Floor Area Calculator
Floor area is the surface space of a room or slab, measured in square meters (m²). It is calculated by multiplying length by width. Accurate floor area estimates are essential for flooring, tiling, and paint calculations.
What Is Floor Area?
Floor area is the surface space of a room, slab, or floor covering, measured in square meters. It is calculated by multiplying the length and width of the space. Floor area is the starting point for estimating tiles, paint, flooring material, and rugs.
Example
Formula: Length x Width = 6 m x 4 m = 24 m²
Enter length and width in any unit, then choose a result unit (m²).
Tip: Choose your result unit on the right before calculating.
Step-by-step calculation
- Enter length and width with units.
- Select the result unit you want (m²).
- Calculate to see floor area and steps in the selected unit.
How this is calculated
Floor area = length times width, summed across rooms and with fixed openings subtracted where relevant. Results are given in m² with unit conversion.
Sources: IS 1200 (Method of Measurement of Building Works).
FAQ
- How do I calculate floor area by hand?
- Multiply length x width. Example: 6 m x 4 m = 24 m².
- What is the formula for floor area?
- Area = Length x Width. Both must be in the same unit.
- Floor area vs room area
- Floor area is length x width. Room area may include nooks or subtract permanent fixtures.
- What units should I use?
- Use meters for dimensions to get m². Convert cm by dividing by 100.
- Can I use this for an irregular room?
- Split the room into rectangles, calculate each area, then add them together.