Engineering Calculators
Industrial and mechanical engineering calculators: pumps, pipes, motors, compressors, water treatment, and more.
19 free tools availableAir Compressor Calculator
Calculate required air compressor shaft power and motor HP from FAD, i...
Use FreeBrick Calculator
Estimate bricks needed for a wall from area, brick rate, and waste all...
Use FreeCarbon Footprint Calculator
Estimate annual carbon footprint from driving, flights, home electrici...
Use FreeCement Calculator
Estimate cement bags for concrete volume using common mix ratios....
Use FreeChemical Dosing Calculator
Calculate chemical dosing rate in L/h and mL/min for water treatment. ...
Use FreeDecanter Centrifuge Calculator
Calculate decanter centrifuge G-factor, approximate sigma factor, and ...
Use FreeFlow Rate Calculator
Calculate the flow rate of liquids through pipes and channels. Convert...
Use FreeMotor Power Calculator
Calculate motor mechanical power, horsepower, and estimated current fr...
Use FreePaint Quantity Calculator
Estimate paint gallons from wall area, number of coats, paint coverage...
Use FreePipe Size Calculator
Calculate required pipe diameter for a given flow rate and velocity. R...
Use FreePipe Volume Calculator
Calculate the internal volume of a pipe based on its diameter and leng...
Use FreePump Flow Calculator
Calculate pump flow rate from pump power, head, efficiency, and fluid ...
Use FreePump Horsepower Calculator
Calculate pump horsepower and required shaft power from flow rate, tot...
Use FreeSludge Volume Calculator
Calculate raw and thickened sludge volume from wastewater treatment ba...
Use FreeTank Capacity Calculator
Calculate tank capacity for rectangular, cylindrical, or conical tanks...
Use FreeTank Volume Calculator
Calculate the storage capacity of various tank shapes including rectan...
Use FreeTile Calculator
Estimate tiles needed from surface area, tile size, and waste allowanc...
Use FreeWater Treatment Calculator
Calculate coagulant, chlorine, and chemical requirements for water tre...
Use FreeWind Chill / Heat Index Calculator
Calculate wind chill or heat index from temperature, wind speed, and h...
Use FreeAbout Engineering Calculators
Precision engineering calculators for water treatment professionals, mechanical engineers, and industrial designers — covering pumps, pipes, tanks, motors, and process engineering.
Our engineering suite covers fluid mechanics (pump flow, pipe sizing, flow rate), mechanical power (motor HP, compressor power), and water treatment process design (chemical dosing, sludge volume, treatment plant sizing). All calculators use standard engineering formulas and SI units.
The pump and pipe calculators use the fundamental fluid power equation P = ρgQH. The motor power calculator uses the rotational power formula P = 2πNT/60. Air compressor sizing uses isentropic compression theory for accurate power estimates.