Free 2026 carpet installation cost calculator. Enter your room size to get an instant estimate for carpet, padding, and pro labor. US pricing.
Frequently Asked Questions
How accurate is this carpet cost calculator?
The calculator uses 2026 US national-average pricing from Lowe's, Home Depot, and independent installers, with a 10% waste factor built in. Final quotes typically come within 10-15% of the estimate.
Does the estimate include padding and installation?
Yes. Every estimate includes carpet material, 6-8 lb residential padding ($0.30-$0.80/sq ft), and professional installation labor ($0.50-$2.00/sq ft).
How is square footage of carpet calculated?
Square footage = room length × width in feet, plus 10% for waste, seams and pattern matching. A 12x12 room needs about 158 sq ft of carpet ordered.
What is the cheapest type of carpet to install?
Builder-grade polyester carpet is the cheapest at $1.00-$2.50/sq ft material, with installed cost of $3.50-$5.00/sq ft including pad and labor.
How much should I tip carpet installers?
Tipping is not required but appreciated. $10-$20 per installer per day is standard for good work; $40-$50 each for a difficult full-house install.
Can I install carpet myself to save money?
DIY install saves $0.50-$2.00/sq ft in labor but requires a power stretcher, knee kicker, seaming iron and trim tools. Most DIYers save $300-$800 on a 12x12 room but risk visible seams and warranty voids.
Does carpet installation come with a warranty?
Yes. Lowe's offers a 1-year install warranty; Home Depot offers a lifetime install warranty on most LifeProof carpet. Independent installers typically warranty 1-2 years.