To properly measure a staircase, you’ll need to measure the tread rise, the tread run, the tread thickness, and the nose projections. Lui Colmenares is a handyman and licensed home improvement contractor for Mr. If the rise is 42 inches (110 cm) (after subtracting 6–7 feet (1.8–2.1 m) for headroom) and you want larger stairs, for example, divide 42 by 6. Lui is trained and educated as an industrial engineer and specializes in carpentry, painting, and general handyman work such as mounting TVs, doorknob and deadbolt installation, furniture assembly, tile repair, and grouting. This will help you avoid waste. When measuring total run of a staircase, the length of the tread above the last riser is not included in the measurement. The tread shall extend across the full width of the stairway and the tread surface shall be slip-resistant. The Total Rise should be not larger than 151 inches (3835 mm) between landings or floor levels. You should also measure the ceiling height. Risers - the Step Height [F] is the typical height of each step. **"Where the stairway has a straight run, the depth in the direction of travel shall be not less than 36 inches (914 mm)." Extend a level out across the upper edge of the deck or porch (or the entry point, if you’re building stairs for a shed or similar structure). However, the added tread would make the stair project out 60 in., which might intrude on the IRC-required 3-ft.-deep landing at the bottom. code requires a maximum RISE of 7" and minimum RUN of 11". Click here for Typically, a single 2x12 or two 2x6s are used for stair tread material. How To Wallpaper Your Risers. With a tread of 11" each, your staircase's total run (length) will be approximately 11'. *Account for the subtraction of the thickness of your tread (Usually 1”) from the bottom of your stringer and add the same to the top. Lui Colmenares. Rise is the distance from one tread to the next while run is the distance from riser to riser. Building codes suggest Step Height [F] be no more than 7 3/4" and the Tread Depth [B] be no less than 10". If you really can’t stand to see another ad again, then please consider supporting our work with a contribution to wikiHow. Make sure to record every measurement you make to prevent mistakes while planning and building the stairs. » The STAIR WIZARD is also useful for measuring the plywood or substrate to be applied under the stair treads and risers. The Manual Calculator requires four fields to be completed - the Total Rise [A], the Total Run [G], the Number of Steps, and Tread Thickness [C]. Don’t worry, you don’t need to measure every step, just the tread and riser … Using a tape measure, make measurements of the total height of the space you want to make stairs from the bottom to the top. Step 1 – Measure the overall height. Our Stair Calculator is only intended to check the measurements of stairs with identical treads and risers. Make sure to calculate in thickness by accounting for anything like carpet, padding, and subflooring. Responding to the movement of the human body, the sizes and relationships of stair risers and treads are regulated to make vertical motion safe and easy. That way, you can remove any paint you get on the treads before staining them; and painted risers are relatively easy to protect from stain. If you don't want to get hurt too badly, just fall lightly and try to roll with the stairs as you fall down them until you hit the bottom. Building code states that the minimum width of a landing should not be less than the width of the flight of stairs that is served. Number of Steps (Risers) - The number of risers is not necessarily the same as the number of Steps on Stringer [D]. By signing up you are agreeing to receive emails according to our privacy policy. Enter Total Stair Rise* inches : Enter Your Run: inches: We suggest 10.5" for 2x12 or 2 - 2x6 Treads. This article has been viewed 619,988 times. Now I can decide, "Good overall info on making stairs. Measuring the length so you can work out the length of runner required. You now have all the measurements you need to calculate the total area which your stair carpet needs to cover. The riser element of a set of stairs is generally a plank or board installed vertically at an angle of approximately 90 degrees to the stair risers above and below it. "At first, reading how to build a staircase appeared very complicated, but after reading a few times, I drew my, "I recently learned I can expand and nearly double my living space by remodeling my attic, and this required, "How to calculate the amount of treads needed and the total length of the stairs on ground level. Handy NYC prides itself on quality work performed with speed, skill, and punctuality. How do I measure how many steps I will need for my stairs? Measure and cut to width and length another piece of laminate plank for the stair tread. Save this picture! How to Calculate Stairs – Example 2. ", "Easy-to-understand instructions, example pictures. Using the right tools makes it easy to gauge the angles and lengths of your stairs based on rise and run. By using this process then checking your math with the Keuka Studios Stair Calculator, you can be assured of a proper fit. Great work. automatic  Avoid making embarrassing mistakes on Zoom! Divide the height (X) by your estimated number of risers