Unit Conversions (advanced) is a catalogue on this site: 55 calculators sit under it, each covering one entry in the scheme. This page is the index that explains what the scheme is for, how an entry is read, and where the boundaries of the classification fall.
It is a stub. The full article will set out the governing instrument, the structure of the catalogue, and the decisions a reader has to make before picking an entry, because choosing the wrong entry is the common failure and it is rarely obvious from the entry itself.
Related calculators
- API gravity to density at 60 °F
- Pressure-time integral, bar·s to Pa·s
- Barrels (petroleum) to US gallons
- Petroleum flow, barrels per day to m³/h
- Brake horsepower to kW
- Heat-transfer coefficient, Imperial to SI
- Cable length to metres (nautical)
- cSt to Saybolt Universal Seconds (low range)
- Fahrenheit to Kelvin
- CFM to m³/h (ventilation)
- CO₂ per MJ equivalence to per GJ
- Carbon intensity, nm basis to km basis
- Gigawatt-hours to terajoules
- Gray to Rad
- HP-hour to kWh
- Indicated horsepower to kW
- Kelvin to Fahrenheit
- Calorific value, kcal/kg to BTU/lb
- Heat-transfer kcal SI equivalent
- CO₂ per kWh to per MJ
- Fuel flow, per hour to per day
- Density at 60 °F to API gravity
- Density, kg/m³ to lb/USgal
- Specific heat, SI to Imperial
- Molar enthalpy, SI to Imperial
- Knots to km per day
- Apparent power kVA to kW at PF 0.8
- kW to million BTU per hour
- Energy density, electrical to thermal per volume
- Density, lb/USgal to kg/m³
- League to nautical miles
- Flow, L/min to US gpm
- Flow, m³/h to barrels per day
- m³/h to CFM
- Million BTU per hour to kW
- Base Number to Na equivalent
- Mho to Siemens
- Kinematic viscosity units equivalence
- Million BTU to GJ
- Concentration, mol/m³ to ppm at STP
- Milliroentgen to millisievert
- Megawatt-hour to megajoule
- Surface tension, SI to CGS
- Resistivity units equivalent
- Dynamic viscosity, Pa·s to centipoise
- ppmv to mg/Nm³ for NOx (as NO₂)
- ppmv to mg/Nm³ conversion for SO₂
- Rankine to Kelvin
- Specific gravity to API (petroleum)
- Standard to Normal cubic metres per hour (gas)
- Saybolt Universal to Saybolt Furol seconds
- Tonne-nautical mile to tonne-km (transport work)
- Fuel flow, per day to per hour
- Flow, US gallons per minute to L/min
- Heat-transfer coefficient, SI to Imperial