These bulletproof construction calculators feature automatic firing and are free and easy to use.
Use this automatic stair calculator for applications requiring the risers to be 7 3/4″ maximum. Use the landing section to quickly solve for any step.
Use this feet and inch diagonal calculator to easily find the diagonal between two sides of any rectangle. This makes squaring up any layout a snap.
Use this common rafter calculator by entering the span, roof pitch, and ridge thickness. Automatically calculates rafter length, run, rise, and scaffold height.
Calculate beam, girder, or header size needed from No. 2 pine or LVL. Accurate for any span and load.
Calculate layout essentials for an octagonal gazebo.
This roof decking calculator determines slopes for hips and valleys on all pitches.
Calculate how many pieces of siding needed for a wall or gable.
Calculate concrete volume in cubic yards quickly and easily.
Calculates jack rafters for any roof pitch with ease.
Calculate length and pitch of rafters using rise and run.
Unlevel Walls Rafters Calculator
Calculate rafters when one wall is taller than the other.
Calculates common rafter, side rafter, hip length, offset, scaffold height, and more.
Reliable jack rafter calculations every time.
Calculates stud lengths for gable walls at standard roof pitches.
Easily find weight of pine, treated wood, green lumber, and laminated beams.
Calculate concrete needed for any post hole size.
Determine how many tons of gravel you need.
Calculate roof pitch using rise and run.
Calculate number of plywood sheets accurately.
Calculate flooring needed for hardwood, tile, plywood, or carpet.
Ideal for planning wheelchair-accessible ramps meeting IRC codes.
Calculate pole barn costs by size and criteria.
Convert roof pitch to degrees easily.
Multiply feet, inches, and fractions quickly.
Divide feet, inches, and fractions easily.