Industrial Engineering Tools
Industrial Unit Converter
Free unit conversion calculators for HVAC, pump, compressed air, and process engineers. Convert SCFM to ACFM, PSI to bar, GPM to m³/h, BTU/hr to kW, and 70+ more.
Gas Flow Conversions
View all (18) →ACFM to SCFM Calculator
ACFM (Actual Cubic Feet per Minute) is the volumetric flow measured at site conditions. SCFM...
CFM to kg/hr Air Flow Calculator
Mass flow rate (kg/hr) is calculated from volumetric flow (CFM) using the density of air at standard...
CFM to L/s Converter
1 CFM equals 0.471947 liters per second. This conversion is commonly used in laboratory ventilation...
CFM to LPM Converter
1 cubic foot equals 28.3168 liters. Since both units are per minute, the conversion factor is...
CFM to m³/h Converter
The conversion from cubic feet per minute (CFM) to cubic meters per hour (m³/h) derives from the...
Compressed Air Flow to HP Calculator
A widely used industrial rule of thumb is that 1 horsepower produces approximately 4 SCFM of...
ICFM to SCFM Converter
ICFM (Inlet Cubic Feet per Minute) refers to the gas volumetric flow measured at the compressor...
Nm³/h to SCFH Converter
Normal cubic meters per hour (Nm³/h) and Standard cubic feet per hour (SCFH) are both volumetric...
SCFH to SCFM Converter
SCFH (Standard Cubic Feet per Hour) and SCFM (Standard Cubic Feet per Minute) both measure gas flow...
SCFM to ACFM Converter
SCFM (Standard Cubic Feet per Minute) measures airflow normalized to standard reference conditions:...
SCFM to CFM Converter
SCFM (Standard Cubic Feet per Minute) is flow corrected to standard conditions. Actual CFM is the...
ACFM to ICFM Converter
ACFM (Actual Cubic Feet per Minute) and ICFM (Inlet Cubic Feet per Minute) both measure the same...
Air Consumption Calculator (SCFM)
This calculator determines the compressed air consumption of single-acting pneumatic cylinders. For...
Cylinder Air Consumption (SCFM) Calculator
Double-acting pneumatic cylinders consume air on both the extend and retract strokes, doubling the...
Leak Rate SCFM to CFM Converter
Leak rate measurements are typically reported in SCFM (standard conditions) for consistency. To...
NCFM to SCFM Converter
NCFM (Normal Cubic Feet per Minute) is referenced to 'Normal' conditions (typically 32°F, 14.696...
Orifice Flow to SCFM Calculator
This formula estimates the flow of compressed air through a sharp-edged orifice (or leak) based on...
Sm³/h to m³/h Converter
Sm³/h (Standard cubic meters per hour) and m³/h (actual cubic meters per hour) represent the same...
Liquid Flow & Pump Conversions
View all (18) →Bar to Meters of Head Converter
1 bar equals 10.197 meters of water column at 4°C (SG=1.0). The factor 10.197 comes from the...
Feet of Head to PSI Converter
Pressure at the bottom of a liquid column depends on the height of the column and the density of the...
GPM to L/s Converter
1 US gallon equals 3.785412 liters. Converting per-minute to per-second involves dividing by 60. So...
GPM to LPM Converter
1 US gallon equals 3.785412 liters. To convert from GPM to LPM, multiply by 3.785412. The US gallon...
GPM to m³/h Converter
One US gallon equals exactly 0.003785411784 cubic meters, a definition traceable to NIST and...
Imperial GPM to US GPM Converter
The Imperial (UK) gallon is 4.54609 liters, while the US gallon is 3.785412 liters. Therefore, 1...
LPM to GPM Converter
1 liter equals 0.264172 US gallons. The per-minute rates share the same time base, so the conversion...
m³/h to GPM Converter
1 cubic meter equals 264.172 US gallons. Converting the hourly rate to per-minute gives a factor of...
PSI to Feet of Head Converter
Pump performance curves are almost universally presented in feet (or meters) of head rather than...
Pump Head Calculator
Pump head, formally known as Total Dynamic Head (TDH), quantifies the net mechanical energy imparted...
Head Loss to PSI Converter
Head loss in a piping system represents the energy lost to friction as fluid flows through pipes,...
NPSH Calculator
Net Positive Suction Head Available (NPSHa) is the absolute pressure head at the pump suction, minus...
NPSHa Calculator
NPSHa (Net Positive Suction Head Available) quantifies how much pressure margin exists above the...
Pump Affinity Law Calculator
The pump affinity laws describe how centrifugal pump performance changes when impeller speed...
