Square Footage / Flooring Cost Calculator
Add up every room in your project, pick a material, and get a total square footage, box count, and cost estimate in one pass instead of running the numbers room by room. Works in feet or meters.
Typical range: $1.00–$4.00 per sq ft. Adjust the price below if you have a specific quote.
Your flooring estimate will appear here
Add your rooms and material details, then click calculate to see your total square footage, boxes, and cost.
Quick Answer
Multiply each room's length by its width to get its area, then add all your rooms together. Add a waste allowance (10% is a safe default for straightforward layouts) to cover cuts and offcuts, then multiply the total by your price per square foot. If your flooring comes in boxes, divide by the box coverage and round up.
How It Works: Formula & Variables
Total Cost = ceil((Sum of Room Areas × (1 + Waste % ÷ 100)) ÷ Box Coverage) × Box Coverage × Price per Sq Ft
- Total Area
- The sum of every room's length times width.
- Area with Waste
- Total area multiplied by (1 + waste % ÷ 100), to cover cuts and offcuts.
- Boxes Needed
- Area with waste ÷ box coverage, rounded up to the next whole box, if box coverage is entered.
- Total Cost
- Material to buy (rounded to boxes if applicable) multiplied by price per square foot.
- Units
- Switch to metric to enter dimensions in meters; the calculator converts pricing and box coverage to a per-square-meter basis and still lists totals in square feet and square yards.
Worked Examples
Example 1: Single room, vinyl flooring
A 12 ft by 10 ft living room comes out to 120 sq ft. At $3 per sq ft with a 10% waste allowance, you'd need about 132 sq ft of vinyl, which puts the total cost around $396. No box coverage entered here, so the estimate is just based on raw square footage.
Example 2: Multi-room project, laminate flooring
Say your project covers a 12x10 living room (120 sq ft), an 11x9 bedroom (99 sq ft), and a 4x15 hallway (60 sq ft), for 279 sq ft total. Add 10% waste and you're at roughly 307 sq ft. At $4 per sq ft that's about $1,228, but if your laminate comes in boxes covering 20 sq ft each, you'd actually need 16 boxes (320 sq ft), which pushes the real cost closer to $1,280 once you round up to full boxes.
Key Concepts
Waste factor: Cutting flooring to fit around corners, doorways, and fixtures always leaves some material unusable. A 10% cushion covers most straightforward rooms; go higher for anything with a lot of angles or diagonal cuts.
Material price ranges are a starting point, not a quote: The preset price ranges in this calculator give you a rough per-square-foot figure to plan around before you've talked to a supplier or contractor. Real prices shift based on brand, region, and installation, so swap in an actual quote as soon as you have one.
Box rounding: Flooring is almost always sold by the box, not by the individual square foot. Rounding up to the next full box means you might end up with a little extra material left over, which is normal and usually better than coming up short mid-installation.
Why multi-room matters: Most flooring calculators handle one room at a time, which works fine for a single bathroom but falls apart the moment you're flooring an entire floor or a whole house. Combining every room into one total gives you a single number to shop with, and it can also help you hit bulk pricing thresholds that per-room math would miss.
Common Mistakes
Skipping the waste allowance: Ordering the exact square footage you measured, with nothing extra, often leaves you short once you start cutting around corners and fixtures.
Treating the preset price as a firm quote: The material price ranges are meant to help you ballpark a budget before you've gotten a real number from a supplier. Actual prices vary a lot by brand and region, so update the price field once you have a quote in hand.
Rounding down on boxes: Always round up to the next full box. Coming up one box short usually means a delayed project waiting on a reorder, and if your flooring is discontinued or from a different dye lot, the replacement might not even match.
Pricing rooms separately instead of combining them: If you're flooring several rooms, adding them all into one project total usually beats calculating and buying for each room on its own, since it can qualify you for bulk pricing and cuts down on wasted partial boxes.
Frequently Asked Questions
Measure the length and width of each room in feet, then multiply them together. A 12 ft by 10 ft room is 120 square feet. If your project covers more than one room, measure each one separately and add the areas together for your total.
Most flooring pros suggest 10% extra for square or rectangular rooms with simple layouts. Bump that up to 15-20% if the room has a lot of angles, diagonal cuts, or a herringbone pattern, since those layouts chew through more material as offcuts.
Add each room to your project, then let the total area (including waste) drive one combined cost. Buying material for the whole house at once, rather than pricing each room on its own, often gets you better per-unit pricing from suppliers and cuts down on leftover partial boxes.
Rough ranges: vinyl and LVP run $1 to $4 per sq ft, laminate $2 to $6, hardwood $3 to $7, and tile anywhere from $1 to $8 depending on the type. Carpet usually lands between $1 and $5. These are just starting points, actual pricing depends on your region, the specific product, and installation costs, so treat them as a baseline and swap in a real quote when you have one.
Take your total area with waste included and divide it by how many square feet one box covers, then round up to the next whole box. If you need 220 sq ft and each box covers 20 sq ft, that's 11 boxes exactly, but if you needed 225 sq ft you'd still round up to 12, since stores don't sell partial boxes.
Yes. Switch the units dropdown to metric and enter your room dimensions in meters. The material price field and box coverage field switch to a per-square-meter basis automatically, and every result also lists the total in square feet and square yards so you can compare against a quote given in a different unit.