Active

To use calculator you should enable java script in your browser.

Action

Calculation setup

Flow rates and velocity

Pressures

Coefficients

If you need a quick calculation, but you are not still familiar how to use the calculator, you can order calculation service from the calculator developer.

Read more about calculator application and check if calculator is suitable for your problem.

Also, read about calculation procedures, what you have to know for the calculations and what limitations apply.

Subscribed users have access to the full service which includes:

- One click switch from metric to imperial units
- Export results in word or excel format
- Preview, copy and paste results from a web page to your text editor
- Send results to you email

Read all about available deployments. In any way of utilizing calculator, Internet connection is required, for authentication at least.

- 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
- V - velocity
- Flow velocity in terms of units of distance per unit of time
- D - internal diameter
- Internal circular pipe diameter
- Cv - flow coefficient
- In imperial units - gpm
- Kv - flow coefficient
- In metric units - m
^{3}/h - p - pressure
- Fluid pressure at the start of the pipe for gas density calculation based on the ideal gas state equation
- ρ - fluid density
- Mass per unit of volume

- Select value to calculate. You should enter not selected one.
- q/ṁ
- Calculate flow rate
- Δp
- Calculate pressure drop
- Cv/Kv
- Calculate flow coefficient

- Select value to input. You should enter selected one. The other one will be calculated
- q
- volumetric flow rate
- ṁ
- mass flow rate

- Select value to input. You should enter selected one. The other one will be calculated.
- Cv
- flow coefficient in imperial units - gpm
- Kv
- flow coefficient in metric units - m
^{3}/h

- Select value to input. You should enter selected one. The other one will be calculated.
- v
- flow velocity
- D
- internal pipe diameter