Pump Efficiency Calculator
Pump hydraulic efficiency (η) is the ratio of useful hydraulic power delivered to the fluid —...
Specific Speed Pump Calculator
Specific speed (N_s) is a dimensionless index that characterizes the geometry and performance of a...
Suction Head to PSI Converter
Suction head is the height of liquid column available at the pump inlet. Converting suction head to...
Water Horsepower Calculator
Water horsepower (WHP) is the theoretical hydraulic power transferred from the pump to the fluid. It...
Pressure & Vacuum Conversions
View all (15) →Bar to Atmospheres Converter
Bar and standard atmosphere (atm) are nearly equivalent units — the difference is only 1.3%. 1 bar =...
Bar to PSI Converter
The bar is a metric pressure unit defined as exactly 100,000 pascals (100 kPa or 0.1 MPa). It is not...
Inches of Mercury to PSI Converter
1 inch of mercury (inHg) equals 0.49115 psi. Mercury manometers were historically the standard for...
Inches of Water to PSI Converter
One inch of water column (inH₂O, also written as in.w.c. or in.wg) at 4°C equals exactly 0.0361263...
kPa to PSI Converter
1 kPa equals 0.145038 psi. This is the inverse of the PSI to kPa conversion. The kilopascal is the...
MPa to PSI Converter
1 MPa (megapascal) equals 145.038 psi. MPa is the SI unit for high pressure applications such as...
PSI to Bar Converter
1 pound per square inch (psi) equals 0.0689476 bar. Bar is the metric unit commonly used in Europe...
PSI to kPa Converter
1 PSI equals 6.89476 kPa. The kilopascal (kPa) is the preferred SI-derived unit for pressure...
PSI to MPa Converter
Megapascals (MPa) are the SI unit for pressure in engineering applications, commonly used for...
PSIA to PSIG Converter
PSIA (pounds per square inch absolute) measures pressure relative to a perfect vacuum (0 psia). PSIG...
PSIG to PSIA Converter
PSIG (pounds per square inch gauge) measures pressure relative to local atmospheric pressure. A...
inHg Vacuum to atm Converter
Standard atmospheric pressure at sea level supports a mercury column 29.92 inches high. This...
kg/cm² to PSI Converter
Kilogram-force per square centimeter (kgf/cm² or kg/cm²) is a traditional metric pressure unit,...
mmHg to PSI Converter
Millimeters of mercury (mmHg) is a traditional pressure unit based on the height of a mercury...
Torr to mbar Converter
The torr is a traditional vacuum pressure unit named after Evangelista Torricelli. One torr is...
HVAC & Ventilation Conversions
View all (15) →BTU/hr to kW Converter
1 BTU per hour equals 0.000293071 kW. A British Thermal Unit (BTU) is defined as the amount of heat...
BTU/hr to Watts Converter
BTU per hour is the traditional US unit for heating and cooling capacity. One BTU is the energy...
CFM per Ton Converter
The standard rule of thumb in HVAC design is that 400 CFM of airflow provides approximately 1 ton...
FPM to m/s Converter
1 foot per minute equals 0.00508 meters per second. Since 1 foot = 0.3048 m and 1 minute = 60...
kW to BTU/hr Converter
1 kW equals 3412.14 BTU per hour. This is the inverse of the BTU/hr to kW conversion. Kilowatts are...
m/s to FPM Converter
Meters per second (m/s) is the SI unit for velocity, while feet per minute (FPM) is the standard US...
Refrigeration Tons to kW Converter
One refrigeration ton (RT) equals 3.51685 kW. This unit traces its origin to the 19th-century ice...
Sensible Heat Calculator
Sensible heat is the heat that causes a temperature change without a phase change. The equation Q_s...
ACH to CFM Calculator
Air Changes per Hour (ACH) is a dilution ventilation metric that expresses how many times the entire...
Air Changes Per Hour (ACH) Calculator
Air Changes Per Hour (ACH) measures how many times the entire volume of air in a room is replaced...
Duct Velocity to CFM Calculator
The fundamental relationship between air velocity and volumetric flow: CFM = Velocity × Area. If air...
HVAC Load Calculator (Tons)
Total HVAC cooling load combines sensible heat (temperature change) and latent heat (moisture...
Latent Heat Calculator
Latent heat is the energy associated with moisture addition or removal from air — it changes...
Static Pressure to CFM Calculator
This formula converts a static pressure differential across a known opening or flow resistance into...
Wet Bulb to Relative Humidity Calculator
This simple approximation estimates relative humidity from dry bulb and wet bulb temperatures using...