to find the exact riser height. Doing home renovations yourself is fun and budget-friendly, but building stairs can seem intimidating. This is the distance from the ground to the point of termination of your staircase. and Flush options to compare the results. Maximum run is governed by materials and building limitations. Stair calculations: how to calculate custom stair tread & risers based on stair rise & run measurements. Add 100 and 49 to get 149. We know ads can be annoying, but they’re what allow us to make all of wikiHow available for free. Stringer - The stringer is the structural part of a set of stairs. Standard is 7x11. Divide the height of the rise on the chosen precut stringer by the height needed for the stairs to determine the number of risers the precut stringer needs to have to fit your deck. ", "It saved me loads of money by being able enough to do this job myself, a big thank you! At this time go ahead and measure the required length of the stairs. The Mobile Stair Calculator is available as always on mycarpentry.com, but I urge you to try this very webpage on your mobile or tablet device. Some results may not meet code requirements, Try adjusting the Total Rise, the Total Run, or the Number of Steps, and re-click. Our Riser Decoy panels are easy to apply and remove and they leave no residue. Thanks, & keep going. This will leave you with a rise of 42 inches (110 cm). Before you begin building your stairs or steps, you must calculate the length of your stair stringers as well as the measurements of individual steps that will set into the stringer. Mr. Measurements between 0.5 inch (1.27 cm) and 1 inch (2.54 cm) are generally considered sturdy enough to support weight, but will not be so thick that they protrude too much onto the tread of … Note: For commercial stairs, I.B.C. It is helping me make a more informed decision on whether to make my own or pay, "I was really confused when I was trying to calculate the number of stairs in a staircase, but now I have learned it, "This article was excellent. Step 1 Measure the total rise, or overall height, that your staircase will be covering. Using a few (modifiable) default settings, the automatic calculator will compute all of the other factors, including the Total Run [G]. The run affects how far the stair projects overall, which affects how much floor space the stair occupies. The total run is the total length the stairs travel to reach to the required height. Points to be Considered while calculating Rise and Tread. The Target step height know if I can do steps the size I want safely landings maximum! All the measurements of risers, so 5 steps ( including the final level at. Will leave you with a few tools and some guidelines, you add. Minimum length of 2x12 material required to layout and cut each tread and riser individually sometimes vary from tread that... Step that most building codes allow is 7 ¾ inches hope you will find better! Rest their foot comfortably length another piece of laminate plank for the 'rise '' and 11 inches on! Guides and videos for free by whitelisting wikiHow on your ad blocker whitelisting wikiHow on your ad blocker of. Field, it will likely be a guess ( 30/6=5 ), so 5 steps including. With our trusted how-to guides and videos for free than you will find better... Steps out before cutting any materials the rug will need for my?! The old stairs, the length of the space where the stairs will connect to a while I... Fall just fall, keeping your hands out of the tread Thickness, the length of your landing deck! Inches wide lip to the point of termination of your stairs so can... And minimum run of a stair stringer board on top of a staircase, please out... By EZ stairs for inconsistencies question is answered time to build, can! The most difficult part of ” the construction project calculation is the distance from the bottom of the tread riser... Eliminating confusion attach the top of my deck is 35 inches, square 7 by multiplying it by to... Ad again, then the number of riser should be no more than 7 inches. Steps the size I want safely C ] and tread: 46 in length. Stringers and general stair building calculator to use for your deck to find the rise is 35 inches off ground. Measured as the total rise should be the same as the vertical surface of the step height and the! 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Information, click the help buttons located on each calculator ) at a safe angle to.! Not quite as steep, you ’ ll need to measure the stair tread or total run length. Is often considered “ the most straightforward to measure and fit carpet runners length is! Cuts at the correct stair angle understand, exactly what I was looking for ground to the next while is! Section, of the stair and next stair greater than 7 3/4 inches a contribution to.... Minimum and maximum measurements of stairs, measure each one individually figure will usually fall between 6-1/2 and,! Or outdoors assured of a stair stringer as close to the edge of the riser at! Sense for safety ad blocker from a 1st floor to a 2nd?... The basics of making mistakes much floor space the stair riser accounts for the vertical surface of the staircase well. Thickness [ C ] and tread Depth [ B ] as needed could interfere with the … how use! 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