Construction Calculators
161 calculators
Construction calculators for materials, measurements, and building.
All Construction Calculators
AC Tonnage Calculator
Estimates AC tonnage from area and a BTU/h per ft² cooling-load factor (1 ton = 12,000 BTU/h).
Brick Calculator
Calculate number of bricks for a wall.
Concrete Calculator
Calculate concrete volume needed for your project.
Floor Area Ratio Calculator
Compute floor area ratio (FAR) from total building floor area divided by lot area.
Hole Volume Calculator
Calculates excavation volume for cylindrical, rectangular, or tapered holes, with optional waste fac
Paint Calculator
Calculate how much paint you need.
Pipe Volume Calculator
Calculates internal pipe volume from inner diameter and length.
Square Footage Calculator
Compute square footage from length and width, with optional quantity for multiple sections.
Tank Volume Calculator
Compute tank volume for rectangular or cylindrical tanks (results in m³ and liters).
Tonnage Calculator
Compute volume and tonnage from dimensions and material density.
Wall Square Footage Calculator
Free online Wall Square Footage Calculator. Quickly calculate and get instant results.
Air Changes per Hour Calculator
Calculates ACH from airflow in CFM and room volume in cubic feet.
Air Conditioner Room Size Calculator
Free online Air Conditioner Room Size Calculator. Quickly calculate and get instant results.
Aluminum Weight Calculator
Free online Aluminum Weight Calculator. Quickly calculate and get instant results.
Angle Cut Calculator
Computes miter cut angle as half of the included angle for two symmetrical pieces.
Angle of Depression Calculator
Calculates angle of depression from vertical drop and horizontal distance using arctangent.
Arch Calculator
Compute circular-arc radius, central angle, and arc length from span and rise.
Asphalt Calculator
Calculate asphalt tonnage needed.
Baluster Calculator
Estimate minimum balusters and spacing from rail length, baluster width, and max allowed gap.
Beam Deflection Calculator
Free online Beam Deflection Calculator. Quickly calculate and get instant results.
Beam Load Calculator
Calculate beam moment and shear forces.
Bending Stress Calculator
Free online Bending Stress Calculator. Quickly calculate and get instant results.
Birdsmouth Cut Calculator
Compute birdsmouth plumb cut depth and rafter pitch angle from roof pitch and seat cut run.
Board Foot Calculator
Free online Board Foot Calculator. Quickly calculate and get instant results.