Paving Bricks Calculator
Work out exactly how many paving bricks and how much bedding sand your driveway, patio, pathway or garden area needs before you order. Whether you’re laying standard clay pavers, tumbled concrete pavers or large-format slabs, this tool applies South African coverage rates to give you a complete materials breakdown in seconds. Pick a common project or enter your own area dimensions to get an instant, wastage-included estimate.
Calculate My Pavers ↓Paving Bricks Calculator
Select a project type or enter your own area, choose your paver size, then press Calculate to see your full materials list including pavers, bedding sand and edge restraint.
Total Pavers Needed
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Project summary
Full materials breakdown
| Material | Quantity | Unit | Notes |
|---|
This total is based on the coverage rate for your chosen paver type across your paving area.
A standard South African clay paver (220 x 110 x 50mm) covers approximately 41 pavers per square metre including a 3mm joint. Tumbled concrete pavers (200 x 100 x 50mm) need roughly 50 pavers per square metre, while large-format slabs (400 x 400mm) need around 6.25 per square metre and cobble pavers (160 x 160mm) need approximately 36 per square metre. You will also need a 30mm bedding sand layer, which works out to roughly 0.03 cubic metres of sharp sand per square metre. Always add 10% wastage for running bond and 15% for herringbone or 45° diagonal patterns to cover cutting and border losses.
How to Use the Paving Bricks Calculator
Four quick steps to an accurate paver and sand estimate for your project.
- 1 Choose your project. Pick a common preset such as a single car driveway or garden patio, or select “Custom Area” to enter your own length, width and any obstructions to deduct.
- 2 Select paver type. Choose the paver size that matches what you plan to buy. Standard clay pavers suit driveways and paths; large-format slabs suit patios and pool surrounds.
- 3 Set your laying pattern and wastage. Choose running bond for minimal waste or herringbone/45° for a stronger interlock pattern on driveways. Leave wastage ticked to add a buffer for cutting and breakage.
- 4 Press Calculate. Your total pavers, bedding sand and edge restraint length will appear instantly. Use “Copy Result” to save it for your project budget or shopping list.
The Paving Bricks Formula
Paver quantities are based on a fixed coverage rate per square metre for each paver size, including a standard 3mm joint allowance, so the calculation is a straightforward multiplication.
If Running Bond Wastage Applied: Pavers Needed = Pavers Needed × 1.10
If Herringbone Wastage Applied: Pavers Needed = Pavers Needed × 1.15
Bedding Sand (m³) = Paving Area (m²) × 0.03 (30mm compacted layer)
Edge Restraint (m) = Perimeter of paved area
Paving area is multiplied by the coverage rate for the chosen paver size to get the raw paver count, which is then rounded up to a whole unit. Bedding sand is calculated at a standard 30mm compacted depth below the pavers as recommended for pedestrian and light vehicle paving in South Africa, rounded up to the nearest 0.1 cubic metre for practical ordering. Edge restraint is estimated from the perimeter of the area to help with planning border quantities.
Worked Examples
Real project calculations using standard South African paver coverage rates, so you can see exactly how each total is built.
Example 1: Single car driveway, standard clay paver, running bond, with wastage
| Paving area (3m x 6m) | 18 m² |
| Pavers needed (18 × 41, +10% wastage) | 812 pavers |
| Bedding sand (18 × 0.03, rounded up) | 0.6 m³ |
| Edge restraint (perimeter) | 18 m |
Example 2: Garden patio, tumbled concrete paver, herringbone, with wastage
| Paving area (4m x 5m) | 20 m² |
| Pavers needed (20 × 50, +15% wastage) | 1,150 pavers |
| Bedding sand (20 × 0.03, rounded up) | 0.6 m³ |
| Edge restraint (perimeter) | 18 m |
Example 3: Pool surround, large-format slab, running bond, with wastage
| Paving area (approx.) | 40 m² |
| Pavers needed (40 × 6.25, +10% wastage) | 275 slabs |
| Bedding sand (40 × 0.03, rounded up) | 1.2 m³ |
| Edge restraint (perimeter) | approx. 26 m |
Paving Bricks Calculator: The Complete Guide
Getting your paver and sand quantities right before you order saves you unnecessary trips to the builders merchant, avoids costly under-ordering delays midway through a project, and stops you from overspending on materials you will never use. This guide explains the different paver types available in South Africa, how coverage rates work, what bedding sand depth to use, and how laying pattern affects your waste allowance.
