Excavation & Earthworks
Calculators for excavation planning, soil management, hauling logistics, and OSHA trench safety compliance. Covers trench volume, foundation dig, swell and shrink conversion, truckload estimation, and cost breakdowns.
Excavation Volume Calculator
earthworks
Estimate dig volumes for trenches, foundations, and site clearance, with soil swell factors to plan spoil removal and haulage.
Trench Volume Calculator
earthworks
Calculate trench excavation volume for utilities, footings, and drainage with rectangular or trapezoidal cross-sections. Includes soil swell factors and OSHA depth warnings.
Topsoil Removal Calculator
earthworks
Estimate topsoil stripping volume, weight, and truckloads from area and strip depth for site preparation and grading projects.
Soil Swell & Shrink Calculator
earthworks
Convert between bank, loose, and compacted soil volumes instantly. Enter any one volume state to see all three with soil-specific swell and shrink factors.
Dump Truck Load Calculator
earthworks
Calculate how many dump truck trips you need with both volume and weight limit checks. Compares volume-limited and weight-limited trip counts.
Foundation Excavation Calculator
earthworks
Calculate foundation dig volume for slab, crawlspace, or basement with working room allowance and optional strip footing volume.
Backfill Calculator
earthworks
Calculate backfill material needed after pipe installation with compaction factor and pipe displacement.
Cut and Fill Calculator
earthworks
Calculate cut and fill balance with swell and shrink factors for earthwork grading.
Spoil Pile Calculator
earthworks
Calculate spoil pile footprint, height, and staging area from excavated volume.
Excavation Cost Calculator
earthworks
Estimate excavation costs with itemized breakdown: dig, hauling, disposal, labor, equipment.
OSHA Trench Sloping Calculator
earthworks
Calculate OSHA-compliant trench slope setback and top width by soil type.
Concrete & Masonry
Calculate exact quantities for concrete pours, block walls, mortar, and reinforcement. From slabs and footings to retaining walls and thinset adhesive, these tools handle the volume math so you order the right amount.
Concrete Slab Calculator
concrete
Estimate concrete volume in cubic meters and bag counts for slabs, footings, and pads based on length, width, and thickness.
Mortar & Thinset Calculator
adhesives
Calculate bags of mortar or thinset adhesive needed for tiling and brickwork based on area, notch size, and coverage rate.
Concrete Bags Calculator
concrete
Convert a concrete volume into the number of pre-mix bags you need, with options for common bag sizes and mix strengths.
Block Wall Calculator
masonry
Estimate CMU blocks and mortar bags for masonry walls based on wall dimensions, block size, and joint thickness.
Rebar Calculator
concrete
Calculate reinforcing steel bar count, total length, and weight for concrete slabs and footings based on spacing and bar size.
Retaining Wall Calculator
masonry
Calculate retaining wall blocks, cap blocks, backfill gravel, drain pipe, and filter fabric for CMU and landscape block walls.
Roofing & Structure
Accurate material counts for roofing, wall framing, insulation, and exterior cladding. From measuring roof pitch to counting shingles, calculating gutter runs, and estimating insulation rolls for walls and ceilings.
Roof Area Calculator
roofing
Calculate true roof surface area from footprint dimensions, accounting for roof pitch, overhangs, and common roof shapes.
Shingles Calculator
roofing
Convert roof area into shingle bundles, squares, and ridge cap quantities for accurate roofing material orders.
Gutter & Downspout Calculator
roofing
Calculate gutter sections, downspouts, elbows, and end caps from roof perimeter, corners, and building height.
Roof Underlayment Calculator
roofing
Calculate rolls of synthetic underlayment or roofing felt needed from roof area with overlap factor applied.
Ridge Cap Calculator
roofing
Calculate ridge cap and hip cap shingle pieces and bundles from ridge and hip lengths.
Siding Calculator
exterior
Calculate siding squares, boards, or board-feet needed from wall area with window and door deductions.
Insulation Calculator
insulation
Estimate insulation rolls or batts needed for walls, ceilings, and floors, with R-value layering and stud-spacing adjustments.
Stud Wall Framing Calculator
framing
Get a full material list for wall framing — studs, top plates, bottom plates, and blocking — based on wall length and stud spacing.
Surfaces & Finishes
Figure out what you need for paint, tile, flooring, drywall, and decking. These tools account for waste factors, pattern layouts, coverage rates, and finish levels so you buy the right amount the first time.
Paint Coverage Calculator
paint
Calculate how many liters of paint you need for walls, ceilings, and trim using room dimensions, coat count, and standard coverage rates.
Tile Calculator
flooring
Work out how many tiles to order for floors and walls, with waste factors adjusted for grid, diagonal, and herringbone patterns.
Flooring Calculator
flooring
Estimate flooring materials — laminate, vinyl, or hardwood — for any room size, including waste allowance for cuts and fitting.
Drywall Calculator
interior
Calculate the number of drywall sheets for walls and ceilings, with deductions for doors, windows, and standard sheet sizes.
Self-Leveling Compound Calculator
flooring
Calculate bags of self-leveling compound for floor preparation based on area, pour depth, and product coverage rate.
Decking Calculator
outdoor
Calculate deck boards needed for your outdoor deck, with waste factors adjusted for board direction, joist spacing, and deck shape.
Primer Calculator
paint
Calculate primer gallons needed for drywall, wood, masonry, or previously painted surfaces with coverage rates by surface type.
Joint Compound Calculator
interior
Calculate joint compound, paper tape, and drywall screws by sheet count and finish level per Gypsum Association standards.
Landscaping & Site Work
Estimate materials for gravel driveways, garden beds, mulch coverage, and paving projects. Convert between volume and weight for bulk materials delivered by the truckload.
Gravel Calculator
landscaping
Calculate gravel volume in cubic meters and weight in tonnes for driveways, paths, and drainage, with density values by material type.
Paver Calculator
landscaping
Estimate paver quantities for patios, driveways, and walkways, including waste allowance for cutting patterns and edge trimming.
Topsoil & Mulch Calculator
landscaping
Estimate topsoil, mulch, or bark quantities by area and desired depth for garden beds, lawn prep, and landscaping projects.
Utilities & Converters
Convert between metric and imperial units or translate volume to weight for common construction materials. Handy reference tools that support every other calculator on this site.
Unit Converter
utilities
Convert between metric and imperial measurements for length, area, volume, and weight — built for construction dimensions.
m3 to Tonnes Calculator
utilities
Convert cubic meters to tonnes for common construction materials like gravel, sand, soil, and crushed stone using material-specific densities.
How to Use These Calculators
Step 1
Measure Your Space
Take accurate length, width, and depth measurements of the area you plan to cover, fill, or build. Double-check corners and irregular sections.
Step 2
Enter Your Numbers
Choose the calculator that matches your project and enter your measurements. Each tool adjusts for waste factors, coverage rates, and packaging sizes automatically.
Step 3
Order with Confidence
Get an instant material list with quantities, bag counts, or board counts. Most estimates include a waste buffer so you don't run short mid-project.
Why Accurate Material Estimation Matters
Over-ordering construction materials wastes money and creates disposal headaches. Under-ordering means project delays, extra delivery fees, and the risk of mismatched material batches. Our calculators use industry-standard formulas and waste factors so your estimates land in the sweet spot: enough material to finish the job with a small safety margin, without buying more than you need.
Every calculator on this page is free, works on any device, and requires no sign-up. Enter your measurements, get your result, and head to the store. For a deeper understanding of the formulas and trade tips behind each tool, check the complete estimation guide.
In-Depth Guides
Go beyond the numbers. Each guide explains the formulas, waste factors, and real-world tips behind every calculator in its category.
Excavation & Earthworks Guide
Calculators for excavation planning, soil management, hauling logistics, and OSHA trench safety compliance.
Concrete & Masonry Guide
Calculate exact quantities for concrete pours, block walls, mortar, and reinforcement.
Roofing & Structure Guide
Accurate material counts for roofing, wall framing, insulation, and exterior cladding.
Surfaces & Finishes Guide
Figure out what you need for paint, tile, flooring, drywall, and decking.
Landscaping & Site Work Guide
Estimate materials for gravel driveways, garden beds, mulch coverage, and paving projects.
Utilities & Converters Guide
Convert between metric and imperial units or translate volume to weight for common construction materials.
Full Estimation Guide
The complete guide covering every category with examples and comparison tables.