#### Description

This is a highly practical and reliable calculator which can be simply used for calculating the pipe size for provided volumetric or mass flow rate and stream velocity. Alternatively, you can also use it for calculating velocity for known pipe size and rate of flow. In addition, it is also possible for the user to calculate both, mass or volumetric flow rate and convert between them.

#### Available calculations

- pipe diameter
- flow velocity

In Selection section you can select values to input. Not selected values will be calculated. You select between:

- calculation type - pipe diameter of flow velocity
- volume and mass flow rate
- flowing fluid - gas or liquid
- density or temperature for gases

In Report section you have instant calculation report for input values. From there you can copy/paste report to your text editor.

#### Key features

- Continuity equation based
- Suitable for both, liquids and gases
- Capability to convert between volumetric and mass flow rate
- Calculation of actual volumetric flow rate for particular pressure and temperature

#### Calculator values

- q - volumetric flow rate
- Fluid flow rate in terms of units of volume per unit of time
- ṁ - mass flow rate
- Fluid flow rate in terms of units of mass per unit of time
- D - pipe diameter
- Internal circular pipe diameter
- V - velocity
- Flow velocity in terms of units of distance per unit of time
- A - area
- Internal pipe cross section area
- ρ - fluid density
- Mass per unit of volume
- T - temperature
- Fluid temperature for gas density calculation based on the ideal gas state equation
- p - pressure
- Fluid pressure at the start of the pipe for gas density calculation based on the ideal gas state equation
- R - gas constant
- Gas constant in terms of energy per unit of mass and temperature, for gas density calculation using ideal gas state equation