# CFM from Differential Pressure Calculator

## CFM from Differential Pressure Calculator

Enter any 2 values to calculate the missing variable

How to calculate Cubic Feet per Minute (CFM) from differential pressure? Use our **CFM from Differential Pressure Calculator** that will helps you to do just that. You can enter the **Differential Pressure (W.C.)**, **Cross-sectional Area (ft²)**, and **CFM from Differential Pressure (ft³/min)** into the calculator to find the

### How to Use the Calculator

Using this calculator is simple. Enter any two values to calculate the third. Here’s how:

**Differential Pressure (W.C.)**: For example, enter`1.5`

inches of water column (W.C.).**Cross-sectional Area (ft²)**: For example, enter`2`

square feet (ft²).**CFM from Differential Pressure (ft³/min)**: The calculator will compute the CFM value.

To use the advanced calculator:

**Total System Pressure Drop (W.C.)**: Enter the pressure drop, e.g.,`1.5`

W.C.**Total Duct Area (ft²)**: Enter the duct area, e.g.,`2`

ft².**System Efficiency (%)**: Enter the efficiency, e.g.,`90%`

.**Adjusted CFM (ft³/min)**: The calculator will compute the adjusted CFM value.

### What Is CFM from Differential Pressure?

CFM from Differential Pressure is a measure of airflow derived from the pressure difference across a duct or system. This helps in understanding how much air is moving through the system.

### Formula

To calculate CFM from Differential Pressure, use this formula:

**Variables**

Variable | Description |
---|---|

CFM | Cubic Feet per Minute |

Differential Pressure | Measured in inches of water column (W.C.) |

Cross-sectional Area | Area in square feet (ft²) |

System Efficiency | Efficiency of the system (%) |

Adjusted CFM | Adjusted Cubic Feet per Minute |

### Calculation Examples

#### Example 1

**Differential Pressure (W.C.)**:`1.2`

W.C.**Cross-sectional Area (ft²)**:`3`

ft²

**Calculation Steps**:

**1. Apply the Formula**:

**2. Calculate the Square Root**:

**3. Multiply**:

**4. Result**:

#### Example 2

**Differential Pressure (W.C.)**:`2.5`

W.C.**Cross-sectional Area (ft²)**:`1.5`

ft²

**Calculation Steps**:

**1. Apply the Formula**:

**2. Calculate the Square Root**:

**3. Multiply**:

**4. Result**:

### Final Words

I hope you liked this tool and it helped you for converting pressure differences to airflow rates. Use the examples to guide you through the calculation process. Please lets us know your experience with the tool.