# 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.

Desktop application (16 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 for a specific 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

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

FLUID PROPERTIES

Fluid density, specific volume, specific gravity, mixture density, viscosity, pressure levels

FLOW IN PIPES

Pipe diameter, laminar/turbulent, Reynolds number, Bernoulli principle, Darcy formula, friction, dynamic/total pressure, heat power

FLOW IN VALVES AND FITTINGS

Resistance coefficient, flow coefficient, cavitation, choked flow, flow discharge, gas regulator capacity, natural gas control valve

COMPRESSIBLE GAS FLOW

compressible flow, isothermal flow, fuel combustion, maximum flow, steam evaporation

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 Gases Gas fuels Flue gas

Molar weight, density, specific heat, gas constant, viscosity

Water Liquids Liquid fuels Steam

Density, specific heat, viscosity

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

ASME/ANSI B36.10

WELDED AND SEAMLESS WROUGHT STEEL PIPE

API 5L

SPECIFICATION FOR LINE PIPE

API 5L AND ISO 3183

STEEL PIPES GRADES, YIELD AND TENSILE STRENGTH

ASTM A 270

STAINLESS SANITARY TUBES

ASME/ANSI B36.19 M

STAINLESS STEEL PIPE

EN 10220

SEAMLESS AND WELDED STEEL TUBES

ASTM D1785

POLY-VINYL CHLORIDE (PVC) PLASTIC PIPES

EN10305-1

SEAMLESS COLD DRAWN PRECISION STEEL TUBES