Concrete Calculator
Estimate volume and bag count for a rectangular slab.
ONE LESS THING TO WORK OUT
Home & Projects
Measure twice. Order with confidence.
6 free calculators · Formulas included6 calculatorsin Home & Projects
Bonsai & Terrarium Substrate Mix Quantities
Scale your chosen three-component mix and see the volume required for each material.
Gravel Calculator
Estimate gravel volume, weight, and bag quantities.
Paint Calculator
Plan paint quantities from area, coverage, and coats.
Solar Panels & Battery Scenario
Convert a daily energy goal into illustrative panel and storage quantities.
Tile Calculator
Estimate tiles and full boxes, with a waste allowance.
Every tool is free. Formulas and assumptions are included.