Tile quantity calculator
Enter the measured area, rectangular tile dimensions and the area covered by a box. Choose an allowance to suit your layout.
Enter your measurements, then calculate.
Method and limitations
Order area = measured area × (1 + waste percentage ÷ 100). Tiles = order area ÷ (tile length × tile width); boxes = order area ÷ labelled box coverage. Both counts are rounded up separately. Arpa Ceramiche’s consumer advice suggests 10–15% extra on average; this is an indication, not a default or guarantee for your layout. Enter your own percentage. Joints and cut reuse are not modelled; box count is based on labelled coverage, not the rounded tile count. NIST Appendix C: 1 cm = 0.01 m, so tile dimensions in cm are divided by 100. Arpa Ceramiche: https://www.arpaceramiche.it/en/_files/ugd/9d9eed_3de3683d43164d0a88c370759d58f596.pdf NIST: https://www.nist.gov/system/files/documents/2023/01/30/appc-23-HB44.pdf
Sources
- Consumer information and advice — Arpa Ceramiche,
- Handbook 44 (2023), Appendix C — General Tables of Units of Measurement — NIST,