Construction Calculators

Free browser based tools for estimating materials, quantities and basic project costs. Choose a calculator by project type or material.

Popular: Concrete · Gravel · Roofing · Fencing

Concrete

Concrete Volume Calculator

Calculate concrete volume for a rectangular slab, footing, or pad.

Concrete Bag Calculator

Estimate the number of concrete bags needed for a project.

Concrete Weight Calculator

Estimate concrete weight from volume and density.

Concrete Footing Calculator

Estimate rectangular concrete footing volume.

Rebar Length Calculator

Estimate total rebar length from bar count and bar length.

Asphalt Calculator

Estimate asphalt volume for a rectangular area.

Gravel & Soil

Gravel Calculator

Calculate the volume of gravel required for an area.

Mulch Calculator

Calculate the amount of mulch required for a garden area.

Sand Calculator

Calculate sand volume required for an area.

Soil Calculator

Calculate soil volume required for a garden or planting area.

Gravel Weight Calculator

Estimate gravel weight from volume and bulk density.

Gravel Bag Calculator

Estimate the number of gravel bags needed from volume and bag coverage.

Interior

Paint Calculator

Estimate paint required from wall area, coverage and coats.

Flooring Calculator

Estimate flooring material including a waste allowance.

Tile Calculator

Estimate the number of tiles required for a floor or wall.

Drywall Calculator

Estimate drywall sheets required from room dimensions.

Baseboard Calculator

Estimate the number of baseboard pieces needed for a room.

Wallpaper Roll Calculator

Estimate wallpaper rolls from wall area and roll coverage.

Lumber & Decking

Board Feet Calculator

Calculate board feet from lumber dimensions and quantity.

Decking Board Calculator

Estimate decking board quantity for a rectangular deck.

General

Material Cost Calculator

Calculate total material cost from quantity, unit price and waste.

Cubic Yard Calculator

Convert rectangular dimensions into cubic yards.

Area Calculator

Calculate rectangular area from length and width.

Volume Calculator

Calculate rectangular volume from length, width and height.

Outdoor

Paver Calculator

Estimate the number of pavers needed for an area.

Decking & Fencing

Fence Picket Calculator

Estimate the number of fence pickets needed for a straight fence run.

Fence Post Calculator

Estimate the number of fence posts needed for a fence run.

Stair Riser Calculator

Estimate stair riser count from total rise and riser height.

Roofing

Roofing Squares Calculator

Calculate roofing squares from roof area.

Roofing Material Calculator

Estimate roofing material area including a waste allowance.

Practical Guides

How to Calculate Concrete Volume for a Slab

Learn how to estimate concrete volume for a rectangular slab using length, width and thickness, with a practical example.

How to Calculate How Much Gravel You Need

Calculate gravel volume for driveways, paths and other rectangular areas from length, width and depth.

How to Calculate How Much Mulch You Need

Estimate mulch volume for garden beds using bed length, width and target depth.

How to Calculate Flooring Material Needed

Estimate flooring material from room dimensions and include a waste allowance for cuts and installation.

How to Calculate How Many Pavers You Need

Estimate paver quantity from the project area, paver dimensions and a waste allowance.

How to Calculate Roofing Squares

Learn how roofing squares are calculated from roof area and how to use the result for material planning.

How to Calculate Fence Posts

Estimate the number of fence posts from total fence length and planned post spacing.

Cubic Yards vs Cubic Feet: How to Convert

Understand the relationship between cubic feet and cubic yards and convert construction material volumes correctly.