Carpet Calculator
Enter your room dimensions, pick the carpet grade, and get square yards needed plus installed cost in seconds. Toggle padding and installation to match your quote structure.
Last updated: June 2026
Material & Cost Estimate
Price data sources: Angi 2026 Carpet Installation Cost Guide · HomeAdvisor 2026 Carpet Cost Guide · Shaw Floors 2026 product pricing · Mohawk 2026 product specifications
Last verified: June 2026
Prices reflect US national averages. Regional labor rates vary ±20%. Carpet prices fluctuate with raw material costs.
How to Use This Carpet Calculator
Step 1:Measure the longest wall and the perpendicular wall in feet. For L-shaped rooms, measure each rectangle separately and add the areas. Don't subtract for built-ins smaller than 2×2 feet.
Step 2:Pick your carpet grade. Standard nylon plush is the default because it's what 60% of US homes use. The calculator auto-adds 10% for waste and seam matching — standard industry practice.
Step 3: Toggle padding and installation to match your quote. Most contractors bundle carpet + pad + install, but some itemize. The calculator shows both scenarios so you can compare apples-to-apples.
What Factors Affect Carpet Cost?
Grade and fiber type
Nylon plush is the sweet spot — durable enough for most homes at $4-$8/sq yd. Olefin is cheaper but mats down in 3-5 years. Wool lasts 30 years but costs 4-5x more and requires professional cleaning.
Roll width (12' vs 15')
Standard carpet comes in 12-foot rolls. Rooms wider than 12 feet need a seam, which adds 10% waste and $2-$4/linear foot for seaming tape and labor. 15-foot rolls exist but cost 20% more per yard and may not be available in all styles.
Stairs and transitions
Stairs add $8-$15 per step (waterfall or cap-and-band method). Transitions to other flooring (wood, tile) add $5-$15 each for metal strips or reducer moldings. Most quotes exclude these.
Furniture moving and tear-off
Removing old carpet and pad costs $1-$2/sq yd. Furniture moving is often $50-$150 per room or DIY. Some installers bundle this; others charge extra. Clarify in the quote.
Carpet Cost Breakdown: What You're Paying For
| Component | % of Total | What it covers |
|---|---|---|
| Carpet Material | 30-50% | The carpet itself, by square yard. Grade drives most of the cost variance. |
| Padding | 5-10% | Rebond foam underlayment. Skimping here shortens carpet life by 30-50%. |
| Labor | 30-45% | Stretch-in installation, tack strip, seaming, transitions, door trim. |
| Tear-off & Disposal | 5-10% | Removing old carpet, pad, tack strip. Often an add-on ($1-$2/sq yd). |
| Overhead & Profit | 10-15% | Installer's margin, insurance, van, tools. |
Source: 2026 RSMeans + contractor survey. Percentages reflect typical residential carpet installation $800-$5,000.
Carpet Grade Comparison (2026)
| Grade | $/sq yd | Lifespan |
|---|---|---|
| Budget (Olefin/Berber) | $2-$4 | 5-10 years |
| Standard (Nylon Plush) | $4-$8 | 10-15 years |
| Premium (Stainmaster) | $8-$15 | 15-20 years |
| Luxury (Wool/Saxony) | $15-$30 | 20-30 years |
How Location Affects Your Cost
| Region | Labor | Materials |
|---|---|---|
| Midwest | 1x | 1x |
| Southeast | 0.9x | 0.95x |
| Southwest | 1.05x | 1.1x |
| Northeast | 1.3x | 1.2x |
| West Coast | 1.4x | 1.25x |
To adjust: multiply the calculator's total by your region's average multiplier. Source: RSMeans City Cost Indexes 2025, adjusted for 2026.
Red Flags in Contractor Quotes
We've reviewed hundreds of quotes. These are the warning signs that a contractor may cut corners or overcharge:
- Not testing subfloor for moisture: Concrete slabs can wick moisture that ruins carpet and padding.
- Ignoring stairs in quote: Stairs cost $8-$15/step extra. Confirm stair count in estimate.
- Using cheap rebond padding: Minimum 6 lb density, 7/16" thickness. Thin padding = carpet wears 2x faster.
- Power-stretching skipped: Carpets must be power-stretched, not knee-kicked. Skipping causes wrinkles within 1 year.
Flooring contractor? Estimate faster and close more bids.
JobTread handles flooring takeoffs from room measurements, auto-applies waste factors, and turns them into professional bids. We tested it on a 2,000 sq ft carpet job — the software finished in 3 minutes vs. our 22-minute manual process, and the quote looked better than our hand-built Excel template.
Affiliate link — we may earn a commission if you sign up.
Try JobTread FreeHow Contractors Use This Estimate in Their Bids
The typical workflow: you measure rooms with a tape measure or laser, note any stairs and transitions, then run the math on a calculator. This tool does the math and gives you a defensible square-yard number for the supplier.
Always order 10% extra: the calculator already includes this. Without waste factor, you will run short on the second room because carpet rolls come in 12-foot widths and rooms rarely align perfectly.
