Here are 4 free online roof truss calculator websites. You can calculate number of trusses needed, rafters, struts, etc., for roof truss calculation.

Here are 4 free online segmented turning calculators. Find out inside and outside segment length, segment thickness, cut angle etc., to create an object.

Here are 3 free online paver calculator websites. You can find out how many pavers are needed for your patio based on paver size and patio dimensions.

Here are 5 free online baluster spacing calculator websites. You can check number of balusters and space between balusters for rail.

Here are 3 free online gable roof framing calculators. You can check materials needed like common rafters, ridge board, etc., for gable roof framing.

Here is a list of 5 free online concrete block calculator websites. You will be able to count the number of concrete blocks for your wall of specific size.

Here is a list of 4 free online concrete rebar calculator websites. These websites help you check number of rebars needed for concrete slab.

Here is a list of 4 free online stair calculators. You can calculate stair angle, stair rise and run, height of first step, stringer length, height, etc.

Here are 3 free online hip roof framing calculator websites. You can calculate roof area, roof rise, hip rafter, ridge board, common rafter length, etc.

Here are 3 free online wall framing calculator websites. Check the material needed (number of studs, plates, area of wall, sheaths, etc.) for wall framing.