A 4 m × 5 m utility room
- 600 × 300 mm tiles with a 3 mm grout gap
- 10% allowance chosen by the user and 8 tiles in each pack
- 131 tiles after the allowance, rounded to 17 packs containing 136 tiles
Worked examples
Each one opens the planner with these measurements. Change one at a time to see what moves the estimate.