Construction Estimate Tools

Free, instant calculators for concrete slabs, foundations, earthworks, driveways, retaining walls, reinforcement and materials — built from the same figures HPL Construction uses to plan real Melbourne projects. Search or filter below to find the right tool, then request a free quote when you're ready for an exact price.

All ToolsHouse SlabsFoundationsEarthworksConcreteDrivewaysRetaining WallsReinforcementMaterials
House SlabsWaffle Slab CalculatorInstant cost estimate for a standard residential waffle slab, including optional bored piers.House SlabsRaft Slab CalculatorEstimate the cost of a standard residential raft slab, including optional bored piers.House SlabsReinforced Slab CalculatorWork out concrete volume and mesh reinforcement for a standard slab on ground.FoundationsFoundation CalculatorEstimate concrete volume for pad and strip foundations beneath a structure.FoundationsBored Pier CalculatorCalculate concrete volume for bored piers by diameter, depth and quantity.FoundationsScrew Pile CalculatorEstimate the number and length of screw piles needed along a bearer run.FoundationsStrip Footing CalculatorCalculate concrete volume, weight and truck loads for strip footings.EarthworksExcavation CalculatorEstimate excavation volume, bulked soil volume and truck loads for any dig.EarthworksSite Cut CalculatorCompare existing ground level to finished floor level to size your site cut or fill.EarthworksSoil Removal CalculatorWork out bulked soil volume and disposal truck loads for spoil removal.ConcreteConcrete Volume CalculatorCalculate concrete volume, recommended order and approximate weight.ConcreteConcrete Pump CalculatorEstimate the pump size and indicative hire cost for your concrete pour.ConcreteConcrete Cost CalculatorGet an indicative supply cost for your concrete volume, including GST.ConcreteConcrete Mix CalculatorWork out cement, sand and aggregate quantities for a given mix ratio.DrivewaysConcrete Driveway CalculatorEstimate concrete, base rock, mesh and accessories for a new driveway.DrivewaysExposed Aggregate CalculatorEstimate materials for an exposed aggregate driveway or path, including sealer.DrivewaysColoured Concrete CalculatorEstimate concrete and oxide colour quantities for a coloured concrete pour.Retaining WallsConcrete Sleeper Retaining Wall CalculatorEstimate posts, concrete sleepers, piers and drainage for a concrete sleeper wall.Retaining WallsTimber Sleeper Retaining Wall CalculatorEstimate posts, timber sleepers, piers and drainage for a timber sleeper wall.Retaining WallsSteel Post CalculatorWork out how many steel posts you need for a wall or fence run, by spacing.ReinforcementReinforcement Mesh CalculatorCalculate how many standard mesh sheets you need, allowing for laps.ReinforcementRebar CalculatorCalculate bar quantity, length and weight for a reinforcement grid.ReinforcementTrench Mesh CalculatorWork out how many 6 m trench mesh sticks you need for footings.ReinforcementBar Chair CalculatorEstimate bar chairs needed to support reinforcement at the correct height.MaterialsMaterial EstimatorCompare crushed rock, sand and aggregate volumes and tonnages side by side.MaterialsGravel CalculatorEstimate gravel volume and tonnage for paths, drainage and landscaping.MaterialsSand CalculatorEstimate bedding sand volume and tonnage for paving and slab preparation.MaterialsCrushed Rock CalculatorEstimate crushed rock volume and tonnage for driveway and slab sub-base.MaterialsFill CalculatorEstimate imported fill volume and truck loads to raise a site to level.

Free Calculators Built From Real Project Figures

Every calculator in this section is based on the same measurements, densities and standard trade practices HPL Construction uses when we plan residential concreting and excavation work across Melbourne and Victoria. Enter your project's dimensions and each tool works through the maths in the background — converting an area or length into a concrete volume, a bored pier count, a truck load count, or a materials list — so you get a realistic planning figure in seconds rather than guessing.

Where a calculator produces a dollar estimate, it uses a clearly stated rate and includes GST, and always notes that it is indicative only. Where a project depends heavily on site-specific factors — soil type, access, engineering requirements — the calculator focuses on the quantities themselves (concrete volume, steel weight, tonnes of material) rather than a fabricated price, so the numbers stay genuinely useful rather than misleadingly precise.

How To Use These Tools

Pick the calculator that matches the work you're planning, or use the search bar and category filters above to browse by House Slabs, Foundations, Earthworks, Concrete, Driveways, Retaining Walls, Reinforcement or Materials. Most calculators only need two or three measurements — area, length, depth or diameter — and explain what each result means as you go. Every calculator page also explains the formula behind the result, so you can see exactly how the figure was produced.

Estimates vs. A Fixed Quote

These tools are designed for early planning — budgeting, comparing options, and working out roughly what a project involves before you engage a contractor. They are not a substitute for a site inspection. Soil conditions, access, existing structures and council requirements can all affect the final scope and price. When you're ready to move forward, request a free quote and our team will confirm exact quantities and a fixed price after assessing your site.

1,000+
Projects Completed
29
Free Estimate Tools
Licensed
& Fully Insured
Melbourne
& Victoria Wide

Frequently Asked Questions

Are these estimate tools free to use?

Yes. Every calculator on this page is free to use, with no sign-up required, and gives you an instant result based on the figures you enter.

How accurate are the estimates?

Each calculator uses standard construction formulas and, where a dollar figure is shown, a clearly stated indicative rate. They are accurate for planning and budgeting purposes, but final scope and pricing should always be confirmed on site, since soil conditions, access and existing structures can affect the real cost.

Can I get a fixed price instead of an estimate?

Yes. Once you have an idea of scope from the calculators, request a free quote and HPL Construction will inspect the site and provide a fixed, accurate price for your project.

Which calculator should I use for a new house slab?

Use the Waffle Slab Calculator or Raft Slab Calculator depending on your slab type, or the Reinforced Slab Calculator for a general reinforced slab on ground. If you're not sure which slab type suits your site, request a free quote and our team can advise.

Do the calculators include GST?

Where a calculator produces a dollar estimate, GST is calculated and shown separately alongside the total, consistent with standard Australian trade pricing.

Waffle Slab CalculatorInstant cost estimate for a standard residential waffle slab, including optional bored piers.Concrete Driveway CalculatorEstimate concrete, base rock, mesh and accessories for a new driveway.Concrete Sleeper Retaining Wall CalculatorEstimate posts, concrete sleepers, piers and drainage for a concrete sleeper wall.

Ready For An Exact Price?

Our calculators give you a fast planning figure. For a fixed, accurate price backed by a site assessment, request a free professional quotation from HPL Construction.

Request A Free QuoteCall Our Team
Request a Quote