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## Related Tools

- Mass total and LxW to area density calculator
- Mass total and area density to total area calculator
- Area total and area density to total mass calculator
- Mass and area total to area density calculator
- Area density converter
- Mass conversion
- Length conversion
- Width conversion
- Area conversion

## User Guide

This calculator is used to determine the total mass of an item from the measured length and width with a specified area density. Along with the calculated total mass, a conversion scale showing a range of areas versus mass with a fixed area density, will also be drawn to relate to each calculated result.

### Formula

The formulas used by this calculator to determine mass from length, width and area density are:

A = L · W

m = A · ρ_{A}

#### Symbols

- L = Length
- W = Width
- A = Total area
- m = Total mass
- ρ
_{A}= Area density

### Length

Enter the length of the rectangular item to be calculated, and select the applicable measurement units.

### Width

Enter the width of the rectangular item to be calculated, and select the applicable measurement units.

### Total Area

This is the total area coverage calculated from the length and width above. Select the required area measurement units to display the result.

### Area Density

Enter the amount of mass per unit area of the item which has been measured, and select the appropriate units for mass and unit area.

### Total Mass

This is the total mass of the item measured, and the value is calculated once you have selected the required mass measurement unit.