What types of paving bricks are available in South Africa?
South African paving projects typically use one of four main paver types. Standard clay pavers (220 x 110 x 50mm) are fired clay units well suited to driveways, paths and patios, prized for their durability and colour retention. Tumbled concrete pavers (200 x 100 x 50mm) are a popular and cost-effective option for residential paving with a slightly textured, aged appearance. Large-format concrete slabs (400 x 400 x 50mm or larger) create a clean, modern look and are commonly used for pool surrounds, courtyards and contemporary patios. Cobble or rumble pavers (160 x 160 x 50mm) mimic a traditional cobbled appearance and are used for feature pathways, entrance areas and decorative borders.
How are paver quantities calculated?
Coverage in South Africa is based on the number of pavers that fit within one square metre of paved area, calculated from the paver’s face dimensions plus a standard 3mm joint gap. Multiply your total paving area by the coverage rate for your chosen paver size to get the raw paver count, then add a wastage allowance based on your laying pattern. Bedding sand is calculated separately at a standard 30mm compacted depth across the full area.
Standard paver sizes and coverage rates in South Africa
- Standard clay paver (220 x 110 x 50mm): Approximately 41 pavers per square metre with a 3mm joint. The most widely used paving brick for driveways and paths in South Africa.
- Tumbled concrete paver (200 x 100 x 50mm): Approximately 50 pavers per square metre with a 3mm joint. Cost-effective and widely available, suitable for patios, paths and light driveways.
- Large-format slab (400 x 400 x 50mm): Approximately 6.25 slabs per square metre with a 5mm joint. Fewer units needed, faster installation, popular for modern pool surrounds and courtyards.
- Cobble / rumble paver (160 x 160 x 50mm): Approximately 36 pavers per square metre with a 5mm joint. Decorative option for feature pathways, entrance areas and garden borders.
Running bond vs herringbone and 45° laying patterns
Running bond, also called stretcher bond, lays pavers in straight rows with staggered joints and produces very little cutting waste. It is the simplest pattern to lay and works well for paths, patios and informal driveways. Herringbone and 45° diagonal patterns interlock the pavers at angles that significantly improve the structural performance of a driveway under vehicle loads, which is why they are recommended by SANS (South African National Standard) for trafficked areas. The trade-off is that angled patterns create considerably more cut pieces along the edges and borders, which is why a higher 15% wastage allowance is standard practice for herringbone and 45° layouts compared to 10% for running bond.
How much bedding sand do you need for paving?
The standard bedding layer for interlocking concrete pavers and clay pavers in South Africa is a 30mm compacted layer of coarse sharp sand, sometimes called screeding sand or crusher dust, laid directly below the pavers. This works out to 0.03 cubic metres of sand per square metre of paved area before compaction. Note that bedding sand compacts by roughly 15-20% once the pavers are vibrated in, so many contractors order a little extra. This calculator uses the standard 30mm pre-compaction depth as a practical estimate.
Do you need sub-base material and base layers?
For most driveways and trafficked areas, pavers should be laid over a compacted granular sub-base, typically 100-150mm of G2 or crusher-run gravel, before the bedding sand layer. For pedestrian-only patios and paths, a 50-75mm compacted base may be sufficient depending on the soil conditions. This calculator estimates paver and bedding sand quantities only. Sub-base material requirements depend on the load, soil type and intended use of the surface and are best confirmed with a paving contractor or civil engineer for driveways and vehicle-trafficked areas.
Why wastage allowance matters for paving
Paving projects always produce cut pieces along borders, around drains and obstacles, and where the pattern meets edges or curves. Even straight-edged rectangular areas produce waste at the perimeter. Adding 10% for running bond and 15% for herringbone or 45° patterns is standard industry practice in South Africa and avoids a costly and often colour-mismatched top-up order at the end of the job. Face bricks and clay pavers in particular can vary between production batches, so ordering your full quantity including wastage from a single batch is strongly recommended.
Tips for reducing waste and overspending on paving projects
- Measure the area carefully. Deduct the footprint of any fixed obstacles such as drains, pillars or garden beds, especially on smaller areas where obstructions take up a larger share of the surface.
- Order from the same batch. Clay pavers and coloured concrete pavers can vary slightly between production batches. Order your full quantity, including wastage, from one batch to avoid colour variation in your finished surface.
- Store pavers on pallets. Keep pavers off bare ground and covered until installation to avoid staining, chipping and moisture absorption before they are laid.
