Find another flow measurement calculator by clicking on the required answer which coincides with the input parameters you already know.

vol flow | mass flow | flow speed | vol | mass | time | |
---|---|---|---|---|---|---|

area |
flow speed | vol flow | ||||

dia |
flow speed | vol flow | ||||

w x h |
flow speed | vol flow | ||||

time |
vol | mass | vol flow | mass flow | ||

vol |
time | density | vol flow | |||

mass |
time | density | mass flow | |||

density |
mass flow | vol flow | mass | vol | ||

flow speed |
area, dia |

- Calculate flow velocity from a given volume flow rate and area
- Determine volume flow from area and speed of flow
- Calculate cross-sectional area of circular pipe or duct
- Calculate cross-sectional area of rectangular shaped duct
- Area units converter
- Convert volume and time to flow rate
- Volumetric flow rate units converter
- Volumetric units converter

## User Guide

This tool will calculate the cross-sectional area that a substance is flowing through from the rate of volume flow and the speed of the flow. A range of conversion values for flow and area will also be displayed for each set of input parameters entered.

### Formula

The formula used by this calculator to calculate the cross-sectional flow area is:

A = Q / v

#### Symbols

- A = Cross-sectional area
- Q = Volumetric flow rate
- v = Flow velocity

n.b. This formula assumes uniform flow conditions within the entire cross-sectional area, without any friction losses near to surfaces.

### Volumetric Flow Rate Required

Enter the quantity of volume which will flow through per unit of time.

### Flow Velocity Measured

Enter the speed that the substance is moving through the flow area.

### Cross-Sectional Area Calculation

This is the cross-sectional area that would be needed for a substance moving at the specified speed and rate of volumetric flow.