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 |

- Determine mass flow from volume flow and density
- Volumetric flow rate units converter
- Mass flow rate units converter
- Density units conversion

## User Guide

Use this calculator to convert mass flow rate and density of a substance to the rate of volumetric flow.

When a volume flow rate is calculated a chart will be generated showing related conversion values for mass versus volume flow for the specified substance density.

#### Formula

The formula used by this calculator to calculate the volume flow is:

Q = ṁ / ρ

###### Symbols

- Q = Volumetric flow rate
- ṁ = Mass flow rate
- ρ = Density

#### Mass Flow Rate Measured

Enter the rate at which a quantity of substance mass will flow in a unit of time.

#### Density

Enter the density of the substance that is flowing

#### Volumetric Flow Rate Calculation

This is the volume of substance which will pass in a unit of time for the selected mass flow rate and substance density.

## Help

### Calculating velocity from mass flow rate & density

*I have heat exchanger in/out mass flow rate readings for a liquid, and the densities for each liquid type. I also have the pipe diameter in inches. How do I calculate the velocity?*

First you need to use this ṁ / ρ = Q tool to calculate the volume flow rate by entering each mass flow rate and density value. Then you need to use this Q / (π · (ø / 2)²) = v tool to calculate the velocity by entering the previously calculated volume flow rate, and the diameter of the pipe.