The Best Free Paver Patio Calculator (2026)
A paver patio or walkway looks simple until you are standing at the supply yard — a calculator only helps if it answers what actually comes up when you order: how many pavers, how much base and bedding sand, how much to add for cuts, and roughly what it will cost. Here is what to look for, and how the main free tools stack up.
What a paver patio calculator should give you
- Paver count for your actual paver size, not just a generic "pavers per square foot" — preset sizes save you a trip to go measure one.
- Base and bedding sand quantities, not just the pavers. A patio is a three-layer system (base, sand, pavers), and most tools stop at the top layer.
- A waste allowance you can adjust. Cuts around edges and curves use more material than a clean rectangle.
- Adjustable base and sand depth. A patio base in clay soil needs more depth than one with good drainage — a fixed assumption does not fit every yard.
- A cost range, not a single number. Self-install materials vs. professionally installed are very different budgets.
- A material list you can take to the yard, and a layout that works on a phone.
How the main free calculators compare
Based on the public tools as of October 2026 — features change, so check the live tool.
| Feature | Build Material Planner | Inch Calculator | Omni Calculator |
|---|---|---|---|
| Paver count | Yes | Yes | Yes |
| Preset paver sizes/types with pricing | Yes (4) | Reference table only (not selectable) | No (manual entry only) |
| Base material (crusher run) | Yes | Yes (fixed 4 in) | No |
| Bedding sand | Yes | Yes (fixed 1 in) | No |
| Polymeric sand (joint fill) | No | Yes | No |
| Adjustable base/sand depth | Yes | No (fixed) | N/A |
| Waste allowance built in | Yes (10%, adjustable) | No (guide text only) | No |
| Cost estimate | Range: DIY materials vs. professionally installed | Single figure (enter price) | Single figure (enter price) |
| Printable material list | Yes | No | No |
| Formula shown | Yes | Yes | Yes |
Notes on each
Inch Calculator — thorough — paver count, base material, bedding sand, and even polymeric sand for joint filling, with the formulas shown. The waste allowance is advisory text ("order at least 10% more, 20% for diagonal patterns") rather than built into the total, and base/sand depth are fixed assumptions (4 in / 1 in) you cannot adjust.
Omni Calculator — the simplest of the three — paver count and a cost total, with the full formula shown, and it can total multiple identical rectangular areas at once. It does not compute base material, bedding sand, or a waste allowance at all.
Most other free paver calculators — follow Omni's pattern more than Inch's — a paver count and a single cost figure, nothing about the base or sand underneath.
Our take
For an actual patio or walkway project we built the Paver Calculator to size the whole system in one pass: paver count from four preset types (or your own numbers), a compactable base and bedding sand each sized separately with adjustable depth, a 10% waste allowance you can adjust for cuts, and a cost range for self-install materials vs. professional installation. It shows every formula and assumption it used. One thing it does not do yet that Inch Calculator's does: polymeric sand for joint filling — if that matters for your project, budget a few extra bags beyond this estimate.
Frequently asked questions
How many pavers do I need for a patio?
Divide your patio's square footage by one paver's coverage area, then add a waste allowance for cuts — roughly 10% for a simple layout, more for diagonal or curved patterns. A calculator with preset paver sizes does the coverage-area lookup for you.
Do I need sand under pavers?
Yes, two different layers. A compactable base (crushed stone, typically around 4 inches) carries the load and drains water; a thin bedding sand layer (around 1 inch) on top gives the pavers a level surface to sit in. Skipping either layer is the most common reason a paver patio settles or shifts over time.
Is DIY paver installation cheaper than hiring a contractor?
Materials alone are a fraction of a professionally installed price — the rest is labor for base excavation, compaction, and edge restraint, which is easy to get wrong DIY and expensive to redo. A cost range that separates materials from installed pricing makes that trade-off clearer before you decide.
What is polymeric sand and do I need it?
Polymeric sand is swept into the joints between pavers and then set with water, binding into a firm, weed-resistant joint. It is a finishing step after the pavers are laid, not part of the base/bedding system below them — budget for it separately if your project needs it.