Paver Patio Calculator — m to pavers, sand, gravel, cost
How to use this calculator
Enter patio area in meters or centimeters (rectangle, circle, L-shape, or custom area). Choose paver size and laying pattern. Get pavers, gravel, sand, edge restraint, and polymeric sand quantities.
Base layers — 10-15 cm compacted gravel, 2.5 cm sand bedding per DIN 18318.
Patterns — running bond, herringbone (+10%), basket weave, stack bond.
Edge restraint — concrete or plastic edging along the perimeter.
Saved Calculations
| Time | Shape | Area m² | Pavers | Gravel | Sand | Cost |
|---|
How to Use This Paver Patio Calculator (Metric)
Choose a shape (rectangle, circle, L-shape, or a known m²), set the paver size and pattern, then pick the gravel base and bedding sand depths. You get pavers, compacted aggregate base, bedding grit, perimeter edge restraint, and polymeric jointing sand. Order full pallets and full tonnes — quarries rarely split loads. Price bulk base and grit with the gravel & aggregate calculator, and size the excavation for base + bedding + paver depth with the excavation volume calculator.
Formulas
Pavers = area ÷ paver face area × (1 + waste% + pattern%), rounded up. Gravel (tonnes) = area × base depth (m) × 1.6 t/m³ (compacted 0/32 crushed). Bedding sand (tonnes) = area × depth (m) × 1.5 t/m³ (0/5 grit). Edge restraint ≈ perimeter in metres. Polymeric sand ≈ 1 bag (25 kg) per 4 m² for 3–5 mm joints.
Base Preparation (DIN 18318)
Per DIN 18318: 10–15 cm compacted aggregate base for pedestrian patios, 15–20 cm for driveways. Lay a 2.5–4 cm screeded bedding course of 0/5 mm grit; do not over-thicken. Compact the base in 5 cm lifts to ≥98% Proctor. For a poured concrete drive instead of pavers, see the concrete driveway calculator; set adjacent posts with the post hole concrete calculator, and balance earthworks on sloped sites with the cut/fill calculator.
On install day
Three things estimators forget. Pallet rounding — concrete block ships in pallets of 8–12 m² (size dependent); if the count lands a few pieces shy of a full pallet, push it up rather than mix dye batches later. Typical 2025 EU delivered prices: €18–35/m² for 100×200 mm holland brick, €25–55/m² for 300×300 mm slabs, €45–95/m² for tumbled or premium textures. Geotextile + edge restraint — a non-woven fabric (≥120 g/m²) between subgrade and base stops the 0/32 base migrating into the soil; haunch the perimeter with a concrete fillet or pin a plastic edge every 30 cm per DIN 18318. Joint sand wash-in — sweep polymeric jointing sand bone-dry, blow off the surface, then activate with a fine mist; trapping any wet sand on the paver face leaves a permanent haze.
FAQ
Which pattern wastes the most? 45° herringbone adds ~10% for cuts; running bond and basket weave ~5%; stack bond is minimal. Concrete vs. plastic edging? A concrete haunch is the most durable restraint; plastic edging installs faster on stable, well-compacted bases. Why limit bedding to 2.5–4 cm? Thicker grit consolidates unevenly and the surface ruts under load.
