Flooring Calculator UK | Laminate, Timber & Tile Area Calculator
Free UK flooring calculator. Work out how many packs of laminate, square metres of timber flooring or boxes of floor tiles you need. Includes waste allowance for cuts.
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Results are estimates only and may vary depending on site conditions, material specifications and waste. EasyEstimate and its affiliates accept no responsibility for any loss or damage arising from reliance on these figures. Always verify quantities with your supplier before ordering.
How to Calculate Flooring Quantities
Whether you’re laying laminate, engineered timber, vinyl planks or floor tiles, the starting point is always the same: room area plus waste allowance. This guide covers the maths for every common UK flooring type.
The Formula
- Room area = Length (m) × Width (m)
- Adjusted area = Room area × (1 + waste%)
- Packs needed = Adjusted area ÷ pack coverage (round up)
Waste Allowance Guide
| Layout | Waste % | When to Use |
|---|---|---|
| Straight lay, rectangular room | 10% | Most standard installations |
| Straight lay, alcoves/bay windows | 12% | Some extra cuts required |
| Diagonal lay (45°) | 15% | More cuts at walls |
| L-shaped or irregular room | 15% | Multiple cuts and offcuts |
| Herringbone pattern | 20% | Significant cutting at edges |
| Chevron pattern | 20% | Angled cuts at all borders |
Laminate Flooring
| Pack Coverage | Plank Size (typical) | Planks per Pack |
|---|---|---|
| 1.50 m² | 1200 × 190mm | 7 |
| 1.74 m² | 1380 × 193mm | 7 |
| 2.00 m² | 1285 × 192mm | 8 |
| 2.22 m² | 1380 × 193mm | 8 |
| 2.50 m² | 1380 × 193mm | 9 |
Worked example: 4m × 5m living room, straight lay:
- Room area = 4 × 5 = 20 m²
- Add 10% waste = 20 × 1.1 = 22 m²
- Packs (2.0 m² each) = 22 ÷ 2.0 = 11 packs
- Underlay = 22 m² → 2 rolls (15 m² rolls) or 1 roll (25 m² roll)
Engineered Wood Flooring
Engineered boards are wider and longer, so pack coverage is often higher:
| Plank Width | Typical Pack Coverage | Common Lengths |
|---|---|---|
| 150mm | 2.0–2.5 m² | 1200–1800mm |
| 190mm | 2.2–2.8 m² | 1200–2200mm |
| 220mm | 2.5–3.0 m² | 1800–2200mm |
| 260mm+ | 3.0+ m² | 2000–2400mm |
Floor Tiles
| Tile Size | Tiles per m² | Tiles per box (typical) | Box Coverage |
|---|---|---|---|
| 300 × 300mm | 11.1 | 11 | ~1.0 m² |
| 450 × 450mm | 4.9 | 10 | ~2.0 m² |
| 600 × 300mm | 5.6 | 6 | ~1.1 m² |
| 600 × 600mm | 2.8 | 3–4 | ~1.1–1.4 m² |
| 800 × 800mm | 1.6 | 2 | ~1.3 m² |
| 900 × 150mm (plank) | 7.4 | 8 | ~1.1 m² |
Don’t forget tile adhesive and grout:
| Product | Coverage |
|---|---|
| Tile adhesive (20kg bag) | 4–5 m² (floor tiles, 6mm bed) |
| Tile grout (5kg bag) | 5–8 m² (depends on tile size and joint width) |
| Self-levelling compound (25kg) | 4–6 m² at 3mm depth |
Vinyl / LVT Flooring
Luxury vinyl tile (LVT) and vinyl plank flooring follows the same area calculation:
| Format | Typical Pack Coverage |
|---|---|
| Click LVT planks | 2.0–2.5 m² |
| Glue-down LVT planks | 2.0–3.3 m² |
| Click LVT tiles | 1.5–2.0 m² |
Add 10% waste for click-fit LVT; 5% for glue-down (less waste from cuts).
Accessories Checklist
| Item | Quantity Rule |
|---|---|
| Underlay (laminate/engineered) | Same area as flooring + 5% overlap |
| Scotia/beading | Room perimeter in metres |
| Threshold strips | 1 per doorway |
| Expansion gap spacers | Reusable — 1 pack per job |
| D3 wood glue (click laminate) | Optional — 1 bottle per 20 m² |
| Primer (tile floors) | 1 litre per 5 m² |
From Flooring Quantities to a Full Estimate
This calculator gives you material quantities. A complete flooring estimate also includes:
- Subfloor preparation (levelling, DPM, insulation)
- Labour (typically £15–25/m² for laminate installation, £25–40/m² for tiling)
- Skirting board removal and refitting
- Door trimming (most doors need cutting after new flooring)
- Waste removal
EasyEstimate’s flooring calculators cover all of these elements with live UK pricing — from materials to labour to finishing.
Try the full flooring calculator free →
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Frequently Asked Questions
- How do I calculate how much flooring I need?
- Multiply the room length by the room width to get the area in square metres. Add 10% for waste (cuts, damaged boards, offcuts). For L-shaped rooms, split into rectangles and add them together.
- How many packs of laminate flooring do I need?
- Divide your total area (including waste) by the pack coverage. Most laminate packs cover 1.5–2.5 m². For example, a 15 m² room with 10% waste = 16.5 m². If each pack covers 2.0 m², you need 9 packs.
- How much underlay do I need for laminate flooring?
- You need the same area as your flooring plus 5% for overlaps. Underlay typically comes in rolls of 15 m² or 25 m². For a 15 m² room, one 15 m² roll plus a small amount from a second roll.
- What waste allowance should I use for flooring?
- Use 10% for rectangular rooms with straight-lay patterns. Use 15% for diagonal layouts, L-shaped rooms, or rooms with many alcoves. Use 20% for herringbone or chevron patterns.
- How many floor tiles per square metre?
- It depends on tile size: 300×300mm = 11 tiles per m², 450×450mm = 5 tiles per m², 600×600mm = 3 tiles per m². Always add 10–15% for cuts and breakage.
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