Engineering Calculators
A curated suite of specialized online engineering calculators for mechanical, civil, and chemical engineers working with fluid systems. Perform essential calculations for pump sizing, pipeline design, system analysis, and more. These tools address key challenges in hydraulic engineering and fluid dynamics, including flow rate, velocity, pressure drop, and head conversions.
Flow Rate to Velocity Calculator
Instantly calculate flow rate, velocity, or pipe diameter for incompressible fluids. This essential tool for system design is based on the fundamental continuity equation, critical for HVAC and piping.
Total Time & Flow Rate to Total Volume Calculator
This calculator will calculate the volume of substance flowed over a set period of time at a specified volumetric flow rate.
Pipe Pressure Drop Calculator
Calculate frictional pressure loss in straight pipes or determine required pipe diameter based on system requirements. Uses the Darcy-Weisbach equation and Colebrook-White approximation for accurate results. Engineers can choose between two modes:
- Pressure Drop Mode – Enter pipe size, flow rate, fluid properties, and length to compute pressure loss.
- Pipe Diameter Mode – Enter flow rate, allowable pressure drop, pipe length, and fluid properties to find the optimum pipe size.
Fluids Density Calculator
Calculate the density of a wide range of petrochemicals, refrigerants, and common fluids using temperature and pressure. Supports more accurate results in pressure drop and flow rate calculations elsewhere in this suite.