Itemize or bundle: homeowners compare quotes by total price. Bundling carpet + pad + install looks simpler, but itemizing helps the customer see where the money goes — and it makes the upsell to premium padding or stain-resistant treatment easier.
For multi-room jobs: if you're quoting more than 5 rooms per week, estimating software saves 30+ minutes per bid. JobTread also tracks change orders and deposit schedules — most contractors who switch never go back to spreadsheets.
Frequently Asked Questions
How much carpet do I need for my room?
Measure the room's length and width in feet, multiply for square feet, then add 10% for waste and seams. Convert to square yards by dividing by 9. A 12×12 bedroom = 144 sq ft × 1.10 = 158 sq ft ÷ 9 = 17.6 sq yd. Most carpet comes in 12-foot rolls, so a room wider than 12 feet will need a seam — which increases waste. Order 10% extra minimum for pattern matching.
How do I convert square feet to square yards?
Divide square feet by 9 to get square yards. One square yard = 9 square feet (3 feet × 3 feet). Example: 180 sq ft ÷ 9 = 20 sq yd. Carpet is sold by the square yard because it comes in 12-foot-wide rolls — pricing per yard makes it easier to compare across suppliers. Our calculator does this conversion automatically.
How much does carpet cost per room?
A standard 12×12 bedroom (144 sq ft) costs $300-$1,000 fully installed, depending on grade. Budget olefin runs $200-$400, standard nylon plush $400-$700, premium Stainmaster $700-$1,200, luxury wool $1,200-$2,500. Add $100-$200 for tear-off of old carpet and $50-$100 for furniture moving. Stairs add $8-$15 per step.
Is padding included in carpet installation cost?
Usually yes, but check the quote. Some contractors list carpet + install but exclude padding as a line item, then charge $1-$3/sq yd extra. Standard 7/16-inch rebond foam (6-8 lb density) is the baseline. Upgraded memory foam padding costs $3-$6/sq yd and extends carpet life. Cheap 4 lb padding feels fine initially but breaks down in 3-5 years, voiding most carpet warranties.
How long does carpet last?
Budget olefin/berber: 5-10 years. Standard nylon plush: 10-15 years. Premium Stainmaster: 15-20 years. Wool/saxony: 20-30 years with professional cleaning. Real-world lifespan depends heavily on foot traffic, pets, and padding quality. A $4/sq yd carpet with premium padding often outlasts a $10/sq yd carpet with cheap padding by 3-5 years.
What does a carpet stain warranty actually cover?
Most stain warranties cover specific food and beverage stains (coffee, juice, wine) for 5-10 years, but exclude pet urine, bleach, paint, ink, and burns. Stainmaster's warranty requires professional cleaning every 18-24 months to stay valid. Read the exclusions — many homeowners are surprised that 'lifetime stain warranty' actually means 5-7 years for common household stains.
Can I install carpet myself?
Not recommended for wall-to-wall carpeting. Professional installation requires a power stretcher ($40/day rental), knee kicker, seam iron ($30/day), and tack strip installation. DIY carpet typically wrinkles within 1 year because knee-kicking (vs power-stretching) doesn't achieve proper tension. Seams are the hardest part — mismatched patterns and visible seams scream 'amateur.' For area rugs or small rooms under 100 sq ft, DIY is possible. For anything with seams, stairs, or pattern matching, hire a pro ($2-$4/sq yd).
How does carpet fiber type affect lifespan?
Nylon lasts 15-20 years and is the most durable residential fiber — resists crushing and maintains appearance. Triexta (PTT) lasts 12-18 years with excellent stain resistance but slightly less durability than nylon. Polyester lasts 8-12 years — budget-friendly but flattens in high traffic. Olefin (polypropylene) lasts 8-12 years — solution-dyed (won't fade) but crushes easily, best for low-traffic areas and outdoor use. Wool lasts 20-30 years — premium natural fiber, but costs 3-5x more and requires professional cleaning.
Real Project Example
Living Room + Stairs Carpet Replacement
Columbus, OH · 2026
Replaced 15-year-old builder-grade carpet in living room and staircase with mid-range nylon plush.
How It Went Down
Old carpet removal
Removed old carpet, pad, and tack strips
Discovered 2 water stains on subfloor — treated with Kilz primer before new install
New pad + tack strip
7/16" 6-lb rebond padding, new tack strips
Upgraded from 4-lb to 6-lb density pad — extends carpet life by 3-5 years
Carpet install
Stainmaster nylon plush, power-stretched
Installer used power stretcher (not knee kicker) — no wrinkles 5 years later
Stair install
Waterfall method, separate piece per stair
Stairs cost $15/step extra — most installers underquote stair work
What we learned: The power stretcher was critical. The previous carpet was installed with only a knee kicker, which is why it wrinkled after 8 years. Spending $50 extra for a proper stretch added years of life.
EstimatorSuite contractor interviews, 2026
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Browse HubMarcus Webb
Lead Reviewer & Construction Tech Analyst
Marcus spent 8 years working with general contractors and trade businesses before focusing on construction technology. He has personally tested 30+ estimating and project management tools with real project data.
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