Pipe Flow Calculators

Growing for more than 20 years

This website is offering pipe flow calculators for everyday problem-solving in the field of fluid dynamics. Sixteen desktop calculators, fourteen calculators as the web application, three calculators for Android smartphones are available at the moment.

More than 200.000 calculations per year

Used every day by thousands of students and professionals. Improved many times 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.

Pipe flow calculators

20 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 for subscribed users.

Pressure drop

Flow rate in pipe for given pressure

Pipe diameter

Velocity through pipe

Pump head and flow

Pump performance curve for a specific pump speed and pipeline

Bernoulli principle

Flow energy change from pressure to velocity

Reynolds number

Laminar or turbulent flow? Calculate from viscosity and velocity

Control valve

Calculate flow coefficient Cv from pressure drop and flow rate

Orifice plate

Orifice plate calculation and sizing for natural gas, propane,...

Venturi tube

Venturi tube sizing and flow calculation

Air flow

Compressible airflow flow calculator

Natural gas

Natural gas pipe sizing

Heat power

Calculate heat power from flow rate and temperature difference

Pipe wall thickness

Calculate the thickness of the pipe wall based on the known value of the internal pressure and the permitted specified minimum yield stress in the pipe