12 free calculators · no signup
Construction math, solved instantly.
Single-purpose calculators for concrete, gravel, drywall, paint, tile, flooring and lumber — built for accuracy and speed.
Concrete & Aggregate
View all →Concrete & Aggregate
Cubic Yard Calculator
Use this cubic yard calculator to quickly convert length, width and depth into cubic yards — the standard unit suppliers use to price concrete, gravel, mulch and topsoil. Enter an optional price per cubic yard to get an instant cost estimate for your project.
Concrete & Aggregate
Concrete Calculator
This concrete calculator estimates how much ready-mix or bagged concrete you need for a slab, sidewalk, pad or footing. It accounts for a waste percentage and converts the total into the three most common bag sizes so you can buy the right amount the first time.
Concrete & Aggregate
Gravel Calculator
Enter the dimensions of the area you are covering with gravel and this calculator returns both cubic yards (how landscape supply yards price it) and tons (how stone quarries weigh it). Default density is 1.4 tons per cubic yard, typical for crushed stone — adjust for pea gravel or road base.
Concrete & Aggregate
Asphalt Calculator
Use this calculator to estimate the tons of hot-mix asphalt needed to pave a driveway, walkway or parking pad. It assumes a standard compacted density of 145 pounds per cubic foot, the value most paving contractors quote against.
Concrete & Aggregate
Mulch Calculator
Mulch keeps roots cool, slows weeds and locks in moisture — but only at the right depth. Enter your bed area and target depth to see how many cubic yards (for bulk delivery) or 2 cu ft bags (for store pickup) you need.
Concrete & Aggregate
Topsoil Calculator
Whether you are filling a raised bed, leveling a lawn or topping a new install, this topsoil calculator converts your bed dimensions into both cubic yards and tons. Default density is 1.1 tons per cubic yard for screened topsoil — wetter or denser soils run higher.
Drywall & Paint
View all →Drywall & Paint
Drywall Calculator
Enter the total square footage of wall and ceiling area you need to cover and this drywall calculator returns how many 4×8 or 4×12 sheets to buy, an approximate screw count and gallons of joint compound. A waste factor handles cutoffs around doors, windows and odd corners.
Drywall & Paint
Paint Calculator
Tell this paint calculator your wall area, how many coats you plan to apply and the coverage rating from the paint can, and it returns the exact and rounded-up gallons you need. Most interior latex paints cover about 350 ft² per gallon on primed walls.
Lumber
View all →Flooring & Tile
View all →Flooring & Tile
Tile Calculator
This tile calculator converts the area you are tiling into the number of individual tiles and boxes you need to order. It accounts for cuts and breakage with a waste factor — bump it higher for diagonal layouts and intricate patterns.
Flooring & Tile
Flooring Calculator
Use this flooring calculator for hardwood, laminate, LVP, vinyl and engineered floors. It adds a waste factor to your room area and converts the total into the number of boxes you need to buy based on each box's coverage.