Construction Calculators
Choose a subcategory or calculator below for inputs, results, formulas and clear working.
Explore Construction subcategories
Calculators and guides are grouped under their respective subjects.
Other Construction calculators
Tools assigned directly to this category.
Concrete
Calculators and practical guides for this subject.
Estimate materials before you order
These calculators help builders, contractors and DIYers estimate quantities and cutting plans. The concrete calculator works out volume in cubic yards or cubic metres, bag counts and cost for slabs, footings, columns and stairs. For reinforcement, the rebar calculator estimates bar count, length and steel weight, and the bar bending schedule calculator builds a BBS with cutting lengths and weights.
To reduce waste, the cut list optimizer, plywood, glass and tile tools plan cuts from stock sizes. Results are planning estimates: always follow the approved drawings and check quantities with your engineer or supplier.