CFM → Velocity (HVAC) CFM → Velocity (HVAC) Compute air velocity from airflow and duct size. Includes unit converters. Formula: V = Q / A. Airflow value Flow unit CFM (ft³/min)L/sm³/hm³/s Duct shape RoundRectangular Size unit inch (in)foot (ft)millimeter (mm)centimeter (cm)meter (m) Diameter Width Height Output velocity unit fpm (ft/min)ft/sm/s Decimals Calculate Reset Result Quantity […]
tCFD-Pre (Web) Open STL Clear Selection Export Geometries Click selects a connected flat face patch Save current patch Save Patch Base (remaining) mesh name Saved patches
Density Unit Converter Density Unit Converter Convert between kg/m³, g/cm³, g/mL, kg/L, g/L, mg/m³, kg/dm³, t/m³, lb/ft³, lb/in³, slug/ft³, lb/gal (US), and lb/gal (UK). Base: kg/m³. Value From kilogram per cubic meter (kg/m³)gram per cubic centimeter (g/cm³)gram per milliliter (g/mL)kilogram per liter (kg/L)gram per liter (g/L)milligram per cubic meter (mg/m³)kilogram per cubic decimeter (kg/dm³)tonne per […]
Diffusivity (Mass / Thermal) Converter Diffusivity Converter Choose a basis (Mass diffusivity D or Thermal diffusivity α) and convert between common units. Base: m²/s. Basis (both share units of area/time) Mass diffusivity (D) Thermal diffusivity (α) Value From m²/scm²/smm²/sm²/hcm²/minmm²/minft²/sft²/hin²/sin²/h To m²/scm²/smm²/sm²/hcm²/minmm²/minft²/sft²/hin²/sin²/h Decimals Convert Reset Converted Value Unit Symbol Value Constants: 1 ft = 0.3048 m, […]
Thermal Conductivity Unit Converter Thermal Conductivity Unit Converter Convert between W/(m·K), W/(m·°C), kW/(m·K), W/(cm·K), W/(mm·K), Btu/(h·ft·°F), Btu/(h·in·°F), kcal/(h·m·°C), and cal/(s·cm·°C). Base: W/(m·K). Value From W/(m·K)W/(m·°C)kW/(m·K)W/(cm·K)W/(mm·K)Btu/(h·ft·°F)Btu/(h·in·°F)kcal/(h·m·°C)cal/(s·cm·°C) To W/(m·K)W/(m·°C)kW/(m·K)W/(cm·K)W/(mm·K)Btu/(h·ft·°F)Btu/(h·in·°F)kcal/(h·m·°C)cal/(s·cm·°C) Decimals Convert Reset Converted Value Unit Symbol Value Constants used: 1 Btu = 1055.05585262 J; 1 h = 3600 s; 1 ft = 0.3048 m; 1 in = […]
Electrical Conductivity Unit Converter Electrical Conductivity Unit Converter Convert between S/m, mS/m, µS/m, S/cm, mS/cm, µS/cm, and S/mm. Base: S/m. Value From siemens per meter (S/m)millisiemens per meter (mS/m)microsiemens per meter (µS/m)siemens per centimeter (S/cm)millisiemens per centimeter (mS/cm)microsiemens per centimeter (µS/cm)siemens per millimeter (S/mm) To siemens per meter (S/m)millisiemens per meter (mS/m)microsiemens per meter (µS/m)siemens […]
Conductance Unit Converter Conductance Unit Converter Convert between S, mS, µS, nS, pS, kS, MS, and GS. Base: siemens (S). Value From siemens (S)millisiemens (mS)microsiemens (µS)nanosiemens (nS)picosiemens (pS)kilosiemens (kS)megasiemens (MS)gigasiemens (GS) To siemens (S)millisiemens (mS)microsiemens (µS)nanosiemens (nS)picosiemens (pS)kilosiemens (kS)megasiemens (MS)gigasiemens (GS) Decimals Convert Reset Converted Value Unit Symbol Value siemens (S) = mho (℧) = […]
Concentration (Mass / Mole / Volume Fraction) Converter Concentration Converter Choose a basis (Mass, Mole, or Volume fraction) and convert between fraction (0–1), %, ‰, ppm, ppb, and ppt. Basis (dimensionless fraction) Mass fraction (w) Mole fraction (x) Volume fraction (φ) Value From Fraction (0–1)Percent (%)Permille (‰)ppmppbppt To Fraction (0–1)Percent (%)Permille (‰)ppmppbppt Decimals Clamp to […]
Compressibility Unit Converter Compressibility Unit Converter Convert between Pa⁻¹, kPa⁻¹, MPa⁻¹, GPa⁻¹, bar⁻¹, atm⁻¹, psi⁻¹, and m²/N (≡ Pa⁻¹). Base: Pa⁻¹. Value From per pascal (Pa⁻¹)per kilopascal (kPa⁻¹)per megapascal (MPa⁻¹)per gigapascal (GPa⁻¹)per bar (bar⁻¹)per atmosphere (atm⁻¹)per psi (psi⁻¹)square meter per newton (m²/N) To per pascal (Pa⁻¹)per kilopascal (kPa⁻¹)per megapascal (MPa⁻¹)per gigapascal (GPa⁻¹)per bar (bar⁻¹)per atmosphere […]
Capacitance Unit Converter Capacitance Unit Converter Convert between F, mF, µF, nF, pF, kF, and GF. Base: Farad (F). Value From farad (F)millifarad (mF)microfarad (µF)nanofarad (nF)picofarad (pF)kilofarad (kF)gigafarad (GF) To farad (F)millifarad (mF)microfarad (µF)nanofarad (nF)picofarad (pF)kilofarad (kF)gigafarad (GF) Decimals Convert Reset Converted Value Unit Symbol Value Notes: 1 F = 10³ mF = 10⁶ µF […]