After measuring the riser get the length and width of any landings then round all of your measurements up to the nearest foot.
Carpet measuring calculator stairs.
Height of the step.
As you can see entering the room and stair dimensions into our carpet calculator makes life much easier.
For a straight staircase.
To use our stair calculator you need to enter the following measurements as a minimum.
For a typical set of 12 box stairs measuring 3 wide using a carpet that is 12 wide you would require 12 x 4 6 in a 12 width of carpet you get 4 box stairs 12 divided by 3 so every 12 x 18 gives you 4 stairs.
Width x run rise nose x number of stairs area.
Next measure upward across the tread and riser of 1 stair.
A fraction to decimal conversion table for common fractions used in measurements is also provided at the bottom of the page.
To calculate how much carpet you ll need for your stairs start by measuring the width of 1 tread with a tape measure and add 2 inches to make sure you have enough carpet.
Total run the total horizontal length of the stair stringer.
Count all the stairs and enter these numbers into the stair calculator.
Divide by 12 and round up to get the number of feet.
How to calculate stairs.
Multiply that by the number of stairs.
If doing by hand multiply your stair area plus the padding by the number of stairs to determine how many square feet of carpet you ll need for all stairs.
Refer to the figure adjacent to the calculator as a reference.
Total rise the vertical height between the bottom of the first step and the top of the final step in the stair stringer.
The stair calculator is an online tool for calculating various parameters involved in the construction of stairs.
Include an inch or two extra to wrap around the nose.