Calculate how many paving stones you need for a path, patio or outdoor area, based on area, stone size and waste.
The calculator adds waste to the area, then divides by the area of one stone:
A straight path with simple cuts needs less waste than a path with curves or many corners.
Yes, most paving stones should be laid on a compacted gravel or crushed-stone base of at least 5–10 cm to prevent settling and ensure good drainage.
A 1–2 cm joint is common. If the joints are wide, it can be worth increasing the area somewhat beyond the stones' own dimensions, since the joint sand also takes up space.