Every conversion category, grouped by domain.
All 29 categories of deterministic unit conversions, organised by engineering domain — every page shows the factor, the formula and a worked example.
- Conversions
- 5,072
- Categories
- 29
- Units
- 471
Conversions by category
Process Conditions
3 categoriesState variables that define a process stream.
Flow & Transport
4 categoriesRates and speeds for fluids and bulk material movement.
Materials & Properties
6 categoriesPhysical properties of fluids, solids and mixtures.
Density and Mass
kg/m³, lb/ft³, SG, g/cm³, kg, lb, t, lb/gal (UK).
Viscosity
Pa·s, cP, mPa·s, poise, cSt, stokes.
Specific Properties
kJ/kg, BTU/lb, kWh/kg, m³/kg, ft³/lb.
Concentration
fraction, percent, ppm, ppb, ppt.
Surface Tension
N/m, mN/m, dyn/cm, mJ/m², lbf/ft, gf/cm.
Permeability
m², cm², mm², µm², ft², in², Darcy, kD, mD, µD, nD.
Mechanical & Dimensional
5 categoriesForces, motion and geometry for mechanical design.
Force and Torque
N, kN, lbf, kip, kgf, ozf, dyne, N·m, lbf·ft.
Acceleration
m/s², ft/s², g, cm/s² (Gal), in/s², mGal, kGal.
Length and Area
mm, inch, m, ft, km, mile, m², ft², acre.
Volume
m³, litre, US gal, ft³, oil barrel, ac·ft, fl oz (US/UK), hL.
Stress
Pa, kPa, MPa, GPa, psi, ksi, N/mm², kgf/cm², hPa, mmHg, dyn/cm².
Energy & Heat
5 categoriesPower, energy and heat-transfer engineering.
Power and Energy
kW, hp, MW, BTU/hr, kWh, MJ, joule, calorie.
Heat Transfer
W/(m·K), W/(m²·K), W/m², BTU/(hr·ft·°F).
Thermal Resistance
K/W, °C/W, mK/W, K/kW, µK/W, K/MW, °F·h/BTU, °F·s/BTU.
Thermal Capacity
J/K, kJ/K, mJ/K, MJ/K, BTU/°F, cal/K, kcal/K, Wh/K, kWh/K.
Specific Heat Capacity
J/(kg·K), kJ/(kg·K), cal/(g·°C), BTU/(lb·°F), kcal/(kg·°C).
Measurement & Instrumentation
6 categoriesElectrical, optical and radiological measurement quantities.
Electrical
V, A, Ω, F, H, C, A·h.
Photometry
lux, foot-candle, phot, cd/m², nit, foot-lambert.
Radiation Dose
gray, milligray, rad, millirad.
Frequency
Hz, kHz, MHz, GHz, rpm, rps, cycles/min, /s, /hr.
Radioactivity
Bq, kBq, MBq, GBq, Ci, mCi, µCi, nCi, pCi.
Digital Data Storage
bit, byte, kB, MB, GB, TB, PB, KiB, MiB, GiB, TiB, PiB.