To calculate how much square foot or meters you'll need for vinyl floor installation, you'll need to know the total area.
For Squares and Rectangles
For square and rectangle areas, the formula would be:
length * width = area
So if a rectangle's length is 15 and its width is 10:
15 * 10 = 150 square feet / meters needed
Usually, you want to add the "waste factor," which accounts for any damages or extra cuts you'll need. The standard waste number is 10%.
With waste, the final formula will now be:
area * (1 + waste number) = square feet / meters needed
Using the area (150) calculated above, this would be:
150 * (1 + 0.1)
OR
150 * 1.1 = 165 square feet / meters needed
For Triangles
To calculate triangles, the formula will be:
1/2 (base) * height = area
So if the base is 12 and the height is 9, then we'll get:
1/2 (12) * 9 = area
OR
6 * 9 = 54 square feet / meters
With the waste factor, the final formula is the same as with squares and rectangles:
area * (1 + waste number) = square feet / meters needed
So using the triangle's area (54) above and a waste of 10%, we get:
54 * (1 + 0.1) = square feet / meters needed
OR
54 * 1.1 = 59.4 square feet / meters needed
For rooms with both Triangle and Square/Rectangle shaped rooms
For rooms that have a both a triangle and square/rectangle shape, you'll have to calculate each area separately. Use the square/rectangle and triangle area formulas (with waste included) above.