Carpet Installation Cost Calculator

All-in (material + padding + labor), expect $3 to $7 per square foot for mid-grade carpet. Budget carpet with basic padding and standard labor can be as low as about $2.85/sq ft, while luxury wool with premium padding and complex installation can exceed $13/sq ft. For a typical 12×12 bedroom, that's roughly $850 to $1,500 installed. The fiber/grade is the biggest variable, with padding and labor (driven by room complexity) layered on top, plus stairs and old-carpet removal. Enter your area, carpet quality, padding, complexity, and stairs in the calculator to anchor the estimate.

Nylon is the gold standard for durability and stain resistance in high-traffic areas like hallways, stairs, and living rooms — resilient, long-lasting, and the industry workhorse. Triexta (such as SmartStrand) is nearly as durable with superior moisture and stain resistance, great for pets. Polyester (PET) is budget-friendly and vibrant in color but compresses and shows wear faster under heavy foot traffic, so it's better for bedrooms and low-traffic rooms. Wool is the premium, naturally resilient and luxurious option, but it costs 3–5× more and needs more careful maintenance. Match the fiber to the room: nylon or triexta where it's busy, polyester to save in quiet rooms, wool for a high-end space. The calculator's quality tiers reflect this.

Padding is the unsung hero of a carpet job — it cushions your step, but more importantly it absorbs impact so the carpet backing doesn't break down, which directly determines how long the carpet lasts. Cheap or missing padding lets carpet wear out years early. For most residential rooms, 7/16-inch, 6-lb-density rebond foam is the industry standard, balancing comfort and durability. Thicker isn't always better: too-thick padding (over 1/2 inch) makes carpet feel spongy and can actually shorten its life by over-flexing the backing — and many manufacturers void warranties if you exceed their padding spec. For stairs, use a thinner, denser pad (around 1/4 inch, 8-lb). The calculator prices basic, standard (recommended), and premium padding; don't pair good carpet with bargain pad.

DIY can save about $1–$2 per square foot in labor, but it's harder than it looks and easy to get wrong. Proper installation requires renting a power stretcher ($40–$80/day) — not just a knee kicker — plus a carpet cutter and a seaming iron, and the skill to stretch the carpet tight and place seams where they won't show or wear. Improper stretching causes ripples and buckling within a year or two, and bad seams fray or peak. For a single small, simple room with no seams, a confident DIYer can manage it; for rooms over ~200 sq ft, any space needing seams, or stairs, professional installation is strongly recommended — and many carpet warranties require professional installation to stay valid. The calculator estimates professional installation.

Usually not by default — most installers charge separately for old-carpet removal, typically $0.30–$0.60 per square foot, so always confirm it's in the quote. Some big-box retailers bundle removal into their installation package but tack on a disposal fee of $25–$75. Removal includes tearing out the old carpet and pad, pulling staples, and hauling it away, and it's also the moment to inspect the subfloor for damage, squeaks, or moisture before the new carpet goes down. The calculator offers old-carpet removal as a per-square-foot add-on so you can include it. If you remove the old carpet yourself to save, bag it for disposal and leave the tack strips in place if they're in good condition.

Stairs are priced per step, not per square foot, because of the extra cutting, fitting, and tacking labor — expect about $10–$25 per step, or roughly $130–$325 for a standard 13-step staircase. The install style matters: 'waterfall' (draping the carpet over the nose of each step) is faster and cheaper, while 'Hollywood' or cap-and-band (wrapping each step's tread and riser tightly) looks more upscale, uses more material, and costs more. Landings, winders (pie-shaped turning steps), and open-sided staircases add cost too. The calculator includes one- and two-flight stair options (about $195 and $390) so you can add them to the room estimate. Always use a thin, dense pad on stairs for safety and durability.

It depends on the fiber and care. Budget polyester carpet lasts about 5–10 years before it mats and shows traffic lanes. Mid-grade nylon lasts 10–15 years, and premium nylon or wool can last 20–25 years with good care. What shortens carpet life: skimping on padding, infrequent vacuuming (embedded grit cuts the fibers), heavy pet traffic, and moisture exposure. What extends it: quality padding, regular vacuuming, prompt spill cleanup, professional cleaning every 12–18 months, and entrance mats. Choosing a more durable fiber and good padding costs more up front but often costs less per year over the carpet's life — worth weighing against how long you'll stay in the home.

It's not recommended. Layering new carpet over old adds excessive height that creates tripping hazards and binding at door transitions, and the soft, unstable lower layer lets the new carpet shift, ripple, and wear out prematurely — you also can't properly stretch and tack the new carpet to the subfloor. Beyond performance, you'd be trapping years of dirt, allergens, and any moisture or odor in the old carpet underneath. The right approach is always to remove the existing carpet and pad, inspect and repair the subfloor (fix squeaks, secure loose boards, address any moisture), and install fresh padding before the new carpet. The small savings from skipping removal isn't worth the shortened lifespan and safety issues.

It's relatively quick. A standard bedroom (150–200 sq ft) takes about 2–3 hours for a professional two-person crew, and a full home (~1,500 sq ft) typically takes one full day. Add roughly 1–2 hours for old-carpet removal and disposal, and about an hour per staircase. More complex layouts — many rooms, closets, angles, and seams — take longer, as does moving furniture (clear what you can beforehand to save time and any moving fee). The carpet is usable right away once installed (no drying time like a cleaning), though you may notice some new-carpet odor (VOC off-gassing) that fades in a few days with ventilation. The calculator estimates cost; your installer can give a schedule based on the area, complexity, and stairs.

The best deals tend to land in January–February (the post-holiday slow season) and August–September (the pre-fall remodel push), when retailers discount to move inventory. Holiday sales events — Memorial Day, Labor Day, and Black Friday — at major retailers can offer 20–40% off material. Labor pricing is less seasonal, but some local installers offer off-season discounts in slower winter months. To get the best overall value, get multiple quotes, compare the all-in price per square foot (not just material), watch for free-padding or free-installation promotions (and read what they include), and don't let a sale push you into a lower-grade carpet than the room needs. The calculator helps you compare grades so a 'deal' is actually a deal.