Free Paver Quantity calculator with clear step-by-step results.
The repeating unit of a paved surface is the paver plus its joint, so a 200 × 100 mm block on a 3 mm joint occupies 203 × 103 mm and about 48 units fill a square metre. Cutting waste is higher than for brickwork because borders, radii and herringbone edges all need part units, and a cut paver rarely yields two usable pieces.
Pavers per square metre
Pavers/m² = 1 ÷ ((length + joint) × (width + joint))
Order quantity
Pavers to order = ceil(area × pavers/m² × (1 + waste))
This is a surface take-off only. Sub-base depth, bedding, edge restraint and drainage falls must follow the paving design and local standards, particularly for vehicle loading.
Joints add up. On a small 200 × 100 paver a 3 mm joint removes roughly 3% of the units per square metre, which is a meaningful number of pavers across a driveway.
5% for a straight stretcher bond, 8-10% for herringbone or basketweave, and up to 15% where there are curves, circles or many obstacles.
Yes — keep a small stock of spares from the same batch. Later production runs differ in colour, so a repair made years later will show.