Pipe Flow Calculators
Your destination for fluid mechanics
Growing for more than 25 years
This website is offering pipe flow calculators for everyday problem-solving in the field of fluid dynamics. Sixteen desktop calculators, fourteen calculators as web applications, and three Android smartphone calculators are available.
More than 200,000 calculations per year
Used daily by thousands of students and professionals. Continuously improved and confirmed in practice.
Every reported bug is fixed within a day or two, for years.
Easy like a feather
Professional calculations made easy. Solve simple and complex fluid flow problems in less than one minute – GUARANTEED.
Short learning curve – just enter values and get results.
Calculators
21 calculators for everyday tasks. Desktop application (18 calc’s), online calculators (15 calc’s) or smartphone applications (3 calc’s). Online calculators are free with limited functionality. All calculators and functions are available with single payment.
Find your calculator...Flow rate in pipe for given pressure
Velocity through pipe
Pump performance curve for a specific pump speed and pipeline
Flow energy change from pressure to velocity
Laminar or turbulent flow? Calculate from viscosity and velocity
Calculate flow coefficient Cv from pressure drop and flow rate
Orifice plate calculation and sizing for natural gas, propane, etc.
Venturi tube sizing and flow calculation
Compressible airflow flow calculator
Natural gas pipe sizing
Calculate heat power from flow rate and temperature difference
Calculate the thickness of the pipe wall based on internal pressure and stress
Calculate flow in pipes as well as pressures in nodes in pipe network
Fluid mechanics theory
All the formulas used in the calculators are shown and explained. 4 Topics and 26 articles in the field of fluid mechanics with over 100 formulas.
Find your formula...Discover the role of fluid density in determining accurate flow and pressure measurements.
Understand how to compute the density of fluid mixtures for precise flow and pressure calculations
Gain insight into how fluid viscosity influences resistance and alters flow behavior
Determine flow type using the Reynolds number, which depends on fluid velocity and viscosity
Learn how the Bernoulli principle explains the relationship between energy, pressure, and velocity in flowing fluids
Utilize the Darcy-Weisbach equation to determine pressure loss due to friction within a pipe
Explore how vapor bubbles form and can cause damage in pumps and fluid systems
Understand the limits of high-velocity flow and how choked flow occurs in compressible fluids
Determine how to properly size gas regulators to match the specific flow demand of your application
Discover how gases respond and behave under different pressure and flow conditions
Understand the behavior of gases as pressure changes affect their flow characteristics
Learn the basic combustion principles for both liquid and gaseous fuels and how they impact fluid flow
Explore the process of water transforming into steam through evaporation under heat and pressure
Fluids properties
60 fluids - liquids, gases, fuels, flue gases.
The basic physical and chemical characteristics of the most commonly used fluids are presented.
Fluid properties are included in calculators.
Air properties: molar weight, density, specific heat, gas constant, viscosity
Common gases: molar weight, density, specific heat, gas constant, viscosity
Gas fuels: molar weight, density, specific heat, gas constant, viscosity
Flue gas properties: molar weight, density, specific heat, gas constant, viscosity
Water properties: density, specific heat, viscosity
Liquid properties: density, specific heat, viscosity
Liquid fuel properties: density, specific heat, viscosity
Steam properties: density, specific heat, viscosity
Pipe size and price
6 pipe standards, ANSI, API, PVC and EN.
Display of pipe characteristics according to the selected standard, diameter, schedule.
Pipe weight calculation with and without fluid. Possibility of fluid density input.
Pipe costing calculation for the entered unit price.
Welded and seamless wrought steel pipe
Specification for line pipe
Steel pipes grades, yield and tensile strength
Stainless sanitary tubes
Stainless steel pipe
Seamless and welded steel tubes
Poly-vinyl chloride (PVC) plastic pipes
Seamless cold drawn precision steel tubes