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.

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.

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.

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 diameterVelocity through pipe

Pump head and flowPump performance curve for a specific pump speed and pipeline

Bernoulli principleFlow energy change from pressure to velocity

Reynolds numberLaminar or turbulent flow? Calculate from viscosity and velocity

Control valveCalculate flow coefficient Cv from pressure drop and flow rate

Orifice plate

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

Venturi tubeVenturi tube sizing and flow calculation

Air flowCompressible airflow flow calculator

Natural gasNatural gas pipe sizing

Heat powerCalculate heat power from flow rate and temperature difference

Pipe wall thicknessCalculate 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

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 PIPESPipe 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 FLOWcompressible 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.

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 5LSPECIFICATION FOR LINE PIPE

API 5L AND ISO 3183STEEL PIPES GRADES, YIELD AND TENSILE STRENGTH

ASTM A 270STAINLESS SANITARY TUBES

ASME/ANSI B36.19 M

STAINLESS STEEL PIPE

EN 10220SEAMLESS AND WELDED STEEL TUBES

ASTM D1785POLY-VINYL CHLORIDE (PVC) PLASTIC PIPES

EN10305-1SEAMLESS COLD DRAWN PRECISION STEEL TUBES