Construction · Index
Construction math, done right.
Free calculators for the materials you order and the things you build. Imperial or metric. With the waste factor done right and the rounding-up step nobody else does.
Most calculators give you a raw number and call it done. Real orders happen in supplier increments: half-yard of ready-mix, whole bundles of shingles, full sheets of drywall. We do the rounding here so you don't run short on site.
01 Concrete & masonry
- Concrete volume calculatorslabs · columns · footings
- Concrete bag calculator40 · 60 · 80 lb compared
- Concrete weight calculatorpounds · tons · dead load · hauling
- Sonotube volume calculatorround footings · frost depth · bags
- Fence post calculatorconcrete per hole · depth by frost · bags
- Brick calculatormodular · queen · utility compared
- Concrete block wall calculator8×8×16 · half-blocks · mortar bags
- Retaining wall block calculatorblocks · caps · drainage gravel · base
- Rebar spacing calculatorbar count · ties · chairs · weight
- Concrete countertop calculatorGFRC vs solid · bags · weight