# Tool to calculate Flow rate for Orifice,Venturi and Flow Nozzle

**URL:** <https://forumautomation.com/t/tool-to-calculate-flow-rate-for-orifice-venturi-and-flow-nozzle/1399>\
**Category:** Software and Tools\
**Created:** [September 26, 2016, 12:12am UTC](https://forumautomation.com/t/tool-to-calculate-flow-rate-for-orifice-venturi-and-flow-nozzle/1399 "2016-09-26T00:12:19Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![denizen](https://forumautomation.com/letter_avatar_proxy/v4/letter/d/848f3c/32.png) [@denizen](https://forumautomation.com/u/denizen)\
**Post date:** [September 26, 2016, 12:12am UTC](https://forumautomation.com/t/tool-to-calculate-flow-rate-for-orifice-venturi-and-flow-nozzle/1399/1 "2016-09-26T00:12:19Z")

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This tool is helpful to calculate Flow rate of Oriface,Venturi and Flow Nozzle type flow measurement instrument.

Two excel sheets are attached here. One is for “SI” unit calculation and other one is for US unit.

Following inputs need to be provided for Calculation flow rate.

Pipe Diameter,Constricted Diameter,Fluid density, Meter Coefficient

 ![Orifice Flow rate measurement](https://cdn.forumautomation.com/original/1X/fdeaf8130c25442fad04781f129ffcfb6a8e1b93.png)

[Flow Rate Calculation of Venturi\_Orifice and Flow Nozzle US units.xls](https://cdn.forumautomation.com/original/1X/5f94c526cddb1f8b2583d889e7b0a8d579d97740.xls) (96.5 KB) [Flow Rate Calculation of Venturi\_Orifice and Flow Nozzle SI units.xls](https://cdn.forumautomation.com/original/1X/c174ef6a85d56ee11a18f4c063dfd8076b78182c.xls) (96.5 KB)