How to Calculate Square Feet of a Room
Use this free Room Area Calculator to quickly calculate the square feet of any room. Enter your room measurements below in feet or inches, and get the area instantly. This calculator is perfect for flooring, AC installation, and general room planning.
Room Area Calculator
Step-by-Step Instructions
- Measure the length and width of your room in feet or inches (how to calculate square feet of a room in inches).
- Enter the values in the calculator above (how to calculate square feet of a room calculator).
- Click Calculate to get the area in square feet and square metres.
- Use the results for flooring, AC, or general planning (how to calculate square feet of a room for ac and how to calculate square feet of a room for flooring).
Room Area Calculation for Different Purposes
For Flooring Installation
When calculating square feet of a room for flooring, add 10% extra for waste and cutting.
For AC Unit Sizing
Proper AC sizing requires accurate room area calculation to ensure efficient cooling.
For Painting Projects
Calculate wall area separately from floor area for painting estimates.
Tips & Notes
- For irregular rooms, divide the room into rectangles, calculate each, and sum the areas.
- Always round up slightly if ordering materials to allow for waste.
- Use the metric option if measuring in metres — it converts automatically.
- Remember to measure twice for accuracy before final calculations.
FAQ
How do I convert metres to square feet?
Multiply metres by 3.28084 to convert to feet, then multiply length × width to get sq ft. The calculator can also do this automatically.
Can I use inches instead of feet?
Yes, convert inches to feet by dividing by 12 and then enter the values above (how to calculate square feet of a room in inches).
What if my room is not rectangular?
Split the room into rectangles or triangles, calculate each area, and add them together.
Disclaimer
This calculator provides approximate results. Always verify measurements before purchasing materials or making decisions based on the area.