Our flooring calculator tells you how many square metres of flooring you need for a room, including a waste allowance for cuts and offcuts. Enter the room dimensions and choose a waste percentage (typically 5–10% for straight-lay flooring, 10–15% for diagonal patterns). The calculator also shows you how many packs of flooring you need based on the pack coverage. This works for laminate, engineered wood, hardwood, vinyl, and tile. Always buy slightly more than you calculate to account for future repairs and to ensure you have matching material from the same batch.