" | Month/Year(from 2000) | 2.6298×10+6s |
| "month" | Month name or number | 2.6298×10+6s |
| "Y-M-D,h:m:s" | Fully qualified date/time | 8.64×10+4s |
| | | |
| ===List of possible conversion ===================== | | |
| — => s (Angle to time) | | |
| m => Hz (Wavelength to frequency) | | |
| Hz => J (Frequency to Energy) | | |
| m => J (Wavelength to Energy) | | |
| K => J (Temperature to Energy) | | |
| kg => J (Mass to Energy) | | |
| m => cKayser (Wavelength tp Wavenumber) | | |
| cKayser => Hz (Wavenumber to frequency) | | |
| cKayser => J (Wavenumber to Energy) | | |