Flooring Calculator

How to Calculate How Much Flooring You Need

Whether you're installing laminate, vinyl, or hardwood flooring, knowing exactly how much material to buy saves money and prevents project delays. For wet areas like bathrooms and kitchens, our tile calculator may be a better fit.

The Flooring Calculation Formula

Flooring needed = Room Area × (1 + Waste Factor)

Room area is simply: Length × Width. The waste factor accounts for cuts and fitting.

Step-by-Step Guide

1. Measure your room — Record length and width at the widest points.
2. Calculate area — Multiply length × width.
3. Add waste — Typically 10% for rectangular rooms.
4. Convert to boxes — Divide total area by the coverage per box.

Flooring Cost Comparison

Don't Forget These Materials

• Underlay — Required for laminate and most click-lock flooring (consider adding underfloor insulation at the same time for energy savings)
• Transition strips — For doorways and where flooring meets other surfaces
• Skirting boards — To cover the expansion gap around the perimeter
• Expansion gap spacers — Typically 8-10mm around all edges

Tips for Accurate Estimates

• Measure each section of irregular rooms separately
• Include closets and alcoves in your measurements
• Account for plank direction — lengthwise makes rooms appear larger
• Keep spare planks — Store 2-3 extra for future repairs

When to Hire a Professional

Consider professional installation for rooms with subfloor issues, complex layouts, stairs, or when transitioning between different floor types. Professional installers ensure proper acclimation and expansion gaps. If you are renovating the full room, our drywall calculator can help you estimate wall materials to complete the project.