Flooring Calculator

Calculate flooring material needed and cost. Enter room dimensions and flooring type. Get total area, packs needed, and estimated cost. Informational only—consult a flooring installer.

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Published: October 23, 2025 | Updated: October 23, 2025 | Reviewed by: Construction/DIY Editor

Calculator Inputs

Select the shape of your room.
Choose your preferred units.
Room length.
Room width.
Select the type of flooring material.

Material Details

Coverage per pack.
Price for one pack.
Extra material for cutting and mistakes (5-15% typical).

Preset Rooms

Rounding Options

Export/Import

How it works

Total Area = Length × Width (for rectangular rooms). Number of Packs = (Area × (1 + Waste%)) / Pack Size. We calculate the total area, add a waste factor, and then determine how many packs you need to buy.

For rectangular rooms, we multiply length by width. For circular rooms, we use the formula Area = π × (Diameter / 2)². For L-shaped rooms, we break the space into two rectangles and add their areas.

Inputs explained

  • Room Shape: Select rectangular, L-shaped, or circular based on your room layout.
  • Dimensions: Enter the length and width for rectangular rooms, or diameter for circular rooms. Measure in meters or feet.
  • Units: Choose between meters (m) or feet (ft) for all measurements.
  • Flooring Type: Select the material you plan to install (hardwood, laminate, vinyl, tile, or carpet).
  • Pack Size: The area covered by one pack/box of flooring material (typically in m² or ft²).
  • Cost per Pack: The price for one pack of the flooring material.
  • Waste Factor: Extra material percentage to account for cutting waste, mistakes, and future repairs (5-15% is typical).

Example

Living Room: 5m × 4m = 20 m². Hardwood flooring, Pack Size = 2 m², Waste = 10%.

Total Area with Waste = 20 × 1.1 = 22 m²

Packs Needed = 22 / 2 = 11 packs

If each pack costs $50, Total Cost = 11 × $50 = $550

Tips & notes

  • Always buy extra material to account for cutting waste and mistakes.
  • Patterned floors (like herringbone or diagonal layouts) require more material—use a higher waste factor (15% or more).
  • Consider underlayment and installation costs in your budget.
  • Keep a few extra pieces for future repairs, as dye lots can vary between production batches.
  • For complex room shapes, break them into simpler shapes and calculate each area separately.
  • Check the manufacturer's recommendations for waste factors and installation requirements.

FAQs

Measure the room's length and width and multiply them to get the area. For rectangular rooms, Area = Length × Width. For L-shaped or irregular rooms, break them into rectangles and add the areas. Always add 5-15% waste factor for cutting and mistakes.

5-15% is common, depending on the room shape and flooring type. Simple rectangular rooms with straight-lay patterns need about 5-10%, while complex shapes or diagonal/herringbone patterns may require 10-15% or more.

Divide the total area (including waste factor) by the pack size and round up to the nearest whole number. For example, if you need 22 m² and each pack covers 2 m², you need 11 packs.

Yes, always buy extra material (5-15% more) to account for cutting waste, mistakes, and future repairs. It's also wise to keep a few extra pieces for replacements, as dye lots can vary between production batches.

Break the L-shape into two rectangles, calculate the area of each (Length × Width), and add them together. Alternatively, measure the entire outer dimensions and subtract the missing corner area.

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Disclaimer

Informational estimate based on standard calculations. Actual material needs may vary based on room shape, cutting waste, pattern matching, and installation method. Consult a flooring installer for accurate measurements and quotes.

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