Home & Building Calculators
Practical calculators for construction, materials, dimensions and everyday building projects.
Use the tools below to estimate quantities, weights, sizes and other common project values.
Home & building calculators
Rebar Weight Calculator
Calculate steel reinforcing bar weight from bar size, length and quantity.
Calculate rebar weight →Gutter Size Calculator
Estimate roof runoff flow for gutter sizing from drainage area, rainfall intensity and number of downspouts.
Open calculator →Pool Surface Area Calculator
Calculate the surface area of rectangular, circular, oval and kidney-shaped swimming pools.
Open calculator →Heating Cost Calculator
Estimate heating running costs using power, daily use, energy price, efficiency or heat-pump COP.
Calculate heating cost →Useful tools for home and construction projects
These calculators are designed for practical estimation tasks where clear measurements and assumptions matter.