- Plan your pattern before cutting. Lay out the pattern dry before cutting to minimise off-cuts and identify where whole pavers can fill border areas.
- Use a plate compactor after laying. Vibrating the pavers into the bedding sand with a plate compactor and topping up with jointing sand afterwards is essential for an interlock surface that resists movement and weed growth.
- Check with your municipality on driveway crossings. Any paved area connecting to a public road, including a driveway apron or crossing, may require local council approval before construction.
Methodology
Coverage rates used in this calculator are based on standard South African paving industry figures for each paver face size with a 3mm joint (5mm for larger format pavers): 41 pavers per square metre for standard clay pavers (220 x 110mm), 50 per square metre for tumbled concrete pavers (200 x 100mm), 6.25 per square metre for large-format slabs (400 x 400mm) and 36 per square metre for cobble pavers (160 x 160mm). Bedding sand is estimated at a standard 30mm compacted depth of 0.03 cubic metres per square metre. Wastage factors of 10% (running bond) and 15% (herringbone/45°) reflect standard South African contractor practice for residential paving. Actual requirements vary based on paver batch tolerances, joint width, base preparation, site shape and laying pattern, so always confirm exact quantities with your supplier or paving contractor before ordering for a project where accuracy is critical.
Assumptions used in this calculator
- All coverage rates assume a standard 3mm joint for clay and concrete pavers and a 5mm joint for large-format slabs and cobbles.
- Wastage, when applied, adds 10% for running bond and 15% for herringbone/45° patterns to the raw paver count.
- Bedding sand is estimated at 0.03 m³ per square metre (30mm compacted depth) of sharp/coarse sand.
- Edge restraint length is estimated from the perimeter of the paved area.
- Preset projects use typical standard dimensions and may not reflect your exact area shape or site conditions.
- This tool does not calculate sub-base gravel, cement mortar bedding, jointing sand, sealant, adhesive or material costs.
Frequently Asked Questions
Coverage depends on the paver size and joint width. Standard clay pavers (220 x 110mm) cover approximately 41 pavers per square metre with a 3mm joint. Tumbled concrete pavers (200 x 100mm) need around 50 per square metre. Large-format slabs (400 x 400mm) need approximately 6.25 per square metre and cobble pavers (160 x 160mm) need around 36 per square metre. Use the calculator above for an exact figure based on your specific area and paver type.
Running bond lays pavers in straight parallel rows with offset joints, similar to a brick wall. It is simple to lay and produces minimal waste, making it popular for paths and patios. Herringbone and 45° diagonal patterns interlock the pavers at angles, which significantly improves load distribution and resistance to shifting under vehicle traffic. Herringbone is the pattern recommended by SANS for driveways and trafficked surfaces but produces more cut pieces at borders, which is why a 15% wastage allowance is used instead of 10%.
The standard bedding layer below interlocking pavers is 30mm of compacted coarse sharp sand, also called screeding sand or crusher dust. This works out to 0.03 cubic metres of sand per square metre of paved area. The sand compacts by 15-20% once the pavers are vibrated in, so many contractors order slightly more than the calculated amount. This calculator uses the standard 30mm depth as a practical estimate.
A 10% wastage allowance is standard practice for running bond and straight laying patterns to cover border cuts, breakage and handling losses. For herringbone and 45° diagonal patterns, a 15% allowance is recommended because angled cuts at every edge produce significantly more off-cuts. This calculator applies the appropriate wastage factor automatically based on your chosen pattern.
For driveways and any area that will carry vehicle loads, a compacted granular sub-base of 100-150mm of G2 or crusher-run gravel is required below the bedding sand layer to prevent the pavers from sinking or shifting. For pedestrian-only patios and paths, a 50-75mm compacted base may be sufficient depending on soil conditions. This calculator estimates paver and bedding sand quantities only. Sub-base requirements should be confirmed with a paving contractor or civil engineer for vehicle-trafficked surfaces.
Select “Custom Area” from the project dropdown, then enter your area’s length and width in metres, and subtract the combined area of any fixed obstacles such as drains, garden beds or pillars. For irregular-shaped areas, break the space into rectangular sections, calculate each separately, and add the totals together. The calculator multiplies the net area by the coverage rate for your chosen paver size to give an exact paver and sand total.
Yes. Run the calculator twice, once for your driveway area and once for your patio area, then add the paver and sand totals together. If the two areas use different paver types or laying patterns, this ensures each gets the correct coverage rate and wastage allowance applied separately.