Floor Area + (Angle Bump-out)

The Floor Area of a Room with Angled Bump-out calculator computes the floor area of a rectangular room with an angled bump-out based on the length and width of the room and the front and back widths and depth of the bump-out.

INSTRUCTIONS:  Choose units and enter the following:

• (L) Length of Room
• (W) Width of Room
• (BW) Bump-out Opening Width
• (BN) Bump-out Back Width
• (BD) Bump-out Depth

Total Floor Area (A):  The calculator returns the total area in square feet.   However, this can be automatically converted compatible units via the pull-down menu.

The Math / Science

The formula for the area of a rectangular room with an angled bump-out is:

A = L ⋅ W + 0.5⋅BD⋅(BW+BN)

where:

• A = Floor Area of Room with Angled Bump-out
• L = Length of Main Room
• W = Width of Main Room
• BW = Width of Bump-out Opening
• BN = Width of Bump-out Back
• BD = Depth of Bump-out

Room Floor Area Calculators

• Area of Room's Floor - Area of Floor in Rectangular Room
• Area of Room's Floor with Angled Bump-out - Area of Floor in Rectangular Room with Angled Bump-out
• Area of Room's Floor with Squared Bump-out - Area of Floor in Rectangular Room with Squared Bump-out

Most rooms are  simple rectangles with a length and a width.  The only common departure are rooms with bump-outs.  Some bump-outs are angular and taper down from an opening.  Some bump-outs have squared corners.  To compute the square feet of these floors are simple geometry based on the measurements of the main floor and the bump-out dimensions.

To compute the area of a floor with a different shape (e.g., circular, oval, or polygon), see the Area Calculator.