Carpet Calculator — Measure, Estimate, and Save Cost Instantly
Professional-grade carpet measurement tool trusted by homeowners and contractors
Step 1: Room Dimensions
Step 2: Carpet Options
Step 3: Results
1. Room Dimensions
Room 1
Quick Select Standard Rooms:
2. Carpet Options
5% (Simple)
10% (Standard)
15% (Complex)
Your Carpet Estimate
Room Layout Preview
Visual representation will appear here
Enter room dimensions to see your estimate
Material Usage
10% Waste
Usable
Waste
Flooring Type Comparison
| Type | Avg. Cost | Lifespan |
|---|---|---|
| Carpet | $3-8/sq ft | 5-15 years |
| Hardwood | $8-15/sq ft | 25+ years |
| Vinyl | $2-7/sq ft | 10-20 years |
How to Measure a Room for Carpet
Step-by-Step Guide
1. Measure Length and Width
Measure the longest points of the room in feet. For irregular rooms, break into rectangles.
2. Calculate Area
Multiply length × width to get square footage. Our calculator does this automatically.
3. Add Waste Factor
Add 10% for standard rooms, 15% for complex layouts with angles and closets.
Carpet Calculation Formula
Room Area:
Length × Width
Total Area:
Room Area × (1 + Waste %)
Material Cost:
Total Area × Price/sq ft
Total Cost:
Material + Padding + Installation
Standard Carpet Roll Sizes
| Roll Width | Common Uses | Waste Factor |
|---|---|---|
| 12 feet | Standard residential rooms | 5-10% |
| 13.6 feet | Commercial, wider rooms | 8-12% |
| 15 feet | Large open spaces | 10-15% |
Frequently Asked Questions
How much waste should I add?
For simple rectangular rooms, 5-10% waste is sufficient. For rooms with closets, angles, or multiple corners, use 10-15%.
Should I buy extra carpet?
Yes! Always purchase extra for future repairs. Most manufacturers recommend keeping 5-10% of the original material.
What’s the difference between sq ft and sq yards?
1 square yard = 9 square feet. Carpet is typically sold by the square yard, while installation costs are often quoted per square foot.