Construction Calculators — Concrete, Gravel, Mulch & More
Free calculators for construction and landscaping projects. Calculate volume (cubic yards), weight (tons), bags needed, and cost estimates for concrete, gravel, mulch, sand, soil, asphalt, and pavers. All densities sourced from ASTM standards.
Choose a Calculator
Concrete Calculator
Slabs, footings, columns, block walls, and steps. Calculates cubic yards, 80/60/40 lb bags, and ready-mix cost. Supports 5 shape modes.
Gravel Calculator
Driveways, paths, and drainage. Calculates cubic yards, tons, and cost for gravel, pea gravel, crushed stone, and river rock.
Mulch Calculator
Garden beds and landscaping. Calculates cubic yards and bags (2 cu ft) for wood chip, bark, rubber, and straw mulch.
Cubic Yards Calculator
Generic volume calculator for any material. Length × Width × Depth in any unit → cubic yards, cubic feet, cubic meters.
Asphalt Calculator
Driveways and parking lots. Calculates tonnage and cost for hot mix asphalt at standard thickness.
Soil & Topsoil Calculator
Garden beds, raised beds, and lawns. Calculates cubic yards and bags for topsoil, garden soil, fill dirt, and compost.
Sand Calculator
Paver base, play areas, and masonry. Calculates tons and 50-lb bags for all-purpose, leveling, play, and polymeric sand.
Paver Calculator
Patios, walkways, and driveways. Calculates number of pavers, sand base, gravel base, and cost for common paver sizes.
Rebar Calculator
Concrete reinforcement. Calculates total length, weight, number of bars, and spacing from slab dimensions. Supports #3 through #8 bar sizes (10–25 mm).
Brick Calculator
Walls, patios, and walkways. Calculates bricks, mortar bags, and mason sand for standard, modular, queen, king, and utility sizes. Single or double wythe.
Interior & Finishing
Drywall Calculator
Walls and ceilings. Calculates sheets, joint compound, tape, and screws for any room size. Supports 4×8, 4×10, 4×12 sheets.
Tile Calculator
Floors, walls, and backsplash. Calculates tiles, boxes, mortar, and grout for any tile size with custom grout spacing.
Paint Calculator
Walls and ceilings. Estimates gallons of paint and primer with door/window deductions, coats, and surface-specific coverage. Imperial & metric.
Wallpaper Calculator
Estimates rolls (US single, double, and Euro) needed for any room. Accounts for pattern repeat, doors, windows, and waste.
Carpet Calculator
Estimates square yards (or m²) of carpet and padding plus seams and total cost. Supports 12 ft, 15 ft US rolls and metric 4 m / 5 m widths.
Lumber & Framing
Board Foot Calculator
Calculate board feet, total volume, and cost for any lumber order. Supports nominal and actual sizing in feet/inches or meters/cm. Includes price-per-BF estimator.
Stair Calculator
Risers, treads, stringer length, and slope angle from total floor-to-floor rise. Includes IRC building-code check (max 7¾″ riser, min 10″ tread).
Exterior
Fence Calculator
Posts, panels, rails, pickets, and concrete for wood, vinyl, or chain-link fences. Enter perimeter and gates — get a complete materials list and installed cost range.
Decking Calculator
Deck boards, joists, and screws for wood, composite, or hardwood decks. Supports 12″ or 16″ (300/400 mm) joist spacing and 8–20 ft (2.4–6.1 m) board lengths.
Roofing Calculators
Roof Pitch Calculator
Calculate roof pitch ratio (X/12), slope angle in degrees, and slope percentage from rise and run measurements.
Rafter Length Calculator
Calculate rafter length from building span, roof pitch, and overhang. Shows ridge height, rise, and run.
Shingle Calculator
Calculate roofing squares, bundles, and total shingles needed from roof dimensions, pitch, and waste factor.
Roof Area Calculator
Calculate roof square footage from ground floor dimensions and pitch. Converts to roofing squares.
Pool & Water
Pool Volume Calculator
Calculate how many gallons your pool holds. Supports rectangular, round, oval, and kidney shapes. Includes chemical dosing estimates.
Material Weight Reference
Approximate weight per cubic yard for common construction materials (ASTM-sourced densities):
| Material | lb/cu yd | Tons/cu yd |
|---|---|---|
| Concrete (mixed) | 4,050 | 2.03 |
| Gravel (loose) | 2,700 | 1.35 |
| Crushed stone | 2,700 | 1.35 |
| Sand (dry) | 2,700 | 1.35 |
| Asphalt (hot mix) | 3,915 | 1.96 |
| Topsoil (loose) | 2,025 | 1.01 |
| Mulch (wood chips) | 540 | 0.27 |
Values are approximate and vary with moisture content, compaction, and material grade. Source: ASTM C29 (aggregates), ACI 211.1 (concrete).
Related Converters
Volume → Weight (Construction)
Convert any volume (cu yd, cu ft, cu m) to weight for 214 construction materials with ASTM-sourced densities.
Weight → Volume (Construction)
Reverse: convert weight (tons, lbs, kg) to volume for construction materials.
Volume → Weight (Chemistry)
For chemicals and liquids: convert volume to mass using 400+ substance densities.
Frequently Asked Questions
How do I calculate how much material I need?
Measure length × width × depth (all in feet), then divide by 27 to get cubic yards. For weight, multiply cubic yards by the material density. Our calculators handle all conversions and unit mixing automatically.
What's the difference between cubic yards and tons?
Cubic yards measure volume; tons measure weight. The conversion depends on material density. For example, 1 cubic yard of gravel weighs about 1.35 tons (2,700 lbs), while 1 cubic yard of mulch weighs only about 0.27 tons (540 lbs).
Should I order extra material?
Yes, always add 5–10% for waste, spillage, and uneven terrain. For concrete, add 10% because it’s much better to have extra than to run short during a pour.
How many cubic feet are in a cubic yard?
Exactly 27 cubic feet (3 × 3 × 3). To convert cubic feet to cubic yards, divide by 27. To convert cubic yards to cubic meters, multiply by 0.7646.
Material densities sourced from ASTM C29 (Standard Test Method for Bulk Density of Aggregates) and ACI 211.1 (Standard Practice for Selecting Proportions for Normal Concrete). Actual weights vary with moisture content, compaction, and material grade.
