Start with your project
Find the right tool.
Landscape & Groundwork
Estimate areas, fill, ground materials and excavation quantities.
Explore tools →16 toolsFloors & Walls
Estimate surface coverings, masonry faces and product quantities.
Explore tools →12 toolsWood & Trim
Estimate lumber volume, simple layouts, spacing and roof geometry.
Explore tools →6 toolsWater & Containers
Estimate internal capacity and actual water volume.
Explore tools →7 toolsCrafts & Making
Estimate cloth, stitching and material quantities for making projects.
Explore tools →10 toolsEnergy & Workshop Math
Convert between power, current, energy and airflow quantities.
Explore tools →Quick access
Common project calculators
Gravel Calculator
Find the cubic yards, tons and material cost for your gravel project.
Use calculator Floors & WallsConcrete Calculator
Find concrete volume for a slab, wall or cylindrical footing, with optional bag yield and cost.
Use calculator Floors & WallsPaint Calculator
Estimate finish paint, whole containers and a separate primer quantity.
Use calculator Floors & WallsTile Calculator
Estimate tiles and boxes for a room from area, tile size and waste allowance.
Use calculator Wood & TrimBoard Foot Calculator
Convert lumber dimensions into board feet and cost, per row and in total.
Use calculator Water & ContainersPool Volume Calculator
Estimate pool capacity from shape and depth, with a linear shallow-to-deep option.
Use calculatorMeasure your space
Use the diagram and field labels to find what to measure.
Enter your numbers
Choose units for each measurement. Extra settings are optional.
Check your estimate
See the calculation, allowances and quantities before you buy.
Understand the number you get.
Every calculator explains its formula and limits. Check the editable reference values and replace them with your supplier’s information before ordering.
How our calculations work →