House Area Calculator - Calculate Total Area of Your Home

Last updated: 11 Jun 2025 | Author: Brij | Review By: Irshad

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Easily calculate the total area of your home. Enter room dimensions, add multiple rooms, and get the total square footage instantly.

Measurement Unit:

Room Name:

Length:

Width:

Buttons

House Area Calculation Results

Total Area:

sq ft

Total Area:

sq m

Room	Dimensions	Area

House Area Information:
• Standard ceiling height is 8-9 feet (2.4-2.7 meters)
• Add 10-15% extra for wall thickness in total calculations
• For irregular shaped rooms, divide into rectangles
• Total area excludes non-livable spaces (attics, garages)

The House Area Calculator helps you quickly determine the total area of your home by adding the dimensions of each room. Whether you're planning construction, renovation, flooring, or just estimating usable space, knowing your house area is essential.

With this tool, you can enter the length and width of each room individually. The calculator sums up the area of all the rooms and provides the total house area.

Formula to Calculate Room Area

To calculate the area of each room:

$\text{Room Area} = \text{Length} \times \text{Width}$

You can calculate the area of multiple rooms and sum them up for the total house area.

Formula to Calculate Total House Area

If there are n rooms, the formula becomes:

$\text{Total House Area} = \sum_{i=1}^{n} \left( \text{Length}_i \times \text{Width}_i \right)$

Example Calculation

Let’s say you have the following rooms:

Room 1: Length = 15 ft, Width = 12 ft
Room 2: Length = 10 ft, Width = 10 ft
Room 3: Length = 20 ft, Width = 15 ft

Step-by-step:

Room 1 Area = 15 × 12 = 180 sq ft
Room 2 Area = 10 × 10 = 100 sq ft
Room 3 Area = 20 × 15 = 300 sq ft

Total Area:

$\text{Total Area} = 180 + 100 + 300 = 580 \text{ sq ft}$

Why Use a House Area Calculator?

Plan for flooring, painting, heating, or cooling
Estimate construction or renovation costs
Understand your property's usable area
Easy and error-free calculations

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House Area Calculator - Calculate Total Area of Your Home

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