The stair calculator is an online tool for calculating various parameters involved in the construction of stairs.
Carpet measuring calculator stairs.
Total rise the vertical height between the bottom of the first step and the top of the final step in the stair stringer.
To use our stair calculator you need to enter the following measurements as a minimum.
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.
How to measure stairs for carpet.
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.
As you can see entering the room and stair dimensions into our carpet calculator makes life much easier.
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.
Next measure upward across the tread and riser of 1 stair.
Width x run rise nose x number of stairs area.
A fraction to decimal conversion table for common fractions used in measurements is also provided at the bottom of the page.
Include an inch or two extra to wrap around the nose.
Measure the rise and run.
Height of the step.
Count all the stairs and enter these numbers into the stair calculator.
How to calculate stairs.
Total run the total horizontal length of the stair stringer.
Divide by 12 and round up to get the number of feet.
Multiply that by the number of stairs.
Refer to the figure adjacent to the calculator as a reference.