How to calculate house dimensions
When buying, renovating or designing a home, it is crucial to accurately calculate the dimensions of the house. Whether you're planning furniture placement, estimating finishing materials, or meeting building codes, knowing how to calculate dimensions can help you get twice the result with half the effort. This article will give you a detailed introduction to how to calculate house dimensions and provide structured data to help you master this skill easily.
1. Basic concepts of house size drawings

House dimensions drawings usually include floor plans, elevations, and sections. The floor plan is the most common, and it shows the horizontal layout of the house, including the length, width, area and other information of the rooms. An elevation shows the exterior dimensions of a house, while a section shows the vertical structure of the house.
2. How to calculate the size of the house
Calculating house size requires the following steps:
1.Measure the length and width of the room: Using a tape measure or laser distance finder, measure the length and width of the room from wall to wall. Make sure the tape measure remains level when measuring to avoid errors caused by tilting.
2.Calculate room area: Multiply the length of the room by the width to get the area of the room. For example, a room is 5 meters long and 4 meters wide, and its area is 20 square meters.
3.Record the location of doors and windows: In the dimensional drawing, the location and size of doors and windows also need to be marked. Measure the width and height of doors and windows and record their distance from the corners of the wall.
4.Draw dimensional drawings: Based on the measurement data, use drawing tools or software to draw dimensional drawings. Make sure to note all key dimensions, including wall thickness, door and window dimensions, etc.
3. Common room size reference
Here are some reference dimensions for common rooms for your reference:
| room type | Common length (meters) | Common width (meters) | Area (square meters) |
|---|---|---|---|
| master bedroom | 4-5 | 3-4 | 12-20 |
| Second bedroom | 3-4 | 3-3.5 | 9-14 |
| living room | 5-6 | 4-5 | 20-30 |
| kitchen | 3-4 | 2-3 | 6-12 |
| bathroom | 2-3 | 1.5-2 | 3-6 |
4. Things to note in the dimensional drawings
1.wall thickness: When calculating room dimensions, don’t ignore wall thickness. Usually, the thickness of interior walls is 10-15 cm, and that of exterior walls is 20-30 cm.
2.error control: Try to minimize the error when measuring, especially for irregularly shaped rooms. Multiple measurements can be taken and averaged.
3.Clearly labeled: When drawing dimension drawings, make sure all dimensions are clear and legible to avoid confusion.
5. Tool recommendation
1.measuring tools: Tape measure, laser range finder.
2.drawing tools: AutoCAD, SketchUp, Kujiale and other professional software, or simple pen and paper.
6. Summary
Accurate calculation of house dimensions is the basis of house design and decoration. In this article, you have learned how to measure a room, calculate the area, and draw a dimensional drawing. Hopefully this information will help you better plan your living space.
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