CFM Calculator
Side A in Feet
Side B in Feet
Total SqFt
Ceiling Height in Feet
Total Volume in CuFt
Air Changes Per Volume
Minutes
CFM
Round Duct
Radius of Round Duct
Diameter
Area
Length
Volume
Square or Rectangular Duct
Side A in Inches
Side B in Inches
Area SqIn
Length
Volume CuIn
Air Velocity in Round or Rectangular Duct
Velocity Pressure in Inches W.G.
Flow Velocity in Feet Per Minute
Temperature Conversion (Celsius and Fahrenheit)
Fahrenheit to Celsius
Celsius
Celsius to Fahrenheit
Fahrenheit
Fahrenheit to Rankine
Fahrenheit
Rankine
Celsius to Kelvin
Celsius
Kelvin
Charles Law (Jacques Charles 1787)
Initial Temperature in Fahrenheit
Final Temperature in Fahrenheit
Initial Volume in CuFt
Initial Temperature Rankine
Final Temperature Rankine
Final Volume
Percent of Original Volume
PSIG to PSIA
PSIG
PSIA
PSIA to PSIG
PSIA
PSIG
Boyle's Law (1627-1691)
Initial Volume in CuFt
Initial Pressure PSIG
Final Pressure PSIG
Initial Pressure PSIA
Final Pressure PSIA
Final Volume in CuFt
Times Greater than Initial Vol
Electric Charge
Finding the Coulombs
Current
Time
Coulombs
Finding the Current
Coulombs
Time
Current
Ohms Law Solve for Resistance
E Voltage
I Amps or Current
R Resistance
Ohms Law Solve for Amperage or Current
E Voltage
R Resistance
I Amps or Current
Ohms Law Solve for Voltage
I Amps or Current
R Resistance
E Voltage
Ohms Law Solve for Power
E Voltage
I Amps or Current
P Power
Ohms Law Solve for Amperage or Current
P Power
E Voltage
I Amps or Current
Ohms Law Solve for Voltage
P Power
I Amps or Current
E Voltage
Ohms Law Solve for Power
I Amps or Current
R Resistance
P Power
Ohms Law Solve for Power Factor
E Voltage
I Amps or Current
PF Power Factor
P Watts (True Power)
S Volt Amps (Apparent Power)
Resistance
Motor Speed
Poles
Hertz or Frequency
Frequency (120 x Voltage)
Speed in RPMs
Motor Slip
Synchronous Speed in RPM
Rotor Speed
Percent of Slip
Capacitors in Series
MFD
MFD
MFD
MFD
MFD
MFD
MFD
MFD
MFD
MFD
MFD
Total Capacitance in MFD
Capacitors in Parallel
MFD
MFD
MFD
MFD
MFD
MFD
MFD
MFD
MFD
MFD
MFD
MFD
MFD
Total Capacitance in MFD