How Many 30×30cm Tiles for 20m²?

Last updated: 2026-06-23

How Many 30×30cm Tiles for 20m²?. Calculate exactly how many 30×30cm ceramic tiles you need to cover 20m², including adhesive, grout and 10% wastage. Enter your values in the form and get instant results, including a full materials breakdown and an adjustable wastage allowance. Quick answer: you need approximately 245 tiles (222 net + 10% wastage)
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Written and reviewed by the CalcToWork editorial team. Last updated: 2026-06-23.

calcto.work — Calculated on 2